Few interventions in medicine are as well proven — and as underused — as cardiac rehabilitation. A major new evidence review confirms it delivers lasting benefits after heart disease, while a companion review highlights the real scandal: most people who should get it, don’t.
What cardiac rehab is
Cardiac rehabilitation is a structured, supervised program — combining exercise training, education and risk-factor management — for people recovering from a heart attack, bypass surgery, angina or heart failure. It’s a cornerstone of secondary prevention: helping the heart recover and lowering the odds of another event.
The evidence, updated
The new Cochrane review, led by the University of Glasgow, pooled 107 randomized controlled trials involving 26,886 people with coronary heart disease — a large, high-quality evidence base. The results are striking: exercise-based cardiac rehab reduced hospital admissions by about a third and cut the risk of heart attack by more than a quarter (on the order of 28%), with benefits that persisted long term. For a program built largely around supervised exercise, those are the kinds of numbers many drugs would envy.
You don’t necessarily have to go to a center
One of the most practical findings: newer home-based and digitally supported cardiac rehab programs can be just as effective as traditional center-based services. That matters enormously for access — it means distance, transport, work schedules and limited clinic capacity need not be barriers. Rehab delivered by app, phone or at home could reach people who could never attend in person.
The underuse problem
Despite guidelines that routinely recommend cardiac rehab after heart attacks, angina, bypass surgery and for heart failure, only a small proportion of eligible patients actually take part across health systems worldwide. A companion 2026 Cochrane review focuses squarely on this gap — on interventions to boost enrollment, adherence and completion. The reasons for low uptake are well known: patients aren’t referred, programs are inconvenient or full, cost and travel get in the way, and motivation flags during recovery.
Why it matters
The takeaway is almost frustrating in its simplicity: a therapy that reliably prevents heart attacks and hospitalizations is sitting underused, even as flexible new delivery models remove the classic excuses. Closing the gap — through better referral, home-based options and support to finish the program — could prevent a large number of avoidable cardiac events. If you or a loved one has heart disease, cardiac rehab is worth asking about specifically, including home-based options. This summarizes research and is not medical advice.