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Medications with anticholinergic activity, which include many drugs taken by older adults, cause cognitive impairment. Over the counter sleeping aids such as Excedrin PM, Nytol, Sominex, Tylenol PM, and Unisom are especially problematic. Other drugs include Paxil, Detol, Demerol, and Elavil. Anticholinergics work by blocking the brain's neurotransmitter,...

  Research from Barcelona on mice with genetic predisposition for Alzheimer's Disease showed that a combination of melatonin and exercise lowered their risk for developing the disease. This combination protected the brain from oxidative stress and from excesses of amyloid and tau proteins. It also improves energy production in the brain, which is...