Research
Mixed
Aging is associated with a decline in adaptive immunity and a concurrent up-regulation of innate immunity, resulting in chronic inflammation.
As you age, your immune system changes: specific defenses weaken while general inflammation increases. This chronic inflammation is a key driver of age-related decline, suggesting that simply 'boosting' immunity without addressing inflammation may be counterproductive.
GoodSupportsHIGH confidence
Functional analyses of changes in the immune response indicate that aging is associated with a decline of adaptive immunity whereas innate immunity is ramped up.
Why this rating
Based on a review of multiple studies across species (mice, humans, invertebrates), though functional outcomes vary.
Source
Immunity and aging: the enemy within?
Brian DeVeale et al. · Aging Cell · 2004
DOI 10.1111/j.1474-9728.2004.00106.x
narrative_reviewCited 172×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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