How Losing Muscle Mass Affects Your Age

When we think of muscles, we often picture strength, exercise, or athletic performance. But muscle mass does far more than help us lift things or look good. In fact, it plays a vital role in how well we age—affecting everything from balance and energy to brain health and even how long we live.
Staying Strong, Steady and Independent
As we get older, keeping our muscles strong helps us move better, stay balanced, and avoid injury. One of the biggest risks as we age is falling—and strong muscles are our best defence. They help support our joints and keep us steady on our feet. That means we can stay active and independent for longer.
Muscles and Longer Life
Research shows that people with more muscle tend to live longer. On the flip side, losing too much muscle—a condition called sarcopenia—is linked to frailty and a higher risk of serious illness or accidents. Keeping our muscles healthy could be one of the most powerful tools we have for living a longer, healthier life.
Metabolism, Weight and Blood Sugar
Muscles don’t just move us—they’re also key players in how we manage energy. The more muscle you have, the more calories you burn, even when resting. Muscles also help keep blood sugar levels steady, which lowers the risk of type 2 diabetes. But not all muscle is equal: muscle filled with fat (like the marbling in steak) can cause inflammation and work less effectively. So, quality matters, not just quantity.
Fighting Inflammation and Disease
When we use our muscles, they release small proteins that help reduce inflammation and support our immune system. Since low-level inflammation is linked to many age-related diseases, this is a big win for overall health, especially as 58% of UK adults over 60 have multiple inflammatory conditions that worsen sarcopenia.
Supporting Bones and Preventing Fractures
Muscles and bones work together. When muscles pull on bones during movement, it helps bones stay strong. That’s why strength training can reduce the risk of osteoporosis and broken bones in later life.
Energy, Hormones and Brain Health
Muscles are full of tiny energy producers called mitochondria. Healthy mitochondria keep us energised and support repair in the body. Strong muscles also help regulate important hormones—like those that manage stress, blood sugar, and even growth.
And let’s not forget the brain. Moving our muscles boosts chemicals that support memory, focus, and mood. More muscle is even linked to a lower risk of dementia.
A Healthier Heart
Muscle helps the heart too—by improving blood flow, reducing blood pressure, and supporting healthy cholesterol and sugar levels.
The Bottom Line
Muscle isn’t just for bodybuilders—it’s for everyone who wants to age well. Strong, healthy muscle means better movement, better health, and a better chance of staying active, independent, and sharp for years to come.
It’s not just about having big muscles—it’s about having the right kind.
If you’re looking to improve your physical health and look and feel years younger, get in touch to find out more about our in-person and online 6 week programmes.