Lower pressure, protected hearts: 88,830 patients settle a long argument

Doctors have long debated how low blood pressure should go: lower protects the heart, but might it strain the kidneys? A review in JAMA Cardiology by Fotini Iatridi and colleagues combined 27 trials with 88,830 adults and found a clear pattern. For every 10-point (10 mmHg) reduction in systolic pressure — the top number in a reading — stronger treatment cut major heart and circulation events by 15%. The benefit held for people with and without kidney disease, and because kidney patients start at higher risk, their real-world gain was larger: about 4.3 fewer events per 1,000 people per year, versus 2.7. And the feared harm did not clearly appear: kidney failure — needing dialysis or a transplant — did not increase, even though some kidney blood-test readings dipped more often, which the authors note is not the same thing as kidneys failing. Treatment still needs monitoring, but the evidence now leans firmly toward protection.

SDG 3 · Good health and well-being