The adult brain of humans and other mammals continuously generates new neurons throughout life. However,
this neurogenic capacity is limited to two brain areas, the dentate gyrus (DG) of the hippocampus and the subventricular
zone (SVZ) of the lateral ventricle. Although the DG generates new neurons, its neurogenic capacity declines with age
and neurodegenerative diseases such as Alzheimer’s disease (AD) and Huntington’s disease (HD). This review focuses on
the role of newly-born neurons in cognitive processes, and discusses some of the strategies proposed in humans and animals
to enhance neurogenesis and counteract age-related cognitive deficits, such as physical exercise and intake of natural
products like omega-3 fatty acids, curcumin and flavanols.
Keywords: Adult neurogenesis, Aging, Alzheimer’s disease, Curcumin, Exercise, Flavanols, Hippocampus, Huntington’s disease,
Omega-3 fatty acids.
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