Not true. I am prescribed 50,000 IU once a week by an MD. Apparently I had very low vitamin D, have darker skin, and live in a dark part of the world during win

Not true. I am prescribed 50,000 IU once a week by an MD. Apparently I had very low vitamin D, have darker skin, and live in a dark part of the world during winter. Which is more than was used in this experiment.