Decreasing vitamin D levels due to sunscreen use and indoor lifestyles correlate with the rising prevalence of autism.

“if you look at this at the same time period where autism is rising vitamin D in the population is all is decreasing that's largely as a consequence of awareness from skin skin cancer people wear sunscreen now a lot more uh also technology everyone has a personal laptop we inside in offices on our laptop televisions are ubiquitous people are playing video games children are playing video games so vitamin D levels have been going down at the same time that autism levels have been rising”