Do not buy into IOM's new advice on vitamin D.

I can hardly find words to describe just how crazy the Institute of Medicines new guidelines on vitamin D make me.
Ignore them please. Or should I say follow them at your own peril.
They are saying that if we just reduce the definition of adequacy regarding our level of vitamin D from 30 ng/ml to 20 ng/ml that 80% of Americans will not need supplements.
In other words, 80% of Americans are at or above 20 ng/ml so lets just call that OK.
But it isn't ok. Being at 30 ng/ml ( compared to being deficient) is linked to dramatically reduced incidence of heart attack, stroke, major cardiovascular events, respiratory infections and rates of major cancers. 
DO NOT accept a reduced standard. It is the equivalent of austerity measures for your health. It is nutritional foolishness. old school thinking. All of the noted vitamin D experts challenge this mindset. And I agree with them.
Keep your target level of vitamin D ( measured as 25OH D) at or above 30 ng/ml. Normal range is 30-100 ng/ml. Anything less is a call to action.