Blood pressure drugs feeding the obesity epidemic?

(Reuters) — Blood pressure drugs known as beta-blockers could be helping to fuel the obesity epidemic, by dampening the body’s ability to burn calories and fat over the long term, researchers say in a new report.

Weight gain is a known side effect of beta blockers, particularly older ones such as atenolol (Tenormin) and metoprolol (Lopressor, Toprol-XL). Newer versions, like carvedilol (Coreg), appear to carry less risk of added pounds.

Beta-blockers are not the only medications that promote weight gain. Antidepressants, corticosteroids and some diabetes medications are among the other culprits.

But with the growing problem of obesity worldwide, researchers are starting to look into the role that medications could be playing — along with the usual suspects of poor diet and sedentary lifestyle.

In the new study, Australian researchers found that among more than 11,400 adults with high blood pressure and/or diabetes, those on beta-blockers weighed more, on average, and had larger waistlines.

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