When the Institute of Medicine reviewed data on vitamin D, the panel concluded that adults need no more than 600 IU of the vitamin daily.
Underestimation
Now, a group of scientists from Creighton University and the University of California, San Diego, are presenting data claiming that the IOM experts underestimated needs by an order of magnitude.
The nutrition researchers examined data from a different population than that used in the initial calculations, and came up with a recommendation of approximately 7,000 IU per day of vitamin D. They point out that even though this is dramatically higher than past recommendations, it is still substantially below the upper level as established as safe by the Institute of Medicine.
