I know that study saying that. Unfortunately, that amount is equal 10 minutes in the sun.
There are studies saying that intake of 50-100000 daily is no problem even over months.
Taking only several minutes of sun is not sufficient. Especially when your skin is not very white. Then you need much more.
How do you explain that in regions where ppl have lots of sun exposure, cancer rate is almost zero. (greece) They take sometimes several hours of sun. Cancer doesn’t like sun exposure.
Among your logic, street worker would be all toxified cause they are exposed for several hours. That is not the case. The opposite is true.
Overkill is not going into the sun. Saying the opposite is propaganda. Cancer rate and osteoporosis rate in countries where ppl have middle and low range vit.d levels is rising and higher. Vit.d is very important for your overall hormone system and especially libidowise.
You should not intake more than 50000 IU at once cause the body cannot absorb more than that within few hours.
How do you explain that a guy intaking several 100000 IU a day could cure several issues in only one year? There is a book to be found about that protocol on amazone. Lots of ppl had tried that as well. Me too. Great results especially longterm.
So, among your theory this guy should have been over killed. But the opposite occurred.
Best is anyway to have sun exposure. Also due to the fact that exposing your body will increase body temperature which is in some cases a viral point.