What If We Got Sunlight All Wrong? The Truth About Vitamin D & Chronic Disease
The Dr. Hyman Show14 Heinä 2025

What If We Got Sunlight All Wrong? The Truth About Vitamin D & Chronic Disease

Sunlight has long been vilified for its link to skin cancer, yet hiding from it entirely may be costing us far more. Vitamin D, made primarily through sun exposure, plays a pivotal role in everything from bone strength and immune defense to mood regulation, cancer prevention, and even longevity. Shockingly, over 80% of people have levels too low to unlock its protective powers—putting them at greater risk for chronic illness, and even premature death. Research shows that raising vitamin D to optimal levels could prevent hundreds of thousands of deaths each year, rivaling or surpassing the impact of many medical interventions. With a few minutes of daily sun, the right kind of supplementation, and awareness of how our lifestyles block this essential nutrient, reclaiming our health may be simpler than we think. In this episode, I discuss, along with Dr. Cindy Geyer, the critical role of vitamin D in preventing chronic disease, boosting immunity, and promoting overall health. Dr. Cindy Geyer received her bachelor of science and her doctor of medicine degrees, with honors, from the Ohio State University. She completed residency in internal medicine at Strong Memorial Hospital in Rochester, N.Y. and is triple board certified in internal medicine, integrative medicine and lifestyle medicine. This episode is brought to you by BIOptimizers. Head to bioptimizers.com/hyman and use code HYMAN10 to save 10%. Full-length episodes can be found here: Do You Need To Take Vitamin D?Choosing Skin Care Products that Won’t Make You SickWhy Boosting Your Vitamin D Could Change Your Life

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Breast Implants Are Making Women Sick—Here's What's Happening | Dr. Jonathan Kanevsky

Breast Implants Are Making Women Sick—Here's What's Happening | Dr. Jonathan Kanevsky

Breast implants may have become increasingly common—but for some women, the experience doesn’t always unfold the way they expected. On this episode of The Dr. Hyman Show, I sit down with Dr. Jonathan...

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Why Endometriosis Keeps Coming Back (And How to Break the Cycle)

Why Endometriosis Keeps Coming Back (And How to Break the Cycle)

Endometriosis affects 1 in 10 women yet it often takes years to diagnose, and many are told their pain is “normal” or simply treated with birth control or surgery. But endometriosis isn’t just a hor...

30 Maalis 40min

Your Baby's Metabolism is Being Decided Right Now | Jessie Inchauspé

Your Baby's Metabolism is Being Decided Right Now | Jessie Inchauspé

Pregnancy is often filled with anticipation, excitement, and a lot of questions. But biologically, it’s also a powerful window when a baby’s metabolism and long-term health begin to take shape. On th...

25 Maalis 59min

Office Hours: The Fiber Trend—How Much Is Too Much?

Office Hours: The Fiber Trend—How Much Is Too Much?

Fiber is having a moment—but more isn’t always better. From “fiber maxing” trends to high-fiber hacks promising weight loss and better metabolism, it’s easy to assume that piling on more fiber is the ...

23 Maalis 21min

The Skill No One Teaches Us About Love | Baya Voce

The Skill No One Teaches Us About Love | Baya Voce

Falling in love can be easy. Staying connected when conflict and stress show up is where the real work begins. On this episode of The Dr. Hyman Show, I sit down with relationship repair expert Baya V...

18 Maalis 1h 20min

Office Hours: Your Pregnancy & Postpartum Questions Answered

Office Hours: Your Pregnancy & Postpartum Questions Answered

Pregnancy doesn’t just change your life—it transforms your entire biology. Hormones shift, metabolism adapts, nutrient needs increase, and your nervous system recalibrates in ways most women are nev...

16 Maalis 30min

Why IVF Isn’t Fixing the Fertility Crisis (and What Actually Will) | Dr. Ann Shippy

Why IVF Isn’t Fixing the Fertility Crisis (and What Actually Will) | Dr. Ann Shippy

Fertility struggles are often treated as a problem to solve only after they appear. But what if they’re actually a signal from the body that something deeper needs attention? On this episode of The D...

11 Maalis 1h 5min

Office Hours: Peptides 101: The Truth About GLP-1, Recovery, and Anti-Aging

Office Hours: Peptides 101: The Truth About GLP-1, Recovery, and Anti-Aging

Peptides are everywhere right now—touted as tools for weight loss, muscle growth, faster recovery, and even longevity. But what are they actually, and do they live up to the hype? In this episode of O...

9 Maalis 20min

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