Second Wave

More than two dozen studies of Covid-19 show us the way to TURN BACK the Second Wave.

Vitamin D versus Covid-19

These 27 studies show that having normal blood levels of vitamin D reduces Covid-19 risks:
* vitamin D reduces risk of infection [7, 8, 9, 11, 12, 14, 16, 23, 27]
* vitamin D reduces risk of having a severe case [1, 3, 4, 5, 15, 17, 20, 22, 24, 25, 26]
* vitamin D reduces risk of hospitalization, ICU care, or mechanical ventilation [2, 10, 14, 15, 21, 22, 24, 26]
* vitamin D reduces risk of dying from Covid-19 [4, 6, 7, 9, 12, 13, 17, 18, 19, 22, 24, 25]

And all you need to get those benefits is a normal blood level of vitamin D:
30 to 100 ng/ml, which is the same as 75 to 250 nmol/liter.

Note, however, that one study [27] found that vitamin D levels in the range of 50 to 60 ng/ml had the lowest risk of infection from Covid-19, about half the risk of the blood level 20 ng/ml. But the other studies show that 30 ng/ml (or higher) is enough.

The type of vitamin D measured by lab tests in the blood is called “25(OH)D”.

“Vitamin D deficiency is defined as a 25(OH)D below 20 ng/ml (50 nmol/liter), and vitamin D insufficiency as a 25(OH)D of 21–29 ng/ml (525–725 nmol/liter).” [86]

What is causing the Second Wave? Vitamin D blood levels are seasonal; they rise and fall from one season to another. In summer, vitamin D levels are higher because people are out in the sunshine. When sunshine (specifically UV-B) strikes the skin, the body makes vitamin D. But as people spend more time indoors, in autumn and winter, vitamin D blood levels fall. The levels decrease from late September to October to November, and they reach their lowest extent in December through March.  READ MORE