Is this actually real? I don't see any link to a study. The use of AI has me suspect, as does visiting the main page of the site and seeing: "A 365º view of your heart health" I guess that could be intentional but it comes off as someone mistaking days in a year with degrees in a circle.
There are two main caveats to the TARGET-D study. First, this was presented at the American Heart Association scientific sessions, but the full manuscript isn’t out yet. It’s possible the results will end up not being statistically significant, having a methodological flaw, and so on. In the presented results, the reduction in heart attack risk was statistically significant but the change in overall death and stroke risk had a p value > 0.05. Second, while Vitamin D seems to be an effective intervention to reduce heart attack risk, we don’t yet know whether Vitamin D is an independent marker of heart disease risk or whether it’s reflecting known mechanisms such as inflammation and calcification.
This was here in this article most likely not the case, I assume, but still it is bad to talk about the data without having published the article already.