Mast Cells, Histamine & Perimenopause: What Every Woman Should Know | Dr. Tracy Shevell

This week on Her Time, Her Health, I sit down with Dr. Tracy Shevell — a board-certified OB-GYN and maternal fetal medicine specialist with over two decades in academic medicine, and founder of Blue Moon Perinatal, a high-touch concierge OB practice built around whole-person care. We dig into a topic that doesn't get nearly enough airtime: the surprising link between mast cells, histamine, and perimenopause. Dr. Shevell breaks down why so many women's symptoms — flushing, headaches, GI issues, palpitations, poor sleep — get dismissed as "just anxiety," and how a simple over-the-counter antihistamine trial can sometimes offer real relief while the medical system catches up. We also talk about medical dismissal, patient advocacy, the three life cycles of womanhood, and her deeply personal path from burned-out high-risk OB-GYN to entrepreneur and author of the upcoming book Labor and Deliverance. In this episode, we cover: The immune system's changing relationship with hormones across pregnancy, perimenopause, and menopause Why estrogen aggravates mast cells, and progesterone stabilizes them Mast cell activation syndrome (MCAS), histamine intolerance, and Long COVID's role in bringing it to light The Pepcid/antihistamine "trial" approach and how to safely self-advocate How AI can help women translate medical jargon before their doctor visits Puberty and perimenopause as mirror-image hormonal transitions The patient encounter that pushed Dr. Shevell to leave traditional medicine Building a following, writing a book, and turning pain into purpose Timestamps: 00:00 – Cold open: where does the Pepcid/antihistamine trend really stand? 01:33 – Meet Dr. Tracy Shevell: training, career, and Blue Moon Perinatal 03:05 – Her upcoming book, social following, and advocacy work 03:52 – Setting up today's topic: the immune system in midlife women 04:40 – Pregnancy's unique hormone–immune system interplay 05:27 – Why perimenopause reactivates the immune conversation 06:13 – Estrogen aggravates mast cells, progesterone stabilizes them 07:00 – Hormonal instability and its effect on autoimmune conditions 07:49 – Why some immune issues quiet down after menopause 08:35 – Why perimenopause hormone therapy takes trial and error 09:24 – Menopause certification, MCAS, and how nuanced treatment really is 10:10 – Mast cells, Long COVID, and "it's not just anxiety" 10:56 – Walking the line between real science and internet trends 11:44 – The Pepcid/antihistamine reel that sparked backlash 12:30 – Framing antihistamines as a low-risk 2-week test 13:17 – Is histamine intolerance a real diagnosis? The two camps 14:02 – Why first-line therapy stays safe regardless of the "official" label 14:49 – How histamine builds up in the body 15:37 – Long-term stakes: bone, brain, and cardiometabolic health 16:23 – Using AI to decode medical research before your appointment 17:12 – Histamine overlap with perimenopause and PMDD symptoms 17:59 – The "overworked mom" analogy for hormone-triggered mast cell flares 18:45 – Puberty vs. perimenopause: mirrored hormonal transitions 19:31 – The maiden, mother, crone: reclaiming women's life cycles 20:20 – The heartbreaking patient moment that sparked a career pivot 21:07 – "I don't know who my doctor is": a system failing women 21:54 – Quitting medicine, burnout, and being diagnosed with her own mystery illness 22:43 – Realizing no one was caring for the "whole woman" 23:29 – Entering the "wild west" of medical entrepreneurship 24:15 – Becoming a relatable, natural voice on social media 25:02 – Talking to a phone but really talking to a patient 25:50 – Learning to post every day (and finally feeling excited again) 26:39 – Reaching women in underserved communities through content 27:26 – Turning pain into purpose 28:14 – Learning to actually rest instead of burning out again 28:38 – Writing the book: journaling, dinner-party stories, and finding the will 29:47 – The long, "soul-sucking" road to getting published 30:34 – Inside the book: medical, emotional, and spiritual well-being 31:22 – Publication date and why vulnerability felt scary 32:08 – Where to find and follow Dr. Tracy Shevell 32:53 – Closing thoughts and gratitude 33:40 – Sign-off and how to support the show Connect with Dr. Tracy Shevell: 📸 Instagram / TikTok: @tracychevellemd 🔗 Website: new site linked in her bio 📚 Upcoming book: Labor and Deliverance: Reclaiming the Healing in Women's Health (Harper One, January 2027) If today's conversation inspired you, taught you something new, or helped you feel more empowered in your health journey, please subscribe, leave a review, and share this episode with someone who needs to hear it. Women's health is longevity. The choices you make today shape the quality of your tomorrows. Learn more about your ad choices. Visit megaphone.fm/adchoices