Think about taking vitamin D.

Another golden oldie over the years in this forum has been whether vitamin D plays a role in the pathogenesis of PD. I've been skeptical in the past, but I now think it's worth reevaluating given that it might help in the fight against coronavirus.

The Scottish Government have recently revised their advice on vitamin D to reflect the COVID-19 situation (2nd April):

"Since it's difficult for people to get enough vitamin D from food alone, everyone ... should consider taking a daily supplement containing 10 micrograms of vitamin D. ... This advice is especially important for people who are indoors all of the time. ... The current guidance on sun exposure should be followed: 10 to 15 minutes of unprotected Scottish sun exposure is safe for all. Once sunscreen is correctly applied, vitamin D synthesis is blocked. Staying in the sun for prolonged periods without the protection of sunscreen increases the risk of skin cancer."

44 - not found - gov.scot

There is other circumstances that may suggest an negative association between vitamin D and CONVID-19. For example, difference in the infection rates of various ethnic groups has been reported.

"14% of people in England and Wales are from ethnic minority backgrounds ... However, the Intensive Care National Audit and Research Centre found that 34% of more than 3,000 critically ill coronavirus patients identified as black, Asian or minority ethnic."

Coronavirus: Ethnic minorities 'are a third' of patients - BBC News

The differences could be due to noise in the data; or due to differences in social conditions; or, it may be due to physiological differences. Although no proof is given (e.g. a double blind placebo control clinical trial), the following linkages seems plausible:

darker skin -- more melanin -- less vitamin d from sunlight -- weakened immune system

John