Study links certain medications to a higher risk of dementia

But some experts say limitations of the study raise questions about the results.

Could one of your regular pills raise your risk of dementia? A study published online June 24 by JAMA Internal Medicine found that people over age 55 who took a daily dose of certain common drugs for approximately three years had a 50% higher risk of developing dementia.

The medicines in question are in a category known as anticholinergics, which are used to treat conditions as diverse as depression, urinary incontinence, allergies, and Parkinson's disease. The study's authors say the findings should prompt doctors to use caution or potentially even avoid prescribing certain medications to people over age 45 on a long-term basis if there are other options available.

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