You would need to drink over 4 gallons of fortified milk per day to get the recommended 8000 IU. Milk just isn't fortified enough, because the current daily recommendations are so low.
Leave some mushrooms out in the sun, gills up, and enjoy ;). Though you may want to calculate it out first. This research survey at least makes me more confident in taking larger doses of vitamin D.
Re:The Big Vitamin D Mistake
by tathougies on Thursday December 07, 2017 @01:32AM
(#15868133)
Except the majority of people on the planet cannot digest lactose, and drinking more milk can cause all sorts of unpleasant digestive symptoms.
Milk costs more than a vitamin
But they claim that we should be aiming to get above 75, and it would be best if we could get above 100. So drink more fortified milk.
Edit: oops, looks like I read it wrong. 50 nmol/L isn't the threshold the current RDA gets us to, it's way lower than that.