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Moderate Alcohol Consumption Reduces Osteoporosis Risk

by VR Sreeraman on August 3, 2012 at 2:20 PM
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 Moderate Alcohol Consumption Reduces Osteoporosis Risk

Intake of alcohol in moderation may reduce the risk of developing osteoporosis risk in postmenopausal women, finds a new study.

Osteoporosis may lead to fractures (especially hip fractures) from falling.

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The weakness of the bones results from an imbalance between the normal resorption (a type of dissolving of old bone) and the laying down of new bone, an ongoing process for both men and women referred to as "bone turnover."

For poorly understood reasons, after menopause the resorption of old bone in women continues but new bone is laid down less well, leading to a decrease in bone density.
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A variety of substances (calcium, vitamin D and various medications) have been used in an attempt to prevent the development of osteoporosis; in epidemiologic studies, moderate drinking of alcohol has also been shown to lower this risk.

An intervention by Marrone JA et al involved 40 healthy postmenopausal women of an average age of 56.

The researchers measured factors that relate to osteoporosis in post-menopausal women while subjects were consuming alcohol (19g a day), after they had stopped drinking, and after they had resumed their alcohol consumption.

They stated that excessive bone turnover, combined with an imbalance whereby bone resorption exceeds bone formation, is the principal cause of post-menopausal bone loss and concluded that alcohol decreases the turnover of bone in post-menopausal women, which leads to less resorption of bone, hence less osteoporosis.

The study also showed that abstinence from alcohol resulted in increased markers of bone turnover (hence, higher risk of developing osteoporosis), whereas resumption of alcohol consumption reduced bone turnover markers.

The researchers attribute a cellular mechanism for the observed lower risk of osteoporosis among women who consume moderate amounts of alcohol.

On the other hand, many prospective epidemiologic studies in the elderly have shown greater bone mineral density and a lower risk of fractures among regular moderate drinkers than among abstainers.

The most important aspect of this study may be that it has helped identify cellular mechanisms for the increased bone density observed in post-menopausal women who are moderate alcohol consumers.

The new study has been published in Menopause.

Source: ANI
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