Scientists at Mass General Brigham looked at how aggressively we should lower blood pressure. Their new study says that pushing the number down further can bring big health rewards.
The team used data from big research projects such as the SPRINT trial and the NHANES survey. They built a computer model to see what would happen over a lifetime if people tried to keep their systolic pressure below 120, 130, or 140 mm Hg.
Because blood‑pressure pills sometimes cause problems, the researchers also added the chance of side effects into the model. They wanted to weigh the good (fewer heart attacks, strokes, and heart‑failure cases) against the bad (falls, kidney injury, low blood pressure, and slow heart rate).
Real‑world measurement mistakes
In everyday clinics, blood‑pressure readings are not always perfect. The model included these common mistakes so the results match real life.
What the model showed
Even with measurement errors, aiming for a reading under 120 mm Hg stopped more heart attacks, strokes, and heart‑failure events than the 130 mm Hg goal.
However, a tighter target also raised the chance of medication‑related problems like falls, kidney damage, very low pressure, and slow heartbeats. It also meant more doctor visits and higher drug costs.
Is it worth the extra cost?
Despite the extra risks and money, the study found the <120 mm Hg goal still gave good value. It cost about $42,000 for each quality‑adjusted life year gained, a figure health economists often use.
What doctors say
One expert warned that these numbers apply to whole populations, not every single patient. He said, “Doctors and patients should talk together to pick the right amount of medicine based on personal preferences and health status.”
Funding
The research was supported by the National Science Foundation and the National Institute of Neurological Disorders and Stroke.