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Did You Know?

Vitamin D Levels in Men See Decline

April 2009

Men may not be getting as much vitamin D as they did in the past, according to a study published in the American Journal of Clinical Nutrition. Apparently, men are drinking less milk and taking more steps to protect themselves from the sun than they did in the late 1980s and early 1990s. Study author Anne C. Looker, Ph.D., of the National Center of Health Statistics noted that men's vitamin D levels have declined between 7% and 12% over the past 15 to 20 years. She attributes most of the decline to changes in the body mass index, decreases in milk intake and increases in sun protection. Looker and fellow researchers used data from National Health and Nutrition Examination Surveys to compare serum vitamin D levels in 18,000 participants in 1988–1994 with those of 21,000 in 2000–2004. Looker noted that "values in women were not significantly different between surveys."

American Journal of Clinical Nutrition 88(6):1519-1527, 2008

†Ratings based on results of the 2012 ConsumerLab.com Vitamin and Supplement Users Survey. More information at www.consumerlab.com.

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