New research underscores a powerful, yet often overlooked, determinant of long-term health and longevity: muscular strength. A landmark study led by Dr Michael LaMonte at the University of Buffalo, involving more than 5,000 women aged 63 to 99, has found a compelling link between greater muscular strength and a significantly lower risk of death. Women in the highest quartile for grip strength had a 33% lower mortality risk compared to the weakest group, a relationship that holds true even when accounting for other activity levels and health markers.
The critical window: menopause and muscle loss
This connection becomes particularly crucial with age. Dr LaMonte highlights a pivotal moment for women: “When women go through menopause and lose their body’s own secretion of oestrogen, the loss of skeletal muscle mass increases rapidly.” This hormonal shift often leads to changes in body composition, including increased fat storage around the abdomen and accelerated muscle loss—a combination that heightens health risks. This process is part of sarcopenia, the progressive age-related loss of muscle mass, strength, and function that typically begins in the 30s and accelerates after 60. Unlike general muscle atrophy, sarcopenia involves a decrease in both the size and number of muscle fibres, driven not only by ageing but also by inactivity, poor nutrition, and chronic disease. Men also experience a gradual decline in testosterone, which can reduce the body’s capacity for muscle maintenance.
The consequence of this decline is stark. “When we can no longer get out of our chair and move around, we are in trouble,” Dr LaMonte says. Maintaining muscular strength is fundamental to preserving the basic mobility that underpins independent living and healthy ageing.
Muscle: the body’s intelligent communicator
Far from being mere passive tissue, skeletal muscle is now recognised as a dynamic endocrine organ. It synthesises and releases signalling proteins called myokines with every contraction. These myokines facilitate a constant conversation with other systems, mediating many of exercise’s profound benefits. They exhibit strong anti-inflammatory properties, combatting the chronic inflammation linked to numerous diseases, and play key roles in regulating metabolism, including blood sugar and insulin sensitivity. Myokines are also involved in cognitive function and immune responses.
This intelligence fundamentally changes how we view strength work. As author and surfer Bonnie Tsui notes, “Skeletal muscle is an endocrine tissue, responsible for making and releasing hormones which control the actions of other cells or organs in the body.” This secretory role means that healthy muscle does extensive “heavy lifting” for overall well-being, influencing the heart, brain, and other organs to lift mood and optimise bodily function.
Harnessing strength for a healthier lifespan
The prescription for countering sarcopenia and reaping these systemic benefits is consistent, semi-regular strength training. You need not train like a bodybuilder; challenging muscles across the body a couple of times a week can preserve and even build muscle mass, which peaks around age 30-35 before declining.
The advantages extend far beyond strength. Resistance training provides the mechanical stimulus essential for bone health, helping to slow age-related bone loss and reduce fracture risk. It supports metabolic health by improving insulin sensitivity—a key concern during and after menopause—and aids in blood sugar regulation. Furthermore, it enhances joint stability, reduces pain, and bolsters mental health by alleviating symptoms of anxiety and depression and improving cognitive function. Ultimately, it is vital for maintaining functional independence in daily life.
For those in midlife and beyond, experts generally recommend two to three full-body strength sessions per week. Effective training involves moderate weights with a controlled tempo, aiming for 8 to 12 repetitions per set to build muscle while managing joint stress. Prioritising compound movements—such as squats, presses, and rows—that work multiple muscle groups is efficient. Adequate protein intake, typically between 1.2 and 1.6 grams per kilogram of body weight daily, is also crucial for muscle repair and growth.
The modest reality behind viral fitness fixes
In contrast to this consistent approach, viral fitness trends often promise quick fixes. One such trend advocates doing 50 jumps every morning, with social media claims touting benefits for cardiovascular awakening, lymphatic flow, and metabolism priming. When consulted, Jack McNamara, a senior lecturer at the University of East London’s School of Health, Sport and Bioscience, offered a measured assessment: the perks are “probably modest, but not zero.”
While any movement is positive and such trends can act as a gateway to further exercise, experts caution that the cited benefits—like improved circulation or lymphatic drainage—are common to most physical activity, not unique to jumping. There is also a risk that overhyped promises lead to demoralisation if results fall short, potentially causing people to disengage entirely. The trend is not a substitute for a balanced regimen that includes proper strength training and cardiovascular exercise.
The enduring truth, underscored by both the latest research and established science, is that the real magic for health and longevity lies not in fleeting hacks but in the regular, disciplined care of the medical marvel we all possess: our muscles.
