It's already been confirmed many times over. We knew this in April from analysing Italian cases. It's just been left out of media reporting because of fears they are fat shaming.
Is there good data rather than just anecdotes? I am obese myself, and concerned about catching it.
This is the main reason blacks in USA are disproportionally hard hit by Covid-19.
I don't think so. Blacks are somewhat more likely to be obese than whites, but by only about 10 percentage points. Asians are much less likely to be obese, and you don't see them being almost immune.
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I think vitamin D plays a big role.
Since higher melanin content blocks more UV light, it inhibits calciferol (D
3) synthesis in the skin. Thus black people, especially in higher latitudes are at higher risk of vitamin D deficiency. Vitamin D has been linked with COVID19 outcomes.
Adequate levels of vitamin D reduces complications, death among COVID-19 patients
Since I spent quite a bit of time this Summer swimming in an outdoor pool, and I also eat fish, often salmon, twice a week, I have that going for me, which is nice. </caddyshack>
Another reason is probably higher rate of employment in jobs requiring face-to-face interactions - food service, retail and the like.
Lastly, there could be some unknown genetic risk factor that may be more widespread in certain populations. We know of such already - like the
sickle cell trait, prevalent in people of sub-Saharan African origin, conferring resistance to malaria or the
CCR5-Δ32 mutation, somewhat prevalent in northern Europeans, that confers resistance (especially if homozygous) to HIV infection.