Dying young: Americans less likely to make it to 50

Because vitamin D is so cheap and so clearly reduces all-cause mortality, I can say this with great certainty: Vitamin D represents the single most cost-effective medical intervention in the United States. ~ Dr. Greg Plotnikoff, Medical Director, Penny George Institute for Health and Healing, Abbott Northwestern Hospital in Minneapolis.

"This is like the Holy Grail of cancer medicine; vitamin D produced a drop in cancer rates greater than that for quitting smoking, or indeed any other countermeasure in existence. ~ Dennis Mangan, clinical laboratory scientist.

No other method to prevent cancer has been identified that has such a powerful impact. ~ Dr. Cedric Garland, Vitamin D expert.

I would challenge anyone to find an area or nutrient or any factor that has such consistent anti-cancer benefits as vitamin D.
The data are really quite remarkable. ~ Dr. Edward Giovannucci, Vitamin D expert.

Our most important hormones depend upon adequate reserves of cholesterol for their production and nowhere is this more important than as the precursor substance for the synthesis of Vitamin D, known also as calcitriol. Researchers in this field are sufficiently concerned from the results of their studies to pronounce that we are in the midst of an epidemic of vitamin D deficiency of immense proportion. ~ Duane Graveline MD MPH, former NASA Astronaut, former USAF flight surgeon, and retired family doctor.

The problem is that vitamin D is not really a vitamin, it's a hormone. If your thyroid hormone level was low, you'd gain 20, 30, or more pounds in weight, your blood pressure would skyrocket, you'd lose your hair, become constipated, develop blood clots, be terribly fatigued. In other words, you'd suffer profound changes. Likewise, if thyroid hormone levels are corrected by giving you thyroid hormone, you'd experience profound correction of these phenomena. That's what I'm seeing with vitamin D: restoration of this hormone to normal blood levels (25-OH-vitamin D3 50 ng/mL) yields profound changes in the body. ~ Dr. William Davis, cardiologist.

Vitamin D is cholecalciferol, a hormone. Deficiencies of hormones can have catastrophic consequences. ~ Dr. William Davis, cardiologist.

In terms of getting more bang for your health care buck, Vitamin D testing and supplementation for the population is one solution which is guaranteed to improve overall health of the population at a ridiculously low cost. ~ Jeffrey Dach MD

The danger of too much sun is minimal — the danger of too little sun is enormous. ~ Dr. Michael R. Eades.

If you think of it evolutionarily, it's the oldest hormone on this Earth. I don't think that this is going to be a flash in the pan. ~ Dr. Michael F. Holick, Vitamin D expert.