Vitamin D in Milk
A little vitamin D is added to milk. Drinking 3 glasses of milk daily nearly meets the old standard of 400 IU daily, but 16 glasses of milk – a whole gallon daily would be needed to meet the new standard of 2000 IU daily.
Unfortunately, there is little monitoring of the actual amount of Vitamin D in “Vitamin D Fortified Milk”. A small study of milk in the Washington, DC area in 2007 showed that only 40% of milk purchased in local stores had the correct amount to meet the government standard of 125 IU in 8oz of milk. Vitamin D can break down if exposed to direct light through a clear container. Perhaps sometimes not enough is added to the milk during processing.
The message is that you will not get enough Vitamin D from milk alone. Clearly the vile tasting old home remedy of Cod Liver Oil is needed in addition to milk. Unfortunately most fish oil sold today has Omega 3 but not Vitamin D. Unless you stored up a huge amount of Vitamin D from Sunshine in the summer, you are probably quite low now.
The only sure way to know your Vitamin D status is to Test for Vitamin D Level.
Jay Ginther, MD
2008 / Revised Feb 2011