These commonly prescribed medications may increase your risk of dementia, study finds

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Medications can increase onset of dimensiaA study out of the University of Nottingham in the United Kingdom found there is a link between dementia and certain classes of anticholinergic drugs.

The drugs — particularly antidepressants, bladder antimuscarinics, antipsychotics and antiepileptic drugs — resulted in nearly "50% increased odds of dementia," according to the observational study published Monday in the peer-reviewed JAMA Internal Medicine journal.

Anticholinergic drugs help contract and relax muscles, according to Mayo Clinic. They can also be used to treat ulcers and prevent nausea. This is done by blocking a neurotransmitter in the brain, acetylcholine, from entering the nervous system.

Doctors prescribe these kinds of drugs to treat a variety of conditions, including chronic obstructive pulmonary disease, bladder conditions, allergies, gastrointestinal disorders and symptoms of Parkinson's disease.

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