Explore every episode of the podcast My Allergist Dad

Drew and his dad, allergist Dr. Z, discuss what really drives fall allergy symptoms and how to prepare. Dr. Z explains that while fall weeds like ragweed, mugwort, and pigweed typically run from mid-August to the first frost, warmer weather can extend symptoms, and many people who think they’re reacting to pollen are actually reacting to outdoor mold spores—especially on dry, windy days after rain, in leaf piles, hayrides, and around pumpkins. 

He also highlights how high humidity increases dust mites and indoor mold, especially when people stop running AC, and notes that mold can feed dust mites. Tips include identifying triggers with testing, pre-treating with non-sedating antihistamines before exposure, wearing a mask for raking/cleaning, reducing indoor humidity below 50% with dehumidifiers, having floors rather than carpet, and considering desensitization drops.

00:00 Leaf Pile Mold Warning

00:27 Fall Allergies Kickoff

01:43 Why Fall Feels Worse

02:33 Ragweed Season Explained

04:11 Outdoor Mold Spores

06:52 Humidity And Dust Mites

08:44 Leaves Pets And Indoors

09:42 Prevention And Treatment Tips

11:36 Home Controls And Cleaning

14:35 Moldy Food Reactions

15:49 Petrichor Vs Mold Smell

18:00 Ticks And Seasonal Wrapup

20:31 Final Takeaways And Signoff

On this episode of My Allergist Dad, Drew and Dr. Z are joined by Drew’s uncle, dentist Dr. Sam Zwetchkenbaum (former chief of the oral health program at the Rhode Island Department of Health), to discuss how oral health connects to allergies, asthma, and whole-body inflammation. 

They explore how the oral and gut microbiomes influence each other, how mouth breathing from untreated allergies can affect palate development and orthodontic needs, and how asthma and allergy medications (including inhaled steroids and drying drugs) can increase cavity risk by reducing saliva. 

Sam explains fluoride’s role in protecting teeth, highlights findings from Medicaid claims showing kids on asthma medications needed more restorative care and extractions, and stresses brushing, flossing, rinsing after inhalers, healthier snacks, and consistent dental checkups—especially for older adults on multiple drying medications.

00:00 Dentistry Meets Allergies

00:40 Meet Dr Sam Z

01:41 The Dr Z Name

03:20 Oral Gut Microbiome

04:08 No Brushing Experiment

06:21 Allergies Change Mouth

07:31 Palate Growth Explained

10:05 Diet And Jaw Evolution

12:29 Meds Dry Mouth Risks

14:59 Fluoride Basics Debate

16:39 How Fluoride Works

17:31 Acid Sugar And Bacteria

18:31 Baking Soda Toothpaste

19:19 Sensodyne Family Stories

20:00 Fluoride Microbiome Debate

20:24 Inflammation And Oral Health

21:39 Flossing Diabetes Connection

22:24 Dog Teeth And Whole Body

24:12 Dry Mouth Med Side Effects

26:30 Dental Chair Allergy Myths

30:55 Metals Crowns Biocompatibility

32:18 Burning Mouth Syndrome

34:54 Asthma Meds Teeth Dominoes

38:28 Snack Swaps For Cavities

40:13 System Gaps And Messaging

43:13 Final Takeaways And Disclaimer

On this episode of My Allergist Dad, Drew and Dr. Z discuss practical ways to prevent and treat symptoms from wildfire smoke inhalation and air pollution, especially for people with asthma and sensitive airways. They explain how fine particulate matter can bypass normal airway defenses, worsen inflammation, and—along with sunlight-driven ground-level ozone—trigger bronchospasm and breathing problems, even in people whose asthma has been “in remission.” Key strategies include reducing exposure by staying indoors, sealing windows and doors, using air conditioning and HEPA purifiers, wearing an N95 or P100 respirator outside, limiting strenuous outdoor activity, and washing off residual particulates. Dr. Z emphasizes taking asthma medications consistently—particularly inhaled steroids (including budesonide/formoterol like Symbicort per GINA guidance)—and notes that recovery depends on limiting ongoing exposure, contrasting it with the cumulative damage from daily smoking.00:00 Wildfire Smoke Episode01:33 Dad’s Smoke Story02:47 Wildfire vs Cigarettes07:25 Pollution Ozone Double Hit10:00 Reduce Exposure Basics11:23 Asthma Meds During Smoke14:47 Asthma Can Return16:08 Why Fires Feel Worse Now24:21 Clean Air Policy Talk28:37 Practical Symptom Relief29:32 Wrap Up and Call In📩 Have a question for the show?Email: myallergistdad@gmail.com

Drew and Dr. Z welcome Dr. Chris Dalldorf, a computational biology and bioinformatics researcher at Brigham and Women’s Hospital, to discuss his machine-learning research on chronic obstructive pulmonary disorder (or COPD) and related lung diseases using large human lung tissue datasets. They clarify how COPD differs from asthma, why smoking is a major risk factor but not the sole cause, and how microRNAs regulate gene expression by silencing messenger RNAs. 

Chris explains that smoking can strongly alter microRNA expression, that certain microRNAs (including microRNA-29) and mutations may be associated with COPD and IPF, and that proving causation in human disease is difficult. They also discuss extracellular matrix genes as potential drivers of fibrosis and how microRNA regulation of these genes could point toward future therapeutic approaches.

00:00 Meet Chris Dalldorf

00:26 Show Intro Theme

00:43 Providence Catch Up

02:41 Why Rhode Island

03:36 MicroRNA Basics

05:47 COPD Versus Asthma

11:40 Why Study COPD

13:24 Smoking And MicroRNA

14:42 Inflammation Parallels

19:37 Causation And Controls

24:09 Animal Models And Data

28:08 Machine Learning Role

32:41 Extracellular Matrix

33:34 Wrap Up And Disclaimer

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Drew and Dr. Z welcome Dr. Stephanie Culler, co-founder and CEO of Persephone Biosciences, to discuss the infant gut microbiome and findings from the MyBabyBiome study, the largest U.S. infant gut microbiome study published. Culler explains that 9 in 10 U.S. babies are missing one or more key Bifidobacterium, and that by age two, babies with low or absent levels were three to four times more at risk for atopic dermatitis, food allergies, and asthma. They discuss how the microbiome develops from birth through early childhood, how factors like C-sections, antibiotics, and diet shape it, and why breast milk HMOs support Bifidobacterium. Culler describes Persephone’s infant/toddler synbiotic combining Bifidobacterium with HMOs, its safety, and parent- and clinician-reported improvements including sleep and mood, plus broader links between microbiome, inflammation, and immune function.00:00 Shocking Baby Biome Data00:39 Welcome And Guest Intro04:49 Microbiome Basics And Timing08:28 Allergy Desensitization Parallels11:39 Beyond Gut Skin And Airways14:32 Immune Programming First 100 Days15:27 Gut Brain And Behavior Links19:21 Diet Fiber And Lifestyle Synergy22:07 Safety And Modern Microbe Loss23:39 Founder Story From Cancer To Babies28:12 New Mom Moment And Missing Bifido29:30 Reflux Colic And EOE Questions35:06 Root Causes And Public Health40:40 Generational Shifts And Food Additives41:49 Product Details Discount And Wrap Up43:44 Final Takeaways And Disclaimer

In this episode of My Allergist Dad, Drew and Dr. Z discuss a phase 3 trial for severe cat allergy targeting the Fel d 1 allergen with a monoclonal antibody injection lasting about three months, improving ocular symptoms and reducing skin test reactivity, with potential seasonal/targeted use and related work in birch pollen.They also talk about a patient who experienced a life-threatening reaction during anesthesia induction for a hernia repair, including severe bronchospasm and hypotension, and how timely tryptase testing helped support that it was true anaphylaxis rather than medication side effects. Dr. Z explains baseline vs reaction tryptase levels, the mast cell activation formula, and why tryptase must be drawn within 2–3 hours, then shares that the patient is being referred to Brigham’s Drug Hypersensitivity and Desensitization Center to test likely triggers such as neuromuscular blocking agents and cefazolin (Ancef). 00:00 Cold Open Breakthrough00:34 Show Intro Theme00:51 Meet Drew and Dr Z01:14 Diet Restrictions Dinner02:34 Anesthesia Anaphylaxis Case06:17 Tryptase Test Explained09:33 Referral and Key Triggers12:35 Haircut Tangent and Shoutout14:40 Cat Allergy Shot Trial20:36 How Blocking Antibodies Work25:46 Timing Shots and Future Uses27:05 Wrap Up and Disclaimer📩 Have a question for the show?Email: myallergistdad@gmail.com

Drew and Dr. Z welcome Drew’s fiancée, Sydney, to discuss her experience living with two autoimmune diseases—Type 1 diabetes since age five and Hashimoto’s since adolescence—and how autoimmune conditions overlap with allergies through inflammation and the immune system. They explore genetic predisposition plus triggers, the importance of taking control of chronic illness through education and daily habits, and how technology like CGMs and insulin pumps has transformed diabetes management. The conversation covers nutrition, walking after meals, preparedness, and the mixed value of non-diabetics using CGMs. Dr. Z shares a case linking Hashimoto’s, celiac disease, and hives, and they discuss reducing inflammation, gluten-free eating, gut health, probiotics, and how medical advances have dramatically improved outcomes across many conditions.00:00 Welcome and Teaser00:36 Meet Sydney02:23 Sydney Autoimmune Story02:59 Autoimmune Continuum Explained06:16 Taking Back Control09:25 Diabetes Tech and CGMs12:06 Should Non Diabetics Track Glucose16:55 Hashimotos Celiac and Inflammation23:47 Medical Progress Then and Now30:06 Diabetes Camp and Daily Habits34:36 Gut Health Food Sensitivities38:32 Fasting Probiotics and Dog Talk43:09 Wrap Up and Final Thoughts📩 Have a question for the show?Email: myallergistdad@gmail.com

Drew and Dr. Z discuss the 2026 cyclospora outbreak and practical steps to reduce exposure, including washing hands, thoroughly scrubbing produce, cutting away bruised areas, and cooking produce to at least 158°F/70°C since washing alone can’t guarantee removal. They note CDC reports of at least 10,000 laboratory-confirmed domestic cases since May 1, 2026, and talk about how food-system factors limit individual control, while lifestyle and microbiome health may influence how severely someone is affected. Dr. Z shares an “aha” about chronic hives potentially worsening after unhealthy meals and alcohol due to liver strain, estrogen and histamine backup, and effects on mast cells, especially in menopausal women with fatty liver. They also cover rebuilding the microbiome after GI illness with improved diet and possible probiotics.00:00 Cyclospora Outbreak Intro00:35 Show Theme Song01:01 Fatty Liver And Hives06:29 Agency And Food Safety09:25 Cooking Produce Tips10:25 Where Cyclospora Comes From11:22 Taco Bell Talk14:12 Rebuilding The Microbiome16:00 Gut Parasites Q And A18:26 Wrap Up And Disclaimers📩 Have a question for the show?Email: myallergistdad@gmail.com

This week on My Allergist Dad, Drew and Dr. Z sit down with fine art photographer and longtime family friend Lucas Foglia to talk about health, happiness, and how lifestyle and mindset can shape stress, immunity, and overall well-being. Lucas shares the inspiration behind his book and exhibition Constant Bloom, which follows the painted lady butterfly migration from Kenya to Norway as a symbol of connection across borders, and describes turning photography into a purpose-driven way of living. They discuss balance and stress as both fuel and risk, the “dirt” and allergy conversation, why some people are more allergy-prone, and how food culture and dietary restrictions show up differently in the Bay Area versus Paris. He also recounts a powerful encounter in Tunisia that led him to volunteer with refugee resettlement groups and reflects on art, family connection, and living with meaning.00:00 Butterflies And Allergies Cold Open01:02 Show Intro And Guest Welcome02:36 San Francisco Check In03:09 From Photos To Film04:59 Purpose Fuels Health07:19 Doughnut Economics And Welfare11:17 Constant Bloom Migration Story13:37 Dirt Exposure And Allergy Debate16:35 Food Restrictions And Dinner Parties22:40 Stress Balance And Immunity26:57 Vaccines And Modern Anxiety28:29 Borders Migration And Meaning30:00 Closing Thoughts And Art Connection34:27 Outro And Medical Disclaimer

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Drew and Dr. Z welcome Dr. Elizabeth O’Day, CEO, CSO, and founder of Olaris, to discuss how her company combines biology, metabolomics, and machine learning to create diagnostics that support real clinical decision-making. Liz shares how her brother’s childhood cancer experience motivated her to pursue tools that reduce today’s trial-and-error medicine and better match therapies to individuals. She explains biomarkers (genomic, transcriptomic, proteomic, and metabolomic), describing metabolites as small molecules that reflect real-time body function and are often the “fingerprint of phenotype.” The conversation focuses on Olaris’ urine-based test for kidney transplant recipients, which uses metabolite patterns to distinguish stable grafts from rejection, borderline rejection, or infection—conditions with opposite treatments—along with new work on a pediatric transplant assay to reduce reliance on biopsies.00:00 Meet Dr. Liz O'Day01:57 Olaris Mission Overview04:16 Why She Founded Olaris08:05 Precision Medicine In Practice11:05 Biomarkers And Phenotypes13:27 Metabolites 101 Explained14:30 Lifestyle, Diet, And The Metabolome19:12 Genes Versus Metabolites22:35 Urine Tests And Ancient Clues23:42 Metabolites Guide Immunity25:27 Transplant Test Explained27:32 Rejection Versus Infection29:37 Precision Medicine Landscape33:39 Pediatric Transplant Breakthrough36:12 Digestive Rest And Fruit Talk38:18 Coconut Stories And Metabolites40:11 Wrap Up And Future Promise41:43 Show Outro And Thanks📩 Have a question for the show?Email: myallergistdad@gmail.com

FARE criticized the show Not Suitable for Work for portraying a character repeatedly eating shellfish despite an allergy and self-injecting epinephrine, then going to the ER for “adrenaline poisoning,” prompting Drew and Dr. Z to discuss how allergies are depicted in film and TV and what’s medically accurate. Dr. Z emphasizes epinephrine as the first-line treatment for anaphylaxis and explains why Benadryl is not adequate for life-threatening reactions, the need for emergency evaluation due to risks like biphasic reactions, and the real side effects and dosing concerns of epinephrine. They also address correct EpiPen technique, risks of incorrect injection (including to the neck), newer options like Auvi-Q and nasal epinephrine, and review portrayals from Hitch, Horrible Bosses, Malcolm in the Middle (poison oak timing and rash type), Royal Pains, Jury Duty Presents: Company Retreat, and Pulp Fiction, noting some accuracy but frequent exaggeration.00:00 FARE Calls Out TV Scene00:50 Show Setup And Alpha Gal01:28 Not Suitable For Work Breakdown02:52 Epinephrine Versus Benadryl06:41 Risks And Repeat Dosing10:26 Proper EpiPen Use11:40 Accidental Injection Effects15:46 Jury Duty And Chronic Hives20:16 Triggers And Enabling Factors21:38 Hitch Reaction Accuracy24:55 Poison Oak Mythbusting26:46 Royal Pains And Pulp Fiction29:12 Poison Ivy Timing Explained31:22 Wrap Up And Final Thoughts34:16 Medical Disclaimer

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Drew and Dr. Z discuss Alpha-gal syndrome, a tick-bite–associated allergy to non-primate mammal products that can cause delayed reactions, including hives, throat tightness, GI symptoms like diarrhea, and even anaphylaxis hours after eating. They explain that Alpha-gal was once tied mainly to the lone star tick in the South but is now being seen more widely, including Rhode Island, with other ticks like the blacklegged and western blacklegged ticks. Dr. Z shares real patient cases—from cookout-triggered reactions to chronic GI and skin symptoms resolving after eliminating mammal-derived foods—and emphasizes that testing (alpha-gal IgE) must be interpreted with symptoms in mind, since positive tests without symptoms may not require avoidance. They also note growing concerns about links to medications, medical devices, and possible cardiac implications, and stress balancing awareness with avoiding unnecessary anxiety.Here's a recent article about the rise of Alpha-gal syndrome:https://www.wsj.com/health/the-ticks-that-cause-red-meat-allergies-are-on-the-move-this-summer-b53d01eb?st=JWadDx&reflink=article_imessage_share00:00 Alpha-gal Overview01:03 Show Intro Theme01:20 Zoo Penguins Detour03:01 What Is Alpha-gal?03:44 Ticks And Spread05:23 Real Anaphylaxis Cases07:05 Testing And Diagnosis08:32 GI And Skin Symptoms10:17 Avoidance And Hidden Sources11:50 When To Stop Meat12:33 Why Testing Can Backfire13:58 Lyme Trial Screening16:27 How Clinicians Decide18:47 Elimination Diet Approach21:46 Lyme And Tick Prevention23:29 Treatment And Delayed Reactions27:33 Balancing Risk And Anxiety28:48 Wrap Up And Disclaimer📩 Have a question for the show?Email: myallergistdad@gmail.com

In this follow-up episode of My Allergist Dad, Drew and Dr. Z welcome back Abby to share updates on her infant son Joey’s progress with eczema and multiple allergies. Abby describes Joey’s early severe atopic dermatitis, egg-triggered hives, positive tests to dog, pistachio, and cashew, and how a daily routine improved his skin: nightly baths, ceramide baby moisturizer, heavy Crisco layering, and prescription topical treatment when needed. They discuss giving baked egg mini muffins weekly, maintaining peanut exposure with Bamba, and offering other common allergens weekly, plus a daily probiotic. Dr. Z explains why improving the skin barrier matters, and why sublingual immunotherapy drops (currently dog only) have a strong safety profile and may help build tolerance; Abby reports Joey now has minimal reactions around dogs.00:00 Crisco Eczema Breakthrough00:46 Show Intro and Guests04:33 Joey Allergy Backstory06:57 Daily Barrier Routine08:24 Baked Egg and Drops09:37 Dog Allergy Mythbusting10:52 Early Desensitization Science12:59 Diet Variety and Microbiome16:15 Taking Control Long Term18:57 When to Start Food Drops19:27 Drops Versus Shots20:21 Why Sublingual Is Safer21:36 Sticking With The Routine22:00 Allergy Season And Dog Prep23:26 Dolly And Joey Updates24:52 Progress And Real Life Exposure26:49 Baked Egg To Pancakes29:19 Sourdough And Baking Talk31:08 Rocky Ring Bearer Jokes32:12 Wrap Up And Disclaimer

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Drew and Dr. Z are joined by Dr. Elnaz Firoz, Medical Director of Dermatology at The Miriam Hospital and founder of the Skin of Color Clinic, to discuss the major overlap between dermatology and allergy and why fragmented, multi-specialist care can delay diagnosis. They cover the importance of thorough skin exams, challenges recognizing inflammation and eczema on darker skin, and common issues in skin of color such as pigment changes, hidradenitis suppurativa, and keloids. The conversation explores how “allergy” can include drug hypersensitivity and immune reactions like leukocytoclastic vasculitis, plus rising urticaria and contact dermatitis (including from wipes). They discuss insurance barriers, the impact of stress and lifestyle on inflammation, concerns about widespread Botox use and developing resistance, and practical sun protection guidance emphasizing mineral sunscreens and protective clothing.00:00 Allergies and Skin Intro00:43 Meet Dr. Firoz01:58 Specialists and Care Coordination04:30 Why Full Skin Exams Matter07:11 Skin of Color Clinic Focus08:18 Keloids Explained12:01 Acne and Cosmetic Bias14:41 Drug Pricing and Access18:49 Allergy Driven Skin Reactions20:32 Vasculitis and Urticaria Basics26:21 Biologics and Diagnostic Pitfalls28:31 Medical Progress and Inflammation32:42 Root Cause Allergies32:53 Hormones Lifestyle Asthma34:43 Stress Triggered Hives36:57 Lifestyle Inequality Health39:51 Botox Immune Risks45:43 Food Additives Mast Cells48:02 Mineral Sunscreen Basics50:34 Wrap Up And Credits📩 Have a question for the show?Email: myallergistdad@gmail.com

In this episode of My Allergist Dad, Drew and Dr. Z welcome gastroenterologist Dr. Alan Epstein to discuss gut health and its relationship to overall health, focusing on eosinophilic esophagitis (EoE) and why it has become more common since the 2000s. Dr. Epstein explains how EoE is diagnosed by endoscopy and biopsy (over 15 eosinophils per high-power field), how it can cause food impactions, and why triggers can be unclear, sometimes involving foods and possibly environmental factors. They review treatments including proton pump inhibitors, swallowed/topical steroids like budesonide, and dupilumab as a later option, plus the challenges of elimination diets. The conversation expands to celiac testing, microbiome diversity and antibiotics, vagus nerve signaling, and using vibration controlled transient elastography (VCTE) to detect fatty liver early to prevent fibrosis and cirrhosis.00:00 Liver Scan Wakeup Call00:52 Episode Preview and Intro01:45 Meet Dr Alan Epstein03:09 Medicine Beyond Silos06:11 What Is EoE15:46 Treating EoE Options17:08 Root Causes and Diet Triggers20:34 Celiac vs Gluten Sensitivity23:00 Wheat Around the World25:16 Old School Swallow Tests25:50 Why EoE Is Rising26:56 Obesity Toxins and Fatty Liver28:30 FibroScan Explained30:14 EoE Food Impaction Basics32:17 Endoscopic Removal Stories36:13 Ancient Microbiome Findings40:12 Fermented Foods vs Probiotics41:55 GLP-1s and Root Causes45:48 Healthcare System Squeeze48:50 Wrap Up and Disclaimers

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This episode of My Allergist Dad explores how mental stress can affect the body, immune system, and allergies. Drew and Dr. Z are joined by Santa Monica psychiatrist Dr. Bryson Lochte, who discusses treating root causes rather than only symptoms, including psychotherapy, ketamine-assisted psychotherapy, and tools like meditation and breathwork. Dr. Z describes patients with persistent hives, itching, and breathing complaints that don’t respond well to escalating medications, often alongside major life stressors, and explains stress-related sympathetic and cortisol effects, anxiety–allergy connections, and downstream impacts like microbiome changes and mast-cell activation. The conversation covers how stress can worsen existing allergies, how anxiety can mimic asthma or contribute to vocal cord dysfunction, and why a more interconnected, holistic approach is needed alongside standard medical treatment.00:00 What Stress Really Means00:57 Meet Dr. Bryson Lochte01:27 Show Intro Theme03:09 Stress And Allergy Flare Ups08:05 Treating Roots Not Symptoms10:36 Three Ways We Handle Distress12:26 Breathwork And Hidden Emotions14:35 Breathing Problems Or Anxiety16:26 Kids Animals And Culture19:30 Anxiety Allergies Chicken Egg22:04 Immune Domino Effects26:26 Holotropic Breathwork Explained29:48 Wrap Up Final Thoughts32:25 Medical Disclaimer📩 Have a question for the show?Email: myallergistdad@gmail.com

On this episode of My Allergist Dad, Drew and Dr. Z talk with Dr. Jonathan Friedlander, Chief Business Officer at Atanis Biotech about FAST-PASE®, a diagnostic test that uses a stable, functional engineered mast cell line to measure whether a patient’s serum actually triggers mast cell activation when exposed to specific allergens. Unlike basophil activation testing that requires fresh whole blood, FAST-PASE® removes cells, uses serum to sensitize lab mast cells with the patient’s IgE, IgG, and other factors, then adds allergens at multiple concentrations and measures activation, aiming to reduce false positives from IgE-only tests and better predict clinical reactivity and thresholds for oral food challenges. They discuss applications to food allergy, immunotherapy monitoring (OIT/SLIT), alpha-gal syndrome and widespread sensitization vs true allergy, and broader future uses for environmental allergens and drug allergy, plus Jonathan’s recent Capitol Hill visit and plans to start testing at Dr. Z’s clinic.00:00 Basophil Test Limits00:59 Why This Test Matters01:56 Show Intro and Guest04:18 Origins of Atanis Biotech06:16 Immortal Mast Cells08:08 How FAST-PASE® Works10:08 Compared to IgE Tests13:32 IgG Protection Nuance16:02 Desensitization and Challenges17:55 Alpha Gal Confusion19:25 Alpha Gal Biology21:04 Need Functional Testing22:37 Tick Season Anxiety23:12 Alpha Gal Case Story23:52 Hidden Alpha Gal Exposures24:31 Gene Edited Pig Organs24:46 Sausage Trial And Food Questions26:26 Therapies And Monitoring Progress28:30 Beyond Food Allergens29:35 Drug Allergy And Testing Limits30:54 Advocacy On Capitol Hill32:56 Access And Allergist Shortage34:07 Mast Cell Confusion And Root Causes36:55 Launching In Europe Too39:15 Wrap Up And Next Steps40:24 Clinic Testing And Farewell📩 Have a question for the show?Email: myallergistdad@gmail.com

Drew and Dr. Z answer a listener question about a nine-year-old with severe seasonal oral allergy syndrome, explaining cross-reactivity between pollens (often birch) and raw fruits, vegetables, and nuts, how cooking can denature allergens, and how immunotherapy (shots or sublingual drops, sometimes seasonal or year-round) and microbiome-focused habits like reducing processed foods and sugar, managing stress, and considering probiotics may improve tolerance. They then discuss hives (urticaria). Dr. Z covers common non-allergic causes of prolonged hives (viral illness, stress, infections like Lyme, alpha-gal), appropriate evaluation, and stepwise treatment with daily second-generation antihistamines, higher dosing when needed, and biologics such as omalizumab and dupilumab for chronic spontaneous urticaria.00:00 Listener Question: Oral Allergy Syndrome!00:33 What Are Hives?01:02 Show Intro Theme01:33 Listener Question: Oral Allergy Syndrome02:47 Why Symptoms Are Seasonal04:26 Food Prep And Allergy Shots05:47 Microbiome Diet And Stress08:10 Immunotherapy Options11:35 Pivot To Hives Topic12:07 How To Recognize Hives14:06 ER Fear And Stress Cycle17:15 Prague Story & Calming Hives21:04 Is It Really Hives?23:00 Triggers, Tests, And Causes26:20 Chronic Hives Treatment Plan27:46 Biologics: Explained!31:59 Wrap Up And Final Thoughts33:37 Disclaimer And Outro

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On this episode of My Allergist Dad, Drew and Dr. Z talk with James White, the CEO of KBMO Diagnostics, about where food sensitivity testing fits in for patients with chronic symptoms that don’t show up on standard IgE allergy tests. James explains KBMO’s patented approach that combines IgG exposure markers with innate immune inflammation markers to reduce false positives and narrow results from dozens of foods to a more practical list, contrasting it with hair-based tests that he says are not reproducible. Dr. Z clarifies IgE versus IgG and why food sensitivities can be delayed up to 72 hours, discusses how testing can guide elimination diets for GI symptoms like IBS and sometimes conditions like eosinophilic esophagitis, and shares patient stories of symptom improvement after removing trigger foods. They also cover KBMO’s added gut barrier (“leaky gut”) panel, retesting strategies, and how gluten sensitivity differs from celiac disease.00:00 Inflammation And Food Inputs00:36 Show Intro Theme00:50 Meet James White, CEO of KBMO01:51 Patriots Shirt Story03:24 Where Testing Fits In04:27 How KBMO Tests Work07:50 IgG Vs IgE Explained11:23 Hair Tests And Reproducibility13:52 Gut Barrier Panel Added15:34 Real Patient Success Stories19:28 Who Benefits The Most24:15 FODMAP Vs Inflammation27:15 Hosts' Personal Results29:44 Pets And Food Inflammation32:27 Leaky Gut And Retesting36:49 Celiac Versus Sensitivity40:01 Wrap Up And Takeaways42:13 Outro And Disclaimer📩 Have a question for the show?Email: myallergistdad@gmail.com

On this episode of My Allergist Dad, Drew and Dr. Z are joined by Dr. Tapp, Rhode Island’s only board-certified veterinary dermatologist, to explain allergies in pets—focusing on what pets are allergic to and how it differs from humans. Dr. Tapp describes canine atopic dermatitis as a genetic, skin-barrier–driven condition that commonly shows up as paw licking, face rubbing, ear infections, and itching, with increasing rates linked to indoor living and exposures like dust mites and mold. They discuss typical allergens (pollens, mites, molds), the rare role of contact dermatitis, and that pets can even test positive to human dander. The conversation covers food reactions (often not IgE), the need for an 8-week elimination diet and challenges, occasional anaphylaxis (including storage mites), and treatments such as barrier repair, medicated shampoos, immunotherapy, Cytopoint, and Apoquel.00:00 Dog Allergies Rising00:47 Show Intro Theme01:35 Meet Dr Tapp02:20 Dogs Vs Humans Symptoms03:20 Skin Barrier Breakdown05:46 IgE And Cytokines06:24 Western Lifestyle Effects07:50 Common Dog Allergens09:02 Can Dogs Allergic To Humans10:37 Hypoallergenic Dog Myth13:36 Contact Dermatitis Rare16:50 Diet And Food Allergy19:26 Cats Atopic Syndrome20:47 Barrier Focus Treatments21:37 Ceramides and Staph22:41 Three Drivers of Atopy23:56 Biologics and JAK Inhibitors25:23 Food Allergy Testing Limits28:17 Diet Trials and Avoidance30:10 Toxins vs Food Allergy32:21 Genetics and Breeding Risks34:58 Pet Dander and Cat Allergy37:21 Other Species Allergies40:06 Antihistamines Dont Work41:52 Zoo Dermatology Stories43:49 Wrap Up and Disclaimer📩 Have a question for the show?Email: myallergistdad@gmail.com

Drew and his dad, Dr. Z, review the American Academy of Allergy, Asthma & Immunology’s tips for reducing seasonal pollen exposure, agreeing they can help but challenging the “avoidance” philosophy that keeps people inside. Dr. Z argues for “treat the cause, defeat the symptom” by improving tolerance through immunotherapy and proactive anti-inflammatory treatment so patients can enjoy spring. He explains the priming effect and early vs late-phase allergic responses, why antihistamines often lead to breakthrough congestion as the season progresses, and why starting nasal steroids (e.g., Flonase, Nasacort, Nasonex, Rhinocort) at least two weeks before a predictable season can blunt worsening symptoms. They discuss timing for preseasonal sublingual immunotherapy (preferably about two months before symptoms) and note medications don’t interfere with desensitization.00:00 Pollen Avoidance Tips00:48 Meet the Allergy Doc02:21 Avoidance vs Tolerance02:57 Treat Cause Not Symptoms05:07 Start Nasal Steroids Early06:43 Priming Effect Explained09:18 Early vs Late Response10:48 Decongestants and the D12:16 Timing Your Allergy Plan13:28 Cat Party Asthma Story17:17 Late Phase Asthma Hit18:06 Preseason Meds Strategy19:09 Sublingual Timing Guide20:35 Allergy Shot Love Story22:48 Pollen vs Dust Mite25:49 Control Not Avoidance28:44 Year Round Allergy Plan30:35 Meds vs Immunotherapy32:24 Wrap Up And Disclaimer📩 Have a question for the show?Email: myallergistdad@gmail.com

Drew and his dad, Dr. Z, discuss why some people get severe-looking mosquito bite reactions while others don’t, explaining that mosquitoes don’t have venom and big welts are often due to a heightened histamine response rather than a true allergy. They compare this to stinging insect venom allergies, emphasizing that bee/wasp anaphylaxis can be life-threatening but is highly treatable with venom immunotherapy (allergy shots), which is about 85–90% effective and can prevent reactions even after future stings; Dr. Z notes patients should still carry epinephrine. They cover common stinging insects treated (honeybee, wasp, yellow jacket, and hornets), clarify that snake venom toxicity differs from allergy, and note rare snake-bite anaphylaxis and possible allergic reactions to antivenom, including considerations with alpha-gal. They also mention mosquito attraction factors like blood type, CO2, sweat, and heat.00:00 Creepy Crawlies Intro00:41 Rhode Island Snake Talk02:14 Mosquito Bite Reactions04:14 Bee Allergy Treatment06:37 How Venom Shots Work08:50 Snake Venom vs Antivenom15:15 Fire Ants and Bee Reactions23:05 Why Mosquitoes Pick You25:05 Wrap Up and PSA

📩 Have a question for the show?Email: myallergistdad@gmail.com

Drew and Dr. Z discuss the nine major foods responsible for most allergic reactions in the U.S.—milk, eggs, fish, shellfish, tree nuts, peanuts, wheat, soybeans, and sesame—and use them to explain how food allergy (IgE-mediated) differs from food sensitivity and broader inflammation tied to gut and skin microbiomes. Dr. Z describes eosinophilic esophagitis as a likely food-sensitivity condition that can present with choking, reflux, and fibrosis, often linked to common trigger foods, and notes possible connections to IgG4 and desensitization therapies. They explore dysbiosis, how antibiotics, processed foods, sugar, emulsifiers, and pesticides like glyphosate may disrupt microbiome balance, and why lifestyle factors such as stress, sleep, exercise, and diet can influence allergy symptoms and reactivity thresholds. They emphasize bioindividuality, the limits of current microbiome testing, and the need to address root causes rather than only treating symptoms.00:00 Big 9 Food Allergens01:05 Meet My Allergist Dad02:41 Food Sensitivity vs Allergy03:13 Eosinophilic Esophagitis Basics06:45 Microbiome Balance and Eczema09:56 Testing and Dysbiosis Limits11:52 Lifestyle Stress and Gut Brain13:06 Pesticides, Processed Foods, and Inflammation16:03 Integrative Nutrition Goals19:26 Root Causes of Rising Allergies22:38 Birth Genetics and Exposure25:18 Healing Thresholds and Gluten Free Trap31:28 Wrap Up and Disclaimer📩 Have a question for the show?Email: myallergistdad@gmail.com

Drew and Dr. Z welcome Dr. Mark Charbonneau, a microbiologist and biotech leader at Solaria Bio, to discuss why it’s challenging to beneficially modify the gut microbiome despite major advances in understanding its role in health, immunity, and disease. They explain the microbiome as an ecosystem that influences immune balance between inflammation and tolerance, including regulatory T cells, and how disruptions like antibiotics can contribute to dysbiosis and conditions such as atopic dermatitis. Mark describes Solaria Bio's medical food symbiotic product, Bondia, designed from four fruit-and-vegetable–derived probiotics to reduce gut-driven inflammation, improve gut barrier function, slow aging and menopause-associated bone loss, while also improving GI symptoms in clinical studies. They emphasize proactive, root-cause approaches alongside lifestyle measures like resistance training, calcium, and vitamin D.Solaria website: www.solaria.bioBondia product page: https://solaria.bio/products/bondiaMark's professional socials:YouTube: https://www.youtube.com/@drmarkcharbonneauInstagram: https://www.instagram.com/drmarkcharbonneau/📩 Have a question for the show?Email: myallergistdad@gmail.com

Drew and his dad, allergist Dr. Z, explain angioedema as deep tissue swelling that can occur with hives or as part of anaphylaxis, sometimes affecting lips, eyes, tongue, or the airway. They distinguish common, usually non–life-threatening angioedema from the rare but dangerous hereditary/acquired form involving the complement pathway and C1 esterase inhibitor deficiency, which can be triggered by trauma or surgery and screened with a C4 blood test. Dr. Z also discusses non-IgE mechanisms such as bradykinin/kinin pathways, as well as medication contributors that can worsen swelling.📩 Have a question for the show?Email: myallergistdad@gmail.com

In this episode, we go beyond the medical advice and get real about the day-to-day reality—from scary first reactions and EpiPen moments to the constant planning around food, school, and social life.

Dr. Z is joined by his wife (who’s been through it all) and their daughter, a new mom navigating allergies for the first time. Together, they share honest stories, practical tips, and the emotional side of being the one responsible for keeping your child safe.

We get into:

• The fear every parent feels after a first allergic reaction

• How to prepare without putting your kid “in a bubble”

• Why anxiety can sometimes be worse than the allergy itself

• Real-life strategies for managing food allergies, eczema, and asthma

• What’s changed for parents today (and what hasn’t)

Plus—some surprisingly funny moments about airport food mishaps, allergy “perks,” and why preparation is everything.

If you’re a parent, thinking about becoming one, or just trying to better understand allergies—this episode is for you.

 Like, subscribe, and share with someone who double-checks every ingredient label.

Have you heard that your body completely resets every 7 years? Does that mean your allergies can change too?

This week on My Allergist Dad, Drew and Dr. Z break down one of the most common allergy myths and explain what actually happens inside your immune system as you age.

They dive into:

• Whether allergies really change every 7 years
• If it's possible to naturally outgrow allergies
• Why some people suddenly develop allergies later in life
• How genetics and environment influence allergies
• Why allergies often run in families
• What epigenetics means for your immune system

Plus, Dr. Z shares real examples from decades of allergy practice—including why siblings can have completely different allergies and how lifestyle and environment can trigger them.

If you've ever wondered why your allergies changed—or why your kids might have them—this episode explains it all.

 Have a question for the show?
Email: myallergistdad@gmail.com

In this episode of My Allergist Dad, Dr. Z and Drew break down the real connection between stress, the immune system, and allergic reactions. From cortisol and immune tolerance to insulin spikes, mast cells, and metabolic syndrome, we explore why stressful seasons of life often lead to more sneezing, hives, asthma, and inflammation. 

You’ll learn:

• How stress lowers your immune “tolerance” threshold

• Why chronic stress can increase allergic reactivity

• The link between insulin resistance, overeating, and mast cell activation

• How metabolic health affects asthma and allergies

• Why modern life may be making allergies worse

• Practical lifestyle shifts that can calm inflammation naturally

We also talk about shingles, immune weakness, preventive care, and why treating symptoms alone isn’t always enough.

If your allergies seem worse during intense work weeks, emotional stress, poor sleep, or unhealthy eating patterns — this episode connects the dots.

Send us your allergy and immunology questions — we’d love to answer them on a future episode. Myallergistdad@gmail.com

This week on My Allergist Dad, we’re joined by entrepreneur and banana bread founder Allie Chernick, a former patient of Dr. Z who’s lived the confusing reality of food allergies firsthand. From positive allergy tests that don’t always match real allergic reactions to oral allergy syndrome, nut allergies, cross-reactivity, and food sensitivities, this episode breaks down why diagnosing and managing food allergies is rarely simple.

We explore:

·      The difference between true IgE-mediated food allergies and food sensitivities

·      Why allergy testing can show a positive result without real-world symptoms

·      How oral allergy syndrome causes reactions to raw fruits, vegetables, and nuts

·      Why someone might tolerate Nutella but react to hazelnuts

·      How puberty, hormones, and environmental exposure can change allergy risk over time

·      The everyday impact of living with food allergies, including restaurant anxiety and label reading

·      What it’s like running a food business while managing common allergens

Dr. Z also shares insight into modern food allergy testing, the difference between sensitization and true allergy, and the latest advances in oral immunotherapy, desensitization treatment, and evidence-based allergy care that are helping patients manage peanut allergies, tree nut allergies, and other common food triggers more confidently.

If you’ve ever wondered whether you’re truly allergic to a food, outgrew a childhood allergy, tested positive without symptoms, or react inconsistently to certain foods, this episode offers clarity from both a medical and real-world perspective.

All that and more on this week’s episode of My Allergist Dad.

Check out Allie's Banana Bread -https://alliesbananabread.com/

If you have an allergy related question, please email us at myallergistdad@gmail.com

What if everyday exposures—from food to skincare to environmental chemicals—are quietly fueling allergies and inflammation through “environmental estrogen”?

In this episode of My Allergist Dad, Dr. Z and Drew talk with integrative immunology expert Dr. Benoit Tano about the estrogen-free lifestyle and how reducing estrogen-like exposures may help calm allergic and inflammatory symptoms.

They discuss how environmental chemicals, pesticides, plastics, and even personal care products can mimic estrogen in the body, potentially overstimulating immune cells and contributing to hives, mast cell activation, fatigue, and chronic inflammation. Dr. Tano explains why women may be especially affected, how hormone imbalance intersects with allergy pathways, and what practical changes he recommends to lower exposure.

If you’re dealing with unexplained allergies, chronic hives, or inflammation—and wondering whether hormones or the environment could be part of the picture—this conversation explores the estrogen-free approach and its potential role in immune health."

Guest: Dr. Ben Tano
 The Estrogen-Free Lifestyle
 tayapromediverse.com

Listen now to learn how reducing everyday estrogen-like exposures may support allergy and immune balance.

If you have an allergy-related question, we'd love to hear it. Please send them to myallergistdad@gmail.com

If running makes you wheeze, should you stop exercising… or do you actually need it more?

In this episode of My Allergist Dad, Drew and Dr. Z break down the real relationship between exercise and asthma — including why exercise doesn’t cause asthma, how it can act as a trigger, and what’s really going on inside your airways when you start wheezing. They talk through exercise-induced asthma, allergic inflammation, cold and dry air, pollution, and why swimming often feels easier than running.

You’ll also learn why treating your allergic triggers can raise your exercise tolerance, how pre-treating with inhalers actually works, and why frequent workouts can mean fewer asthma symptoms over time — not more.. Plus: breathing techniques, humid air hacks, and why the answer is almost always don’t skip the gym.

Got allergy questions? Email us myallergistdad@gmail.com

Can you be allergic to your own hormones?

In this episode of My Allergist Dad, Drew and Dr. Z dig into why so many people—especially women—start developing hives, food sensitivities, and new immune reactions in their 30s and 40s. 

They break down how hormone shifts, estrogen dominance, autoimmune conditions like Hashimoto’s, and even “clean” products can push the immune system into overdrive. Dr. Z explains why many food reactions don’t show up on standard allergy tests, how mast cells respond to hormonal changes, and why inflammation—not the food itself—is often the real trigger.

You’ll also hear real patient stories, including how someone became reactive to their dish soap after avoiding previous allergens—and why adult-onset allergies are rarely random.

If you’ve ever asked:

• “Why am I suddenly reacting to foods I used to tolerate?”

• “Is this autoimmune, hormonal, or actually an allergy?”

• “Can hormone balance change how sensitive I am?”

This episode connects the dots—and helps you stop blaming yourself (or your dinner).

Got allergy questions? Email us at myallergistdad@gmail.com 

Seasonal allergies don’t have to feel like a surprise attack every year. In this episode of My Allergist Dad, Drew and Dr. Z break down how allergies actually work — and more importantly, how to get ahead of them before pollen, dust mites, and mold take over your life.

They cover why dust mites are a year-round problem with a seasonal growth phase, how indoor humidity quietly makes symptoms worse, and the biggest mistakes people make when “cleaning for allergies.” Dr. Z also explains why timing matters — from when to start nasal sprays and antihistamines to how preseason allergy drops and shots can reduce symptoms before your season even starts.

Plus, they dig into some wild real-world cases involving exercise, mold exposure, and allergic reactions that weren’t caused by food at all — and how lifestyle factors like sleep, stress, and diet can affect how intense your allergies feel.

If you’ve ever wondered:

• Why your allergies feel worse some years than others

• Whether air purifiers actually help with dust mites

• How to prevent seasonal allergies instead of just reacting to them

This is the episode for you! 

Got allergy questions? Email us at myallergistdad@gmail.com

Do natural and herbal remedies actually work for allergies, or is it mostly hype? In this episode of My Allergist Dad, Drew poses that question to his dad, Dr. Z, a top allergist and immunologist, and the answers go way beyond “drink this tea.”

They break down real, evidence-backed options like quercetin with bromelain, nettle tea, probiotics, and vitamin C, and explain how food itself can act like medicine. You’ll learn why a diet full of fruits and vegetables can reduce inflammation, how your gut microbiome connects to allergies, and why lifestyle changes matter just as much as supplements.

Along the way, they talk dust mites, air-drying clothes, freezing stuffed animals, and whether honey makes a difference or is benefitting from the placebo effect. Then the episode turns personal as Dr. Z shares his own childhood battle with asthma and the moment that set him on the path to becoming an allergist.

It’s a mix of practical allergy advice, myth-busting, and a father-son story about learning how to breathe better—literally and figuratively. 

Have a question? email myallergiestdad@gmail.com

You grew up with pets. They slept on your bed. You were fine. Then you leave for college, come home for the holidays… and suddenly your own dog makes you break out in hives. What happened?

In this episode, Drew and his allergist dad, Dr. Z, unpack a listener’s question about “losing immunity” to pets—and whether that tolerance can come back. They explain how living with an animal can act like “natural allergy drops,” why time away can make symptoms feel way worse, and how stress, sleep, and college life can throw your immune system out of alignment.

You’ll learn the difference between true “immunity” and changing reactivity, why your body has an allergy threshold, and what to do if going home now feels like walking into a sneeze factory. From pre-gaming visits with meds to long-term sublingual immunotherapy, this episode offers practical ways to stay connected to your family and their pets—without suffering.

If you’ve ever wondered why your childhood dog suddenly feels like a biological weapon, this one’s for you.

Do you have questions? Email us at myallergistdad@gmail.com

Itchy, blistering skin that won’t go away? Before you blame food, pets, or seasonal allergies, it might be allergic contact dermatitis, a delayed skin reaction caused by everyday products you don’t even realize are touching you.

In this episode of My Allergist Dad, Drew sits down with his dad, Dr. Z, to break down what allergic contact dermatitis actually is, how it’s different from hives or classic allergies, and why antihistamines often don’t help. They share real patient stories involving shampoo, soap, shaving cream, lip balm, jeans buttons, hairdressers, hand sanitizer, and even “all-natural” products that turned out to be the real culprits.

You’ll learn:

• The difference between allergic reactions, irritant reactions, and contact dermatitis

• Why rashes can show up days after exposure

• What patch testing is and how it works

• Common ingredients in products like fragrancesfragrances, preservatives, metals, and dyes that cause reactions

• Why “natural” doesn’t always mean safe for your skin

If you’ve been itchy, miserable, or bouncing between doctors without answers, this episode might finally explain what your skin has been trying to tell you.

Have an allergy related question? Ask Dr. Z at myallergistdad@gmail.com

A cough that just won’t go away can be exhausting and confusing. Is it allergies? A sinus infection? Acid reflux? Asthma? Or something left behind after COVID?

In this episode of My Allergist Dad, Drew sits down with his dad, allergist and immunologist Dr. Z, to break down chronic cough—what it actually means, how it’s different from a short-term cough, and why so many people bounce between specialists without getting answers.

They walk through the four most common causes of chronic cough, including post-nasal drip from allergies or sinus infections, silent reflux, cough-variant asthma, and post-viral (including post-COVID) neurogenic cough. Dr. Z explains how these conditions overlap, how doctors narrow down the cause, and why treating the root problem—not just the cough—matters.

You’ll also hear why chronic cough can be so frustrating socially, why cough syrup often doesn’t help, and what new research is exploring for people whose cough doesn’t respond to standard treatments.

If you’ve been coughing for weeks (or longer) and wondering what’s going on, this episode will help you understand what questions to ask—and what might actually help.

As always, this show is for general informational and entertainment purposes only and is not medical advice.

Ever bite into a raw apple and feel your mouth itch… but you’re totally fine if it’s cooked? You’re not imagining it -  and it might not be a true food allergy.

In this episode of My Allergist Dad, Drew sits down with his dad, Dr. Z, a board-certified allergist and immunologist, to break down the surprising connection between seasonal allergies and food reactions. They explain oral allergy syndrome (also called pollen-food allergy syndrome), why foods like apples, peaches, nuts, and melons can trigger symptoms, and how pollen from trees like birch can be the real culprit.

You’ll learn:

• Why raw fruits and vegetables cause mouth and throat symptoms

• How pollen allergies can show up as “food allergies”

• The difference between mild oral reactions and real food allergy risk

• When allergy testing can be misleading

• How immunotherapy can reduce both seasonal and food-related symptoms

• Why “eating a little” matters more than people realize

They also get into desensitization, allergy drops vs shots, and why more exposure doesn’t always mean more tolerance.

If you’ve ever been confused about food reactions, allergy tests, or why your symptoms only happen certain times of year — this episode connects the dots.

 Have a question for Dr. Z? Listener questions drive the show.

myallergistdad@gmail.com

Can you actually develop allergies as an adult?
If you swear you were never allergic to anything growing up—but now pollen, pets, foods, or random hives are ruining your life—you’re not imagining it.

In this episode of My Allergist Dad, Drew sits down with his dad, board-certified allergist and immunologist Dr. Z, to break down adult-onset allergies and why they’re becoming more common. They talk about how stress, diet, hormones, pregnancy, illness, the microbiome, and even city living can quietly flip the switch on your immune system later in life.

You’ll hear:

• Why allergies are really a breakdown in tolerance

• How stress and poor sleep can make symptoms worse

• The role your gut, diet, and processed foods may play

• Why some “allergies” aren’t true allergies at all

• How hormones and pregnancy can trigger new reactions

• Why taking antihistamines every day might be masking the real issue

They also dig into food sensitivities, environmental triggers, post-pandemic immune changes, and why many people end up stuck in a cycle of self-medicating without answers.

As always, this episode mixes real medical insight with humor, relatable stories, and practical takeaways—so you can stop guessing and start understanding what your body’s doing.

Have a question for Dr. Z? There’s a link in the description to submit it and get it answered on a future episode.

email us - myallergistdad@gmail.com

If bread makes you feel terrible, you’re not alone, and you’re probably not “allergic” either.

In this episode of My Allergist Dad, Drew sits down with his allergist dad, a board-certified allergist and immunologist, to finally answer one of the most confusing food questions on the internet:

What’s the difference between gluten sensitivity, a real gluten allergy, and celiac disease?

We break down:

• Why most people who say they’re “allergic to gluten” technically aren’t

• What gluten sensitivity really is (and why it’s so common)

• How celiac disease is different from both an allergy and a sensitivity

• Why you might react to foods sometimes but not other times

• What “thresholds” have to do with gluten, dairy, alcohol, exercise, and stress

• Why some people can eat bread in Europe but not in the U.S.

• And how lactose intolerance fits into all of this (and the magic of Lactaid)

Along the way, we get into immune systems, food reactions that aren’t allergies, bathroom emergencies and Oregon Trail dysentery, and a genius Thanksgiving survival strategy!

If food messes with your stomach, skin, energy, or sanity - this episode will finally help it all make sense.

 Got a question? Leave a review or send it in to jump the line for future episodes.

Are peanut, tree nut, or sesame allergies really forever? And is it actually possible to train your body to stop reacting?

On this episode of My Allergist Dad, Drew and his real-life allergist father, Dr. Z, break down everything you actually need to know about food allergies, reactions, anxiety, and desensitization treatments. They start with a timely question about wildfire smoke, asthma, and whether air pollution can trigger allergic reactions, then dive deep into a listener-submitted topic: how to lessen or eliminate allergic reactions to peanuts, tree nuts, and sesame.

You’ll learn:

• The difference between true food allergy vs. cross-reactive pollen allergies

• Why peanut oil usually doesn’t trigger peanut allergies

• How sublingual immunotherapy (drops under the tongue) works

• The real difference between oral desensitization vs. sublingual therapy

• How stress, sleep, diet, and lifestyle can raise or lower your allergy threshold

• Why controlling allergies may actually help you fight off more infections

• The difference between a localized allergic reaction and full anaphylaxis

• And why your immune system is way more connected to your daily life than you think

Along the way, Drew learns about micro-dosing allergens, shared birch tree proteins, peanut RH proteins, eosinophilic esophagitis, and why your body sometimes reacts even when your brain knows you're probably safe. 

If you or someone you love deals with food allergies, asthma, or constant environmental reactions, this episode breaks it all down in a way that’s actually understandable — and even a little funny.

 Got a question for Dr. Z? Submit it for a future episode and you might hear it answered on air.

This week on My Allergist Dad, comedian Drew Zwetchkenbaum and his real-life allergist father, Dr. Z, break down the actual science behind introducing allergens to babies, the unexpected role of eczema and skin barriers, why farm kids and babies licked by dogs have fewer allergies, and whether breastfeeding exposes children to the foods the mother eats.

Plus:
• A wedding cat-bite emergency (yes, it ends in the ER)• The mysterious rise of mashed-potato bars• Why half of adults who think they have a penicillin allergy... don’t• And, a shocking revelation: babies get rashes for reasons other than food (who knew?)

If you're a new parent, expecting parent, aunt, uncle, cousin, or simply someone who likes hearing a doctor say the phrase “don’t rub shellfish on your baby,” this episode is for you.

We’ll tackle all the big questions:
• When should you introduce peanuts, eggs, and milk?• Does breastfeeding help prevent allergies?• Should pregnant or breastfeeding parents avoid certain foods?• What myths about baby allergies need to die already?• And… can you test for zebra allergies? (We ask. You’re welcome.)

Full of laughs, science, and frequent references to Rhode Island, this is your friendly, evidence-based guide to giving your kid the best shot at an allergy-free future

Subscribe now for more episodes. 

https://linktr.ee/myallergistdad

_________________________________________

0:00 - Intro

1:26 - Checking in: Allergic Reaction at a wedding

6:35 - What is the best way to introduce allergens 

to your baby? 

10:00 – When to Introduce Eggs, Peanuts, and Milk

11:00 – How breastfeeding interacts with early food introduction.

13:40 - Probiotics, Microbiome & Other Helpful Add-Ons

19:09 - Should you eat or avoid certain foods to decrease

allergen risk?

23:06 - What are some myths about allergies for babies?

24:20 – Closing Thoughts

25:10 – Outro

My Allergist Dad is a new podcast where comedian Drew Zwetchkenbaum and his board-certified allergist father, Dr. Z break down everything you need to know about allergies. Every week they answer YOUR listener submitted questions about asthma, food sensitivities, immune system issues, and do some father-son bonding while they do it!

Whether you’re a parent, allergy sufferer, or just curious about why your body does weird stuff, this show makes medical science simple, useful, and fun.
Subscribe and send us your questions!