“Pending results of such trials, it would seem uncontroversial to enthusiastically promote efforts to achieve reference nutrient intakes of vitamin D, which range from 400 IU/day in the UK to 600–800 IU/day in the USA”
I agree. It is a no brainer. Mechanistically well understood. There are several other publications from respected sources showing encouraging results. I think that L CEB ers should be on 5000-10000 daily doses.
Now if Trump says anything positive about D, then forget it.