How Much Vitamin D Do We Really Need?

The Doctor's Farmacy with Mark Hyman, M.D.

Are you getting enough vitamin D? This powerful nutrient does so much more than just support bone health—it’s essential for mood, energy, immunity, and even protection against serious diseases like cancer and COVID. Yet, approximately 80% of Americans are deficient due to limited sun exposure and the depletion of nutrients in our modern food supply. In this episode, I break down why vitamin D is critical for your health, the optimal levels you should aim for, and how to get your daily dose safely—whether through the sun, diet, or supplements.

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Full-length episodes of these interviews can be found here:

Do You Need To Take Vitamin D?

Supplements: Useful Or Useless? with Dr. Elizabeth Boham

The Science Behind Vitamin D, Our Rampant Deficiency, And Its Harmful Impact On Our Health

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