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Trends in CHD in the United States
1Division of Epidemiology and Clinical Applications, National Heart, Lung and Blood Institute, Bethesda, Maryland 20892.
Insights
Coronary heart disease (CHD) death rates declined significantly since the 1960s due to improved treatments and reduced risk factors. However, CHD remains a leading cause of death, with rising prevalence expected in an aging population.
Area of Science:
- Cardiovascular epidemiology
- Public health
- Internal medicine
Background:
- Coronary heart disease (CHD) mortality rates in the US peaked in the mid-1960s.
- Significant advancements in CHD diagnosis, prevention, and treatment have occurred.
- Risk factor profiles have shifted, with notable changes in lifestyle and medical management.
Purpose of the Study:
- To analyze trends in Coronary Heart Disease (CHD) mortality and morbidity in the United States.
- To identify factors contributing to observed changes in CHD outcomes.
- To project future trends in CHD prevalence.
Main Methods:
- Analysis of historical mortality data for Coronary Heart Disease (CHD).
- Review of trends in risk factors such as smoking, blood pressure, cholesterol, and diet.
- Assessment of changes in medical infrastructure and treatment availability.
Main Results:
- CHD death rates declined significantly after the mid-1960s, with greater reductions in acute myocardial infarction (AMI) and specific demographic groups.
- In-hospital fatality rates decreased, while incidence trends remain uncertain.
- Risk factor modifications, including reduced smoking, controlled hypertension, and dietary shifts, contributed to the decline.
- Obesity prevalence has increased, posing a future challenge.
Conclusions:
- While significant progress has been made in reducing CHD mortality, it remains a leading cause of death.
- An aging population and prolonged survival of CHD patients are expected to increase overall prevalence.
- Continued public health efforts and medical advancements are crucial for managing the future burden of CHD.
Abstract:
Coronary heart disease (CHD) death rates increased in the United States until the mid 1960s then declined. Declines were greater for acute myocardial infarction (AMI), for younger age groups, for the white population, and for higher socioeconomic groups. Trends in incidence are uncertain but in-hospital fatality rates have decreased. There have been major advances in diagnosis, prevention and treatment of CHD, and numbers of internists and cardiologists, emergency medical services, and coronary care units have increased. New potent medical and surgical treatments for acute and chronic CHD have been introduced. Reductions in risk factors include decreases in cigarette smoking especially among men, falls in mean systolic blood pressure, rises in the proportion of hypertensive adults who are treated and controlled, and reductions in plasma cholesterol. Consumption of whole milk, butter, and eggs decreased whereas use of low fat milk, cooking oils, poultry, fish, vegetables, and fruits increased. However, the prevalence of obesity has increased. CHD is still the leading cause of death, and its prevalence is expected to rise as the population increases at older ages and treatment prolongs survival of patients with CHD.