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Is Hypertension More Common Than We Think?
Published: May 30, 2024
Hypertension, or high blood pressure, is a condition affecting millions worldwide, but recent changes in how it's defined have increased its prevalence. Discover how these definitions impact statistics and why it matters to you.
Changing Definitions
In 2017, the American College of Cardiology and American Heart Association redefined hypertension, lowering the threshold for diagnosis. This change meant that more people are now classified as having high blood pressure. Previously, hypertension was defined as having a systolic pressure of 140 mmHg or more, or a diastolic pressure of 90 mmHg or more. The new definition includes anyone with a systolic pressure of 130 mmHg or higher, or a diastolic pressure of 80 mmHg or higher.
Hypertension in the U.S.
In the United States, the prevalence of hypertension has jumped to about 45 percent for adults under the new guidelines. Previously, it was around 30 percent. Certain groups, such as older adults, Black adults, and those with obesity, are more likely to be affected. Despite the changes, hypertension remains a major health concern requiring effective management and control.
Global Impact
The change in definition has a global impact, with countries experiencing increased prevalence rates. For instance, Canada would see rates rise from 32 to 46 percent, while China's could increase from 25 to 50 percent. Different countries may adopt different guidelines, but the global burden of hypertension is expected to rise significantly.
Frequently Asked Questions
Hypertension is high blood pressure, a condition where the force of blood against artery walls is too high.
The threshold for diagnosis has been lowered from 140/90 mmHg to 130/80 mmHg.
Older adults, Black adults, and those with obesity are most affected.
Under the new definition, about 45 percent of U.S. adults have hypertension.
The Bigger Picture
With evolving definitions, the challenge of managing hypertension continues to grow globally.
References
- Whelton PK, Carey RM, Aronow WS, et al. Hypertension 2018; 71:e13.
- Muntner P, Carey RM, Gidding S, et al. Circulation 2018; 137:109.
- Centers for Disease Control and Prevention (CDC). MMWR Morb Mortal Wkly Rep 2011; 60:103.
- Kearney PM, Whelton M, Reynolds K, et al. Lancet 2005; 365:217.
This article has been reviewed for accuracy by one of the licensed medical doctors working for Doctronic. Always discuss health information with your healthcare provider.
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