Low Estrogen Levels in Men Linked to Increased Risk for Hip Fracture

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2006-05-07 21:57

Men and estrogen level

A new study has found that men with low estrogen levels have an increased risk for future hip fracture, and those with both low estrogen and low testosterone levels have the greatest risk.

The study, to be published in the May issue of The American Journal of Medicine, was conducted by Shreyasee Amin, M.D., Mayo Clinic rheumatologist, and colleagues studying men from the National Heart, Lung and Blood Institute's Framingham Heart Study (http://www.framingham.com/heart) prior to her career at Mayo Clinic.

The study examined 793 men who had their estrogen and testosterone levels measured between 1981 and 1983 and no record of prior hip fracture. They were followed until 1999. The men were categorized as having low, midrange or high levels of each hormone. The researchers also recorded hip fractures not associated with high trauma occurring since the study start. During the study, 39 men experienced a low trauma hip fracture (for example, incurred due to a fall from a standing height or less). Those with low estrogen levels (total estradiol levels below 18 picograms per milliliter) had 3.1 times the risk of hip fracture compared to men with high estrogen levels. There was no significant increase in hip fracture risk for men with low testosterone levels alone. However, men with both low estrogen and low testosterone levels had the greatest risk, with 6.5 times the risk of hip fracture compared to the men who had both estrogen and testosterone levels in the high range or midrange.

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