Health and Aging

A-Z Health Topics Index

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  24. X
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  26. Z


  • Alzheimer's Disease Fact Sheet
    Explore the changes in the brain that cause Alzheimer’s, symptoms, disease stages, diagnosis, and treatment. Also includes advice for caregivers and a list of other resources.
  • Alzheimer's Disease Genetics Fact Sheet
    Learn about the role of genetics in Alzheimer's disease and what types of Alzheimer’s might be inherited, as well as genetic testing and current research.
  • Biology of Aging
    Learn from NIA’s research on the basic biology of aging. Read about the relationship between aging and genetics, metabolism, and the immune system, as well as directions for future study.