Why Vitamin D is Not Enough:
A Trio of Articles by Stephen Levine, PhD

• A Bold New Approach to Supplementation

Though vitamin D deserves to be nominated nutrient of the decade for its amazing properties, the current recommendations to this pro-hormone may be misguided.

• Safely Supplement Vitamins D and A - Key Concepts of this Special Issue

Balanced doses of A, D, K and E are likeliest to lead to optimal health.

• The Marriage of Vitamin D and Vitamin A: A Match Made on Earth

These two pro-hormones are tightly linked, and once we understand how, a clear picture emerges of the healthiest, safest route to supplementation.

The Virtue of Modesty: How Regular, Modest Doses of Sun and Vitamin D Are Key to Long-term Health

An Interview with Krispin Sullivan, CN

Dose is key, enough and not too much. Test, test, and re-test, for up to three years, to determine optimal levels of supplementation.

Vitamin A: The Key to a Tolerant Immune System?

By Michael E. Ash, B.Sc. (Hons) D.O. N.D. F.Dip ION

Vitamin A has profound effects on the gut mucosal immune system and can calm potent inflammatory molecules.

Vitamin K: Beyond Clotting

Q & A with Sarah L. Booth, PhD