What are the signs and causes of cognitive impairment?

Mild cognitive impairment (MCI) refers to a measurable decline in at least one cognitive area—most often memory—that goes beyond the effects of normal aging. People with MCI are able to perform normal daily activities, such as eating, dressing, and bathing, as well as most complex activities, such as driving, cooking, cleaning, and managing finances.  The main risk factors for MCI include head trauma, smoking, high blood pressure, high cholesterol and diabetes.