It seems like the nth example of cases where isolating a vitamin as a pill, is not a substitute for acquiring it in the normal way for our species. We are not

It seems like the nth example of cases where isolating a vitamin as a pill, is not a substitute for acquiring it in the normal way for our species. We are not descended from nocturnal species, as our vision system and other characteristics show. We are evolved to spend a lot of time outdoors. The fact that we have been told for 30+ years to avoid the sun, is an awkward example of experts being incorrect. It happens, even in fields where experts are normally correct, and nutrition is not one of those fields. Keeping a non-nocturnal animal out of the sun all the time, is likely bad for us, in ways that are measured (but not necessarily caused) by vitamin D levels.