07/10/2025
🚨 Beta Blockers After Heart Attack? New Evidence Says Think Again.
For decades, beta blockers have been prescribed almost automatically to people recovering from a heart attack — a practice once thought to be life-saving. But a landmark clinical trial is now challenging that long-standing belief.
The REBOOT trial, conducted across Spain and Italy and published in the New England Journal of Medicine, followed more than 8,500 heart attack survivors with normal heart function. Half received beta blockers, half did not. After nearly four years of follow-up, researchers found no difference between the groups in overall survival, repeat heart attacks, or hospitalizations for heart failure.
Even more striking, the data hinted at a troubling pattern among female patients — those with normal heart function who took beta blockers actually faced worse outcomes, including higher rates of death and repeat heart attacks.
Experts believe the findings reflect how cardiology has evolved: decades ago, beta blockers were crucial when treatments were limited. Today, with advanced stents, statins, and targeted therapies, their benefit for patients with preserved heart function may have vanished — or even turned harmful for some.
This is the largest study of its kind, and it may reshape global post-heart-attack treatment guidelines. For patients and doctors alike, it’s a reminder that even well-established medical habits must evolve as evidence does.
Source: “Beta-Blockers after Myocardial Infarction without Reduced Ejection Fraction,” New England Journal of Medicine, August 29, 2025.
