Is Cycling good for longevity?

The evidence points that way, though it's not yet conclusive. Direct evidence specifically on cycling is comparatively limited: a systematic review reports associations between commuter cycling and lower all-cause and cancer mortality, and a long-running Swedish women's cohort found cycling-test fitness in midlife linked to lower dementia risk decades later. That's reflected in an evidence score of 55/100 for its role in longevity, drawn from 4 studies, with an estimated impact on longevity rated moderate (50/100).