High blood pressure in childhood has been directly linked to an increased risk of dying from cardiovascular disease by midlife, according to a large-scale U.S. study presented at the American Heart Association’s Hypertension Scientific Sessions 2025 in Baltimore. The findings, published in the Journal of the American Medical Association, highlight a strong association between early-life blood pressure levels and long-term health outcomes, reinforcing the importance of early detection and management.
The study examined data from more than 38,000 children enrolled in the National Collaborative Perinatal Project between 1959 and 1965. Participants were recruited from 12 sites across the United States and had their blood pressure measured at the age of seven. These measurements were standardized using modern guidelines from the American Academy of Pediatrics, which adjust for age, sex and height to define elevated readings and hypertension in children.
Researchers linked these early-life data to mortality records in the National Death Index, tracking outcomes through 2016. By that time, participants had reached a mean age of 54. Among the 38,252 individuals included in the analysis, 2,837 deaths had occurred. Of these, 504 were attributed to cardiovascular causes such as heart attacks and strokes. The results showed a statistically significant increase in risk among those with higher childhood blood pressure.
Children with readings in the elevated range between the 90th and 94th percentile had a 39 percent greater risk of premature death from cardiovascular disease. Those with blood pressure at or above the 95th percentile, categorized as hypertensive, faced a 56 percent higher risk compared to children with lower readings.
Researchers track long-term impact of early blood pressure
Even within the so-called normal range, modest increases in blood pressure carried implications. A 10 mmHg rise in systolic blood pressure at age seven was associated with a 13 percent increase in the risk of cardiovascular death. A similar 10 mmHg rise in diastolic pressure corresponded to an 18 percent increased risk.
To control for environmental and genetic factors, the researchers conducted a sibling comparison within the cohort. In 150 sibling groups, the child with the higher blood pressure at age seven was more likely to die from cardiovascular disease in adulthood than their sibling with lower readings. This within-family analysis supported the broader findings and reduced the likelihood that the associations were due to shared family background alone.
While the study’s cohort primarily included Black and white participants born in the mid-20th century, researchers noted the results remain relevant to contemporary pediatric care due to the standardized adjustment of blood pressure data. The study’s reliance on a single blood pressure reading at age seven was acknowledged as a limitation, though the strength and consistency of the findings underscore the long-term health implications.
Diet, exercise, and sleep linked to cardiovascular health
Public health experts emphasize the significance of these findings for early intervention strategies. Regular screening of blood pressure during childhood, especially in routine pediatric care, could play a critical role in identifying at-risk individuals long before symptoms of cardiovascular disease emerge.
Recommended preventive measures include healthy eating habits, adequate physical activity, and lifestyle modifications that reduce sodium intake, improve sleep quality and lower stress. This study adds to a growing body of evidence suggesting that cardiovascular disease can originate decades before clinical symptoms appear, reinforcing the importance of pediatric monitoring as a tool for long-term disease prevention. – By Content Syndication Services.