The Framingham Heart Study enrolled more than 5,000 residents of Framingham, Massachusetts, starting in 1948, and later expanded to include the grandchildren of the original volunteers.
Notes on verification
Confirmed by the official Framingham Heart Study site, Britannica, and a peer-reviewed JACC review, all consistent on enrollment numbers, start date, and multigenerational expansion. [cascade flags: aggregator_dropped_primary_exists | tier=bronze indep_score=0.525 clusters=2 claim_tier=notable] [kind-backfill 2026-09-15: kind=empirical eligibility=high]
Sources
- The Ten Most Disturbing Scientific Discoveries (seed:science_and_space)
- https://www.framinghamheartstudy.org/fhs-about/ (corroboration)
- https://www.jacc.org/doi/10.1016/j.jacc.2021.01.059 (corroboration)