45:41
Hypothyroidism & Your Health with Dr. Thierry Hertoghe
44:55
Why is Vitamin D So Important in Health and Longevity?
35:27
Higher Vitamin D levels reduce the risk of 19 types of cancer - Dr William Grant
1:02:23
Sunlight vs Supplements: Vitamin D, Bone Health & Autoimmunity - with Professor Michael Holick
1:06:27