About vitamin D

 “Sunlight is life.”

~ Dr. William Meller, board-certified internist

One of the most important things you can do for your health is to learn about the benefits of proper sunlight exposure and vitamin D. This section provides information on how to effectively incorporate sun exposure and/or vitamin D supplementation into your daily health regimen.

What is vitamin D?


  • Toxicity – Do I need to worry about vitamin D toxicity?

How to get your vitamin D

Vitamin D deficiency

Vitamin D cofactors

  • Magnesium – Vitamin D’s most important cofactor
  • Vitamin K – Helps keep calcium on the right track
  • Vitamin A (coming soon) – Only a tiny bit is needed to help vitamin D
  • Zinc – Helps vitamin D bind to its receptor
  • Boron – Helps alleviate symptoms of vitamin D deficiency

Page last edited: 14 February 2012

*These statements have not been evaluated by the Food and Drug Administration. The products and information presented on this website are not intended to diagnose, treat, cure, or prevent any disease.