8. Vitamin D Isn’t a Vitamin: Rethinking “Low D,” Sunlight, Minerals & Hormone Balance

Vitamin D Isn’t a Vitamin: Rethinking “Low D,” Sunlight, Minerals & Hormone BalanceIn this thought-provoking episode of Overflow: A Women’s Wellness Roundtable, hosts Becky Webb, Andrea Lehman, and Bronwyn Deiter take a deep dive into one of the most misunderstood topics in modern health: vitamin D — also known as hormone D.If you’ve ever been told “your vitamin D is low — take more”, this episode may completely shift how you understand that advice.Rather than fear-based messaging or one-size-fits-all supplementation, the hosts explore how vitamin D is actually made in the body, why blood tests don’t tell the full story, how sunlight, minerals, and circadian rhythm matter, and why forcing vitamin D higher may create more imbalance — not better health.This conversation is educational, nuanced, and empowering — helping women reconnect with their intuition and understand their bodies more deeply.✨ What We Talk AboutWhy vitamin D is technically a hormone, not a vitaminHow the body actually makes vitamin D from sunlightThe critical role of cholesterol and magnesium in vitamin D productionWhy sunscreen blocks vitamin D synthesisThe difference between storage vitamin D (25-D) and active vitamin D (1,25-D)Why most doctors only test the storage form — and why that’s incompleteHow vitamin D levels naturally fluctuate with seasons and immune activityWhy low vitamin D often reflects inflammation or illness, not deficiencyHow synthetic vitamin D skews population “normal” lab rangesThe relationship between vitamin D, calcium, magnesium, potassium, iron, copper, and vitamin AHow high-dose vitamin D can contribute to:Potassium wastingCalcium imbalanceIron dysregulationOxidative stressWhy feeling “better” on vitamin D doesn’t mean it’s fixing the root causeVitamin D receptors (VDRs) and how synthetic D may clog signaling pathwaysThe surprising role of rosemary in supporting vitamin D receptor functionWhy cod liver oil is the only true food-based vitamin D sourceHow circadian rhythm, melatonin, sleep, and winter light exposure support immunityRed light therapy, seasonal rhythms, and supporting the body without forcing numbers💛 Key TakeawaysLow vitamin D is often a signal, not a problem to fix. It may reflect immune activity, inflammation, or seasonal shifts.More vitamin D is not always better. High dosing can create mineral imbalances and stress the body.Sunlight is the body’s intended source of vitamin D. Supplements were never meant to replace natural light signaling.Blood tests don’t tell the full story. Storage levels alone cannot show how vitamin D is actually being used.The body is brilliantly designed. When we support minerals, light exposure, sleep, and stress regulation, vitamin D often self-regulates.Trust your intuition. Numbers matter — but context and whole-body wisdom matter more.🧡 Supportive Approaches DiscussedSafe, mindful sunlight exposureSupporting magnesium intakeAvoiding unnecessary high-dose vitamin D supplementationUsing cod liver oil instead of isolated vitamin DIncreasing rosemary in the dietSupporting circadian rhythm and sleepRed light therapy as a seasonal support toolReducing stress and honoring seasonal energy shifts📚 Free Resources MentionedBronwyn's Blog7 Tips for Managing Stress and Loving on Your Thyroid (Andrea)Becky's Free ResourcesD-Minder App (sun exposure tracking)My Circadian App📌 Connect with Your HostsFollow us on Instagram:Becky WebbBronwyn DeiterAndrea Lehman.🎧 If You Loved This Episode…Please subscribe and leave a review on Apple or Spotify.Your support helps more women learn to live from overflow instead of depletion — mind, body, and soul. This is a public episode. If you would like to discuss this with other subscribers or get access to bonus episodes, visit overflowpodcast.substack.com