Intensifying efforts to lower high blood pressure can significantly reduce the risk of heart attack, stroke, and related deaths, according to a new large-scale study published in The Lancet medical journal.
Hypertension, or high blood pressure, is one of the most common chronic health conditions globally, affecting an estimated 1.28 billion adults aged 30 to 79. If untreated, it can lead to serious complications including heart disease, stroke, and kidney failure. Standard treatment typically involves medication and lifestyle changes to lower systolic blood pressure—the top number in a reading—to around 140 millimetres of mercury (mmHg).
The new research suggests that lowering blood pressure even further, to below 120 or 130 mmHg, may deliver greater cardiovascular benefits. The study, led by a Chinese research team, analysed data from around 80,000 people across six clinical trials conducted in China, Canada, and the United States. Participants underwent varying treatment strategies, combining medication with lifestyle adjustments such as regular exercise, weight management, smoking cessation, and dietary improvements.
The analysis found that participants receiving intensive blood pressure control were less likely to suffer heart attacks, strokes, or cardiovascular-related deaths compared with those who followed standard treatment targets. “Our findings indicate a net benefit to intensive blood pressure management,” the authors noted, calling it the most comprehensive review to date of the approach’s health effects.
However, the study also highlighted potential drawbacks. Those in the intensive treatment group experienced higher rates of side effects, including dizziness, fainting, kidney issues, and irregular heart rhythms. These risks have fueled ongoing debate within the medical community about how aggressively to pursue lower blood pressure goals, particularly among older adults who may be more vulnerable to falls and complications.
The researchers stressed the importance of tailoring treatment to each patient. “The results underscore the need for individualised strategies to optimise outcomes while avoiding both overtreatment and undertreatment,” the study concluded.
Medical experts say the findings could influence future guidelines for hypertension management, as healthcare providers weigh the benefits of stricter control against the risks of side effects. With nearly half of global adults unaware they have high blood pressure, and only a fraction receiving effective treatment, the study reinforces the urgency of early diagnosis and careful monitoring.
As the debate continues, doctors are being urged to balance aggressive blood pressure control with patient safety, taking into account age, overall health, and individual risk factors.
