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Part II Framingham Study: Research Milestones in Heart Disease and Atrial Fibrillation

Now celebrating its 70th year, the Framingham Heart Study (FHS) is a long-term, ongoing cardiovascular study of residents of the city of Framingham, MA, a small, middle-class community 23 miles west of Boston.

Starting in 1948, the objective of the Framingham Heart Study was to identify the common factors that contribute to cardiovascular disease by following its development over a long period of time. Participants would have no overt symptoms of heart disease and not suffered a heart attack or stroke. Today 15,447 people of varying ages, backgrounds and heritage are enrolled including second and third generations.

Findings Integral to Scientific Understanding A-Fib

The Framingham study has contributed greatly to our understanding of Atrial Fibrillation and to the risk of stroke, heart attack and heart failure. A few important milestones about A-Fib include:

1957    High blood pressure and high cholesterol levels increase likelihood of heart disease

1960    Cigarette smoking found to increase the risk of heart disease

1970    Atrial fibrillation increases stroke risk 5-fold

1982    Chronic atrial fibrillation associated with a doubling of overall mortality and of mortality from cardiovascular disease

1991    Atrial fibrillation as an independent risk factor for stroke

1994    Diabetes and hypertension risk factors for atrial fibrillation

2002    Obesity is a risk factor for heart failure

2009    New genetic variant associated with increased risk for atrial fibrillation

2010    Sleep apnea tied to increased risk of stroke

2010    Having first-degree relative with atrial fibrillation associated with increased risk

Framingham Research: Expect More Findings About Atrial Fibrillation

Framingham scientists circa 1948

Framingham data resources are available for researchers to use, and those data continue to spur new scientific discoveries. The study data has spawned over 3,600 published studies in medical, peer-reviewed journals.

As A-Fib patients, we owe a huge debt to the Framingham participants, doctors, scientists and researchers. With continuation of the Framingham Heart Study, we can expect more research findings about Atrial Fibrillation for years to come.

Resources for this article

• The Framingham Heart Study. Research Milestones. Accessed Oct. 22, 2018. https://www.framinghamheartstudy.org/fhs-about/research-milestones/

• Kannel, WB, et al. Epidemiologic Features of Chronic Atrial Fibrillation — The Framingham Study; N Engl J Med 1982; 306:1018-1022. DOI: 10.1056/NEJM198204293061703

• Wolf PA, et al. Atrial fibrillation as an independent risk factor for stroke: the Framingham Study.  Stroke.1991;22:983-988.

• Benjamin, EJ, et al. Independent Risk Factors for Atrial Fibrillation in a Population-Based Cohort; The Framingham Heart Study. JAMA. 1994;271(11):840-844. doi:10.1001/jama.1994.03510350050036

• Stewart, S. et al. A population-based study of the long-term risks associated with atrial fibrillation: 20-year follow-up of the Renfrew/Paisley study. The American Journal of Medicine, Volume 113, Issue 5, 1 October 2002, Pages 359-364. https://doi.org/10.1016/S0002-9343(02)01236-6

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