https://www.lewrockwell.com/2023/10/joseph-mercola/the-crucial-role-of-vitamin-d-in-physical-and-mental-health/

“For decades, the conventional medical establishment and media have downplayed if not entirely ignored evidence showing that sun exposure is a crucial part of a healthy lifestyle that prevents, as opposed to creates, diseases — including cancer.”

‘Thankfully, Geddes also accurately notes that vitamin D supplements do not confer the same benefits as sun exposure, and that your (blood serum) vitamin D level is a biomarker of sun exposure, which is something I’ve been stressing for quite some time. Never in the history of mankind have we relied on pills for vitamin D production, and there’s no evidence to suggest that it would be wise to do so.’