Without a doubt, one of the most important nutrients for optimal health is vitamin D. But questions still remain about just how much is needed. ...What is clear is that the recommended dietary allowance (RDA) should really be 10 to 15 times what the Institute of Medicine (IOM) recommends.
Current Recommendations Are Inadequate Due to Flawed Math 1.Did they select the appropriate number as an indication of adequacy? The IOM chose 20 nanograms per milliliter (ng/ml) of serum concentration of 25-hydroxy vitamin D as an adequate level, but many vitamin D researchers believe that's too low 2.To maintain a level of 20 ng/ml, the IOM says you need to take 600 IUs a day up to age 70, and 800 IUs if you're over 70 "The recommended dietary allowance, as I think most of us know, is the intake that is reckoned to be necessary to meet the nutritional need of 97.5 percent of the population... How…
