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May 16, 2001

Incidence of Dementia and Alzheimer Disease in Nigeria and the United States

Author Affiliations

Copyright 2001 American Medical Association. All Rights Reserved. Applicable FARS/DFARS Restrictions Apply to Government Use.2001

JAMA. 2001;285(19):2448-2449. doi:10.1001/jama.285.19.2448

To the Editor: Dr Hendrie and colleagues1 suggest that the lower incidence of dementia and Alzheimer disease in Nigeria compared with African Americans in Indianapolis could be due to dietary factors. Farrer2 has suggested that environmental factors, such as diet and exercise, may mediate this relationship. While not ruling out involvement of diet and exercise, there is reason to believe that another factor is also important, namely differing levels of exposure to data input, especially from television.