Vitamin D Measurement the Key to Change

49:36
Vitamin D, Sunshine, Optimal Health: Putting it all Together

54:11
Sunlight and Your Health: An EnLIGHTening Perspective

1:21:12
Lifestyle and Aging:Is Vitamin D the Fountain of Youth? : Full Presentation

17:18
Boost Your Bone Density with These 6 Life-Changing Tips

39:02
A-TANGO Masterclass 2022 - Advances in the Treatment of Cirrhosis and ACLF (Prof. Dr. Thomas Berg)

42:43
Cost/Benefit of Optimal Health with Sunshine Vitamin D

28:18
In Conversation with David Frum: Trump's tariffs against Canada and America's place in the world

52:42