Does Cycling actually make a difference, or is it overhyped?

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. Weighing the data: Cycling looks an early-stage, lower-priority area for now — the evidence is only moderate (55/100), and its estimated impact (50/100) is on the lower end too.