Prevalence of heart disease
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Global Prevalence of Heart Disease
Heart disease remains a major health concern worldwide, with significant variation in prevalence depending on the type of heart disease, age group, and region. Ischemic heart disease (IHD), heart failure, congenital heart defects, and other cardiovascular diseases (CVDs) all contribute to the global burden.
Ischemic Heart Disease (IHD) Prevalence
In 2019, there were approximately 197.2 million prevalent cases of IHD globally. While the absolute number of cases remains high, the global age-standardized prevalence rate of IHD decreased by 4.6% from 1990 to 2019. Males had higher prevalence and death rates across all age groups, and the burden was greater in countries with lower socio-demographic indices. Major risk factors include high blood pressure, high LDL cholesterol, and smoking, which together account for a large proportion of IHD-related disability and death .
Coronary Heart Disease Trends in the United States
Between 2001 and 2012, the prevalence of coronary heart disease (which includes myocardial infarction and angina) in U.S. adults aged 40 and older decreased from 10.3% to 8.0%. The decline was observed across several demographic groups, including women, older adults, and those with health insurance. However, the prevalence did not change among individuals with established risk factors, highlighting the need for targeted prevention .
Heart Failure Prevalence
Heart failure affects 1–2% of the adult population in contemporary multinational studies, with prevalence rising sharply among older adults. In the U.S., prevalence among Medicare beneficiaries aged 65 and older reached as high as 17.7%. One-year case fatality rates for heart failure are high, averaging 24–33% across studies, underscoring the seriousness of the condition Emmons-Bell2022Norhammar2023.
Cardiovascular Disease in Youths and Young Adults
Among individuals aged 15–39 years, the global age-standardized prevalence of CVDs increased from 1,477.54 to 1,645.32 per 100,000 population between 1990 and 2019. Although disability and mortality rates decreased, the overall prevalence rose, particularly for rheumatic heart disease and ischemic heart disease. The burden is higher in countries with lower socio-demographic indices, and women in this age group have a higher prevalence rate than men .
Congenital Heart Disease Prevalence
The global birth prevalence of congenital heart defects (CHD) increased over recent decades, reaching 9.41 per 1,000 live births in 2010–2017. This rise is largely due to improved detection of mild lesions, while severe defects have become less common, likely due to better prenatal screening. There is significant regional variation, with Africa reporting the lowest and Asia the highest prevalence rates .
Regional and Country-Specific Prevalence
- India: Among adults aged 45 and older, self-reported heart disease prevalence was 4.16% in men and 3.55% in women, while symptom-based angina was higher, especially in women (7.02%). Undiagnosed and uncontrolled heart disease remains a significant concern .
- Somaliland: The prevalence of heart disease was 0.7%, with higher rates among older adults, women, rural residents, and those with risk factors like tobacco use, diabetes, and hypertension .
- Brazil (Elderly): The prevalence of CVD among the elderly increased from 17.9% in 2000 to 22.9% in 2010, with higher rates associated with older age, smoking, diabetes, and hypertension .
Prevalence of CVD Risk Factors
Despite some improvements, millions of people globally continue to have risk factors for CVD, such as high blood pressure, high cholesterol, tobacco use, and physical inactivity. These risk factors remain prevalent across all age groups and regions, contributing to the ongoing burden of heart disease .
Conclusion
Heart disease remains highly prevalent worldwide, with significant differences by age, sex, region, and socioeconomic status. While some types of heart disease show declining age-standardized rates, the absolute number of cases remains high, and certain populations continue to experience rising prevalence. Addressing modifiable risk factors and improving detection and management are essential to reducing the global burden of heart disease.
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