Some 6,0000,000 Americans Affected.

• Position: COGNITIVE IMPAIRMENT - Brief article

Using new methodology, scientists calculate that approximately 6,000,000 U.S. adults have Alzheimer's disease or mild cognitive impairment, which sometimes can be a precursor to the disease. The National Institute on Aging estimate, published in Alzheimer's & Dementia: The Journal of the Alzheimer's Association, also forecasts that these numbers will continue to grow, reaching 15,000,000 by 2060 as the population ages.

This new forecast differs from earlier estimates. For the first time, scientists have attempted to account for numbers of people with biomarkers or other evidence of possible...