Muscle Isn't Vanity. Gabrielle Lyon Says It's Preventive Medicine

Lyon's 2023 book Forever Strong: A New, Science-Based Strategy for Aging Well argues that muscle is "the organ of longevity"—not a vanity project but a metabolic powerhouse. When you contract it, she says, muscle secretes peptide hormones called myokines that communicate with the brain, liver, and pancreas. "It creates a whole-body cross talk," she says. "It's amazing." Through her Institute for Muscle-Centric Medicine—a Long Island clinic plus a telemedicine practice that she founded in 2018—Lyon treats patients with protocols built entirely around muscle. But her reach extends far beyond her practice. She wrote two bestselling books, appears frequently on media platforms, founded National Muscle Health Month, hosts The Dr. Gabrielle Lyon Show podcast, has more than 1 million followers on Instagram, and continues to publish peer-reviewed research. "I'm not an influencer," she says. "I'm a practicing physician." But by elevating muscle health from a fitness goal to a cornerstone of healthy aging, Lyon has helped reshape the longevity conversation. Lyon’s prescription: do resistance training at least twice a week, and eat enough protein. You’ll need more as you age, she says, and protein delivers essential amino acids your body can't make on its own. The payoff isn't reserved for the young. Lyon points to data showing that even 80- and 90-year-olds can build strength. "There's only one way to do it wrong," she says, "and that's to not do it."In her ideal world, your doctor would ask how many push-ups you can do and how long you can hang from a bar—and care about the answer. In one study of nearly 140,000 adults in 17 countries, a weaker grip strength was associated with a higher risk of death from any cause.As GLP-1 weight-loss medications become increasingly common, Lyon worries about the loss of lean tissue that can accompany rapid weight reduction, particularly in older or otherwise vulnerable patients. She argues that preserving muscle—not simply losing pounds—may be one of the defining health challenges of the next decade. We're poised to "trade one epidemic for another," she warns. The good news, she says, is that sarcopenia can often be mitigated, and in some patients partly reversed.Lyon’s goal is to put people on a practical roadmap for building strength and living healthier for longer. To do that, she hopes to get people to care more about muscle than fat. "It's not about what we have to lose," she says. "What do we have to gain?"