Vitamin D3 is actually not a true vitamin, but a hormone. However, for the sake of clarity, I will refer to it as a vitamin.

Most of the vitamin D3 we get is generated by an interaction of the sun’s UV rays with chemicals in our skin. Very little comes from our diets.

One of the major functions of vitamin D is modulation of the immune system.

It does this by producing a series of antibiotic-like compounds (called antimicrobial peptides) that kill infectious organisms.

Vitamin D3 also keeps the immune system from overreacting, which is a major cause of death from infections such as the flu and measles.

Recent studies have shown that vitamin D3 deficiency is extremely common because of the use of sun blockers and the wearing of hats and other sun-shielding clothing.

Dark-skinned people have very low levels of vitamin D3, putting them at a higher risk of infections and complications from infections (and vaccines).

Combined with urban crowding, poor sanitation, poor personal hygiene, and exposure to high levels of particulate matter from automobile engines, vitamin D3 deficiency is a formula for out-of-control infections.

Yet despite all of this, I have never heard of a campaign by the vaccine proponents to begin a program of vitamin D3 supplementation — not even among the most at-risk population.

Pregnant women should supplement with at least 2,000 IU of vitamin D3 throughout their pregnancy and during breast-feeding; newborns can be given at least 500 IU of vitamin D3. Small children can take 1,000 IU a day.

Adults should have their blood vitamin D3 levels checked. If the reading is below 25 ng/mL, they should take 10,000 IU a day for two weeks, and 5,000 IU a day thereafter.

They should then repeat the blood test one month after starting their supplementation.

Optimal vitamin D3 levels are 65 to 75 ng/mL, but not more than 100 ng/mL.