Statins are drugs increasingly prescribed to middle-aged people to reduce their cholesterol and blood pressure. Some research has suggested that statins could also reduce the incidence of Alzheimer's as high blood pressure and high cholesterol are linked to this condition. The Cochrane Database of Systematic Reviews looked at two major studies of the statin drugs simvastatin and pravastatin which compared them to placebos and which included 26,340 participants. Sadly, they concluded that statins had no significant effects on people's cognition and no effect in preventing Alzheimer's disease or dementia.
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