Heart Expert Says Muscle Mass Could Be the Fountain of Youth

Why Building Muscle Might Be the Real Secret to Living Longer, Says Heart Surgeon.

When you lift weights at the gym, you’re not just working on your physique or strengthening your bones — you’re tapping into one of the most powerful tools for longevity, according to cardiothoracic surgeon Dr. Jeremy London.

Longevity, or living a longer and healthier life, is closely tied to muscle mass, says Dr. London. In a video shared on Instagram on June 17, he explained why muscle is more than just tissue — it’s what he calls the organ of longevity.

Why Muscle Matters More As You Age
“As we age, we naturally lose muscle mass — a process that affects both men and women,” said Dr. London. This loss can lead to frailty, which in turn increases the risk of serious injuries from falls and limits your ability to perform everyday tasks.

By maintaining and building muscle, you can stay more independent and mobile as you get older. Simple actions — like getting up off the floor, climbing stairs, or even getting out of a car — become easier and safer when your muscles are strong and stable.

Muscle Does More Than Move You
Beyond mobility, Dr. London emphasized how muscle mass plays a major role in metabolic health. “Muscle is a sink for glucose in our bodies,” he said. “Chronically elevated glucose levels can lead to insulin resistance and metabolic syndrome — both of which are risk factors for cardiovascular disease.”

In other words, more muscle can help regulate blood sugar, improve metabolic function, and ultimately lower your risk of chronic disease and early death.

How to Start Building Muscle for Longevity
The good news? You don’t have to become a bodybuilder to reap the benefits. Dr. London recommends two key steps:

Get enough protein in your diet based on your personal health goals.

Follow a smart resistance training program that is sustainable and safe.

He also stresses the importance of consistency and enjoyment. “Start with something you like doing, and make sure you’re not getting injured while doing it,” he advised. “With the right approach, you can not only add years to your life but also improve the quality of those years.”