Vitamin D, inflammation and rheumatoid arthritis: what is the relationship?

On the other hand :

[In people with diabetes and COVID-19] there is a strong rationale for the therapeutic administration of vitamin D supplements to reduce respiratory complications related to COVID-19 or to prevent, in the event of infection, a severe form of COVID-19. Should you take vitamin D if you have rheumatoid arthritis?
When I present the results of these studies to people with rheumatoid arthritis, this is their conclusion.

Some choose not to pay special attention to their vitamin D intake or sun exposure, as there is no evidence on the effect of vitamin D on rheumatoid arthritis.

They also say that taking too much vitamin D can have harmful effects (nausea, vomiting, constipation, muscle weakness, loss of appetite, and confusion).

Therefore, they prefer to refrain from taking vitamin D supplements or changing their diet.

Others tell themselves that “a little extra vitamin D can’t hurt.” They think that if we ever discover that vitamin D is good for rheumatoid arthritis, they’ll be glad they took it.

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