Framingham Heart Study

The Framingham Heart Study is a long-term, ongoing cardiovascular cohort study on residents of the town of Framingham, Massachusetts. The study began in 1948 with 5,209 adult subjects from Framingham, and is now on its third generation of participants. Prior to it almost nothing was known about the "epidemiology of hypertensive or arteriosclerotic cardiovascular disease". Much of the now-common knowledge concerning heart disease, such as the effects of diet, exercise, and common medications such as aspirin, is based on this longitudinal study. It is a project of the National Heart, Lung, and Blood Institute, in collaboration with (since 1971) Boston University. Various health professionals from the hospitals and universities of Greater Boston staff the project.

Thomas Royle Dawber was Director of the study from 1949 to 1966. He was appointed as chief epidemiologist shortly after the start of the project, when it was not progressing well. The study had been intended to last 20 years, but at that time Dawber moved to Boston and became chairman of preventive medicine, raising funds to continue the project and taking it with him.

By 1968, a fight was underway to keep the Framingham Study going in an era marked by protests, assassinations, the struggle for civil rights, and controversy surrounding America's military involvement with the Vietnam War. A committee gathered and considered that, after 20 years of research, the Framingham study should come to an end, since their hypothesis had been tested and extensive information concerning heart diseases had been gathered. Despite this conclusion, the study continued, and in 1971, it enrolled a second generation of participants. In 1994, a more diverse sampling of Framingham residents was enrolled as the "Omni cohort." In April 2002, a third generation was enrolled in the core study, and a second generation of Omni participants was enrolled in the following year.

Over 1000 medical papers have been published related to the Framingham Heart Study. It is generally accepted that the work is outstanding in its scope and duration, and overall is considered very useful. The initial population was 5,209 healthy men and women aged 30 to 62, not the whole of the town population, as is sometimes assumed.

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