5 Things That Increase Your Risk of Vitamin D Deficiency
If you meet any of these criteria, chances are you're not getting enough D.
You rely on a multi for your daily dose of D.
The daily value for vitamin D was set back in 1997, and many experts believe it's woefully inadequate. For example, studies found that taking 400 IU (the amount in most multis) did almost nothing to lessen the risk of bone fractures in older women. But taking 700 to 800 IU considerably reduced fractures.