Short stature, lung function and risk of a heart attack

Area of Science:

• Cardiovascular Epidemiology
• Pulmonary Medicine

Background:

• Cardiovascular disease remains a leading cause of mortality.
• Factors influencing ischemic heart disease risk are crucial for public health.
• Previous studies have explored various risk factors, but the role of height and lung function requires further clarification.

Purpose of the Study:

• To investigate the association between height and the risk of major ischemic heart disease events in middle-aged men.
• To determine if traditional cardiovascular risk factors and lung function mediate the relationship between height and heart attack risk.

Main Methods:

• Prospective cohort study involving 7735 middle-aged men from the British Regional Heart Study.
• Follow-up period of 7.5 years to identify major ischemic heart disease events.
• Statistical analysis adjusting for age, social class, cholesterol levels, blood pressure, smoking, and lung function (FEV1).

Main Results:

• Men in the shortest quintile of height had approximately twice the risk of heart attack compared to the tallest quintile (p < 0.001).
• This height-related risk was significantly reduced after adjusting for established cardiovascular risk factors.
• The association between height and heart attack risk disappeared entirely when lung function (FEV1) was included in the model, with FEV1 alone accounting for most of the observed association.

Conclusions:

• Height is inversely associated with the risk of ischemic heart disease events in middle-aged men.
• Lung function, specifically FEV1, appears to be a significant mediator of the relationship between height and heart attack risk.
• Pulmonary health may play a more substantial role in cardiovascular risk than previously recognized.