Blood Pressure Balance: When Lower Isn’t Always Better and What Science Says About Optimal Levels for Heart Health

New research suggests that targeting a lower blood pressure may deliver greater heart health benefits than previously thought, but experts caution that such an approach is not suitable for everyone. A simulation study published in Annals of Internal Medicine found that keeping systolic blood pressure below 120 mm Hg could reduce the risk of heart attack, stroke, and heart failure more effectively than higher targets, based on data from major trials including SPRINT, and NHANES.

The study, conducted by researchers at Mass General Brigham, analyzed lifetime health outcomes for patients with systolic blood pressure targets of below 120 mm Hg, below 130 mm Hg, and below 140 mm Hg. Their model incorporated both the benefits of preventing cardiovascular events and the potential harms of medication side effects. Results indicated that the advantages of more intensive blood pressure control may outweigh concerns about overtreating patients with hypertension.

Supporting evidence from a large meta-analysis published in Cardiovascular Journal of Africa shows that even a 5-mmHg reduction in systolic blood pressure lowers the risk of major cardiovascular events by about 10%, regardless of whether a person has pre-existing heart disease or normal blood pressure levels. The analysis included data from 48 randomized antihypertensive treatment trials involving over 344,000 participants, reinforcing that pharmacological blood pressure lowering can serve as a tool for cardiovascular risk management even in individuals with normal or mildly elevated readings.

Further research from the National Heart, Lung, and Blood Institute highlights that lower normal blood pressure levels correlate with reduced long-term cardiovascular risks. In a study of healthy adults with systolic blood pressure between 90 and 129 mm Hg, researchers found that those in the 90–99 mm Hg range had significantly fewer cardiovascular events over 10 years compared to those with higher normal readings. After adjusting for age, only 1.3 per 1,000 individuals in the lowest range experienced a heart attack or stroke, versus 8.3 per 1,000 in the 120–129 mm Hg group.

Despite these findings, medical professionals emphasize that blood pressure management must be individualized. A cardiologist quoted in recent reporting warned that while lower blood pressure is generally beneficial for heart health, it is not appropriate for all patients. Factors such as age, overall health, and potential medication side effects must be carefully considered when determining treatment goals.

Current guidelines from the American Heart Association and the American College of Cardiology define stage one hypertension at 130 mm Hg, a threshold lowered from 160 mm Hg in previous decades. However, ongoing research continues to explore whether even lower targets — such as below 120 mm Hg — may offer additional protection against heart disease, particularly for those at elevated risk.

Experts stress that lifestyle modifications remain foundational to blood pressure management. Recommendations include maintaining a healthful diet, engaging in regular physical activity, and routinely monitoring blood pressure, cholesterol, and blood sugar levels. Any decision to pursue aggressive blood pressure lowering through medication should be made in consultation with a healthcare provider, weighing individual benefits against potential risks.