December 1998 Issue
Too Much Vitamin A Sets Stage for Osteoporosis
A mere doubling of the recommended intake for vitamin A may dramatically increase a woman's risk for osteoporosis, says a new study. Researchers from Sweden, where both vitamin A intake and the incidence of fractures from osteoporosis are unusually high, studied 422 women between the ages of 28 and 76. They found that for every one milligram increase in dietary retinol (equivalent to 3,333 International Units of preformed vitamin A), the risk of hip fracture
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