Heart Health Secret: How Building Muscle Boosts Lifespan and Wellness

The Overlooked Key to Longevity, Says Heart Surgeon.

According to cardiothoracic surgeon Dr. Jeremy London, strength training isn’t just about looking fit — it’s one of the most powerful strategies for living longer and healthier. In a video posted to Instagram on June 17, Dr. London called muscle “the organ of longevity”, highlighting how crucial it is to overall health — especially as we age.

Why Muscle Matters for a Longer Life
“As we get older, we all begin to lose muscle mass,” Dr. London explained. This loss contributes to frailty, which raises the risk of life-altering falls and makes daily activities harder. But maintaining muscle helps preserve independence. “It allows you to do simple things — like get down on the floor and back up, climb stairs with balance, or get in and out of a car safely,” he said.

More Than Movement: Muscle Shapes Metabolic Health
Beyond mobility, muscle plays a key role in managing blood sugar. Dr. London described muscle as a “sink for glucose” — helping to prevent chronically high blood sugar levels that can lead to insulin resistance, metabolic syndrome, and cardiovascular disease.

Maintaining muscle, he said, can significantly lower all-cause mortality.

How to Build and Keep Muscle
Dr. London advises two simple but essential habits:

Eat adequate protein tailored to your health and fitness goals.

Follow a consistent resistance training program that suits your lifestyle and avoids injury.

The key, he says, is starting with an activity you enjoy — because consistency matters more than intensity. “It’s not easy,” he admitted, “but it’s simple. Build muscle, and you improve both the quantity and quality of your life.”