While studies show that 50mcg - 250mcg (2,000IU - 10,000 IU) of vitamin D per day may be needed for optimal health, most Americans get less than 10mcg (400 IU). Vitamin D supports: healthy brain function, immune and cardiovascular systems, healthy blood sugar levels, prostate and breast tissue health, and regarding bone health, it helps the body absorb calcium and deposit it into the bones. In fact, new studies show more receptor sites in our cells for Vitamin D than for any other nutrient.
Vitamin D: Nature’s Most Important Nutrient
How Much Vitamin D Does One Need?
How Can One Get Enough Vitamin D?