There are people who believe that the vaccines are much more capable than they are, and go as far as lionizing Pfizer in the form of things like tattoos, Fauci fan art, and so on. Yes, they are a very small segment of the population, but I've run into these people in real life. One of my best friends has a faith-like belief in the vaccines to such a point that he totally clams up if I show a shred of skepticism. This was a guy who practiced formal debate and we used to have many intellectual discussions despite our differences.
The people who believe Vitamin D is their Lord and Savior are reacting to the fact that the establishment has almost entirely abandoned the pretense of "diet and exercise" in favor of pharmaceuticals to the exclusion of almost anything else. Vitamin D isn't a cure, but it is very underappreciated, and when the entire medical system not only fails for decades to solve obesity but then fails to tell people to take action in their own lives to get themselves fit and healthy, it's cause to raise an eyebrow no matter what you think about Vitamin D.
Both are a result in a division caused by a system that fails to explain its own legitimacy. I think it's great that we have the vaccines. I think Vitamin D is great. I think both are imperfect. But I can't blame people for attaching themselves to either one as if they are separate churches to attend; what have the establishment done to establish our trust?
> But that 5000 IU/day put me near overdose territory when I got my serum levels checked. Even my doctor, who is very pro-Vitamin D supplementation, warned me to significantly cut my supplementation.
That's interesting. It's been a really long while since I looked at research papers around Vitamin D, but my conclusion was that what was thought to be a daily limit for Vitamin D wasn't entirely justified for the average healthy person, but I'll have to check that again. I've been either getting some sunlight every day or taking 5000 IU supplementally every day and haven't suffered any obvious consequences.
Sunlight really is the best though, and you don't need that much sunlight to get a sufficient dose. It also raises levels of nitric oxide which has its own benefits.