Are you deficient in Vitamin D?

In the excellent website wattsupwiththat, Christopher Monckton reports in part,

early studies showed an interesting result, which the Marxstream media lazily attributed to capitalism’s imagined failures: the darker your skin, the more your risk from the infection. In Britain, all of the first ten doctors to die from Covid-19 were dark-skinned.

...The pandemic has struck most severely above 35°N (editorial in Aliment. Pharm. Therap., and Marik et al. 2020), just as flu tends to end as summer comes. When the skin is exposed to the sun, the body makes Vitamin D3 more efficiently than through diet: salmon, tuna, mackerel, milk, some cereals, mushrooms and eggs all contain Vitamin D.

Vitamin D, used by the body to absorb calcium and grow bones, increases the production of antiviral proteins and decreases cytokines, the immune molecules known to cause a storm of dangerous inflammation, particularly in Chinese-virus patients. A shortage is linked to rickets, cancers, heart disease and weight gain. It is efficacious against many diseases:

Vitamin D deficiency is common not only in dark-skinned people, whose pigment blocks sunlight, but also in obese people, where the vitamin gets sequestered in fat cells; in those with Type 2 diabetes, where Vitamin D improves sensitivity to insulin; in the elderly, who avoid the sun and eat less; city dwellers, who see less of the sun; and men, who have lower Vitamin D levels than women in the winter. All of these groups are more likely to suffer severely if infected with the Chinese virus.

Read more here.