[pwr1]

I take 10k-50k IU vitamin D3 every day and haven't been sick in years (knock on wood). Not saying that vitamin D3 is protecting me, but just saying...

[bookofjoe]

Might be worth checking your blood level. $17.46 to do so at home seems reasonable.

https://altruan.com/products/all-test-vitamin-d-test-kit-rap...

[slow_typist]

The test will probably be useless, it will only show that op has enough vitamin D in their blood

[bookofjoe]

>... it will only show that op has enough vitamin D in their blood

How can you know the result if you haven't tested?

[slow_typist]

I can’t obviously. But if they don’t have enough, despite massive overdosing for years, that would be very surprising. (The test only shows one of three possible outcomes. It is not a quantitative procedure.)

[bookofjoe]

Concur: that would be surprising. I was more focused on the possibility of having a dangerously high blood level which is fraught with negative sequelae.

This test — among many others — offer quantitative results at home:

https://empowerdxlab.com/products/product/VITD?gad_source=1&...

[slow_typist]

Pretty expensive though. Lab costs in Germany are <20 € for a quantitative test and the cost of the physician for taking the sample is usually covered by insurance.

[pwr1]

Obviously I do that. Also take appropriate amounts of K2.

[bookofjoe]

>Obviously I do that

It wasn't obvious to me.

[slow_typist]

Wow that is a lot. 4,000 I.U. is the upper limit according to NIH — https://ods.od.nih.gov/factsheets/VitaminD-Consumer/#:~:text...