Immune system responses identified as potential drivers of rapid aging

New research indicates that the body's immune response to persistent infections and damaged DNA may be a primary driver of degenerative aging and rapid-aging genetic disorders.

Studies suggest that asymptomatic persistent infections, such as cytomegalovirus and other herpesviruses, can accelerate aging by causing chronic inflammation and premature immunosenescence. While these microbes can provide evolutionary advantages like enhanced immune readiness, they also impose a continuous burden of immune activation.

Additionally, an international research team led by Hebrew University and the University of Southern California has identified an immune ‘false alarm’ linked to rapid aging. In rare DNA damage-repair syndromes like Ataxia-Telangiectasia and Bloom syndrome, the immune system mistakenly treats fragments of the body's own damaged DNA as invading viruses. This triggers an exaggerated, chronic inflammatory reaction that drives tissue degeneration. Researchers found that reducing this misplaced immune response improved tissue health across multiple biological systems, suggesting that the inflammatory reaction, rather than the DNA damage itself, is a major factor in cellular decline.