Hypertension common among poorest, least educated around the world | 高血壓在世界上最貧窮、受教育程度最低的人群中很常見

News Release

Hypertension common among poorest, least educated around the world

Estimated to be the leading cause of death, more interventions are needed to lower blood pressure in low/middle-income countries

Peer-Reviewed Publication

American College of Cardiology

Hypertension is a prevalent condition among the least educated and poorest people in low- and middle-income countries (LMICs), despite often presumed low rates of common risk factors like sedentary lifestyle and obesity, according to a study published today in the Journal of the American College of Cardiology. However, investment in interventions toward reducing hypertension rates and risk in these regions is lacking compared to other global health issues like HIV, tuberculosis and malaria.

Hypertension is a highly prevalent but modifiable risk factor for cardiovascular disease. It is also estimated to be the leading cause of death in LMICs; however, hypertension is often thought to affect mainly wealthier individuals in those countries. Researchers in this study looked at hypertension rates across levels of socioeconomic status to determine the association of educational attainment and household wealth with hypertension; whether and how the relationship between socioeconomic status and hypertension differs between regions; and how socioeconomic gradients of hypertension within countries are associated with level of economic development.

“Achieving equity in health requires an understanding of which health conditions are most prevalent among the most socioeconomically disadvantaged segments of society,” said Pascal Geldsetzer, ScD, senior author of the study and assistant professor of medicine in the Division of Primary Care and Population Health at Stanford University in Stanford, California. “This is especially important for hypertension because those with low socioeconomic status are generally least able to access high-quality health care for strokes and heart attacks and are typically most dependent on their full health to earn a living.”

Researchers looked at more than 1.2 million people in 76 LMICs, which were categorized into six regions according to the World Health Organization’s regional groupings: Africa, Eastern Mediterranean, Europe, the Americas, Southeast Asia and the Western Pacific. The median age was 40 years old and 58.5% were female.

They found that the differences in hypertension prevalence between groups divided according to education level and household wealth were small in most countries. Findings that researchers said may be “counterintuitive” because the poorest people in LMICs are often assumed to engage in large amounts of physical activity through manual labor and not be overweight or obese. However, other risk factors like aging and pollution, might be a cause of high hypertension rates. There were some variations in findings, including in Southeast Asia where there was a greater prevalence of hypertension in more educated and wealthier people and in countries with lower gross domestic product versus higher gross domestic product, but absolute differences were still small.

“Policymakers who are concerned with improving health among the most disadvantaged groups may want to invest in improving hypertension prevention and control among these groups,” Geldsetzer said. “This appears particularly justified given that we have found in previous research that adults with the least education and household wealth are least likely to be on treatment for their hypertension and ultimately achieve control of their blood pressure.”

In a related editorial comment, Yashashwi Pokharel, MBBS, MSCR, assistant professor of cardiology and an affiliate in the Office of Global Health at Wake Forest School of Medicine in Winston-Salem, North Carolina, said the global hypertension burden is “dismal,” and there has been little data on the differences in hypertension prevalence by socioeconomic status.

“Now that we know that hypertension prevalence is not different in the poorest, the least educated or the least economically developed country as compared with their wealthier and educated counterparts, we should develop, test and implement effective strategies to enhance global equity in hypertension care,” Pokharel said.

The American College of Cardiology envisions a world where innovation and knowledge optimize cardiovascular care and outcomes. As the professional home for the entire cardiovascular care team, the mission of the College and its more than 56,000 members is to transform cardiovascular care and to improve heart health. The ACC bestows credentials upon cardiovascular professionals who meet stringent qualifications and leads in the formation of health policy, standards and guidelines. The College also provides professional medical education, disseminates cardiovascular research through its world-renowned JACC Journals, operates national registries to measure and improve care, and offers cardiovascular accreditation to hospitals and institutions. For more, visit acc.org.

The ACC’s family of JACC Journals rank among the top cardiovascular journals in the world for scientific impact. The flagship journal, the Journal of the American College of Cardiology (JACC) — and family of specialty journals consisting of JACC: Advances, JACC: Asia, JACC: Basic to Translational Science, JACC: CardioOncology, JACC: Cardiovascular Imaging, JACC: Cardiovascular Interventions, JACC: Case Reports, JACC: Clinical Electrophysiology and JACC: Heart Failure — pride themselves on publishing the top peer-reviewed research on all aspects of cardiovascular disease. Learn more at JACC.org.

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