Losing muscle? Protein isn’t enough (do THIS 3x a week instead)

Summary

The episode argues that maintaining muscle as we age takes more than eating extra protein: muscle health is connected to movement, overall diet, and the gut microbiome. The speakers describe the gut–muscle relationship as promising but still an active area of research. Some studies show associations, but they do not yet prove exactly how the connection works.

Key wellness and self-care strategies

• Keep moving and include strength training. The discussion recommends combining strength work with aerobic activity rather than relying on just one type of exercise. A suggested target is exercising about three times a week; even short strength sessions can be useful.
• Choose activities you can sustain. Examples include brisk uphill walking, cycling, swimming, yoga, Pilates, and weight training. Varying activities may also engage different aspects of fitness.
• Add balance practice as you age. Balance exercises can support everyday function and help reduce fall risk. One practical suggestion is doing squats while brushing your teeth—on one leg if able, or on both legs.
• Stretch regularly. The speakers recommend daily stretching, including a simple five-minute routine after waking, to maintain mobility and help reduce injury risk.
• Build healthy habits early. Muscle maintenance matters throughout life, not only in older age. Inactivity or prolonged bed rest can contribute to muscle loss.
• Eat a varied, fiber-rich diet. Foods emphasized include whole grains, legumes, vegetables, fruit, nuts, seeds, and other plant foods. The Mediterranean-style pattern discussed also includes olive oil and fish.
• Get protein from varied sources. Suggested options include beans and other legumes, tofu, mushrooms, fish, eggs, and fermented dairy. Combining plant foods, such as legumes with whole grains, can provide a broader mix of nutrients.
• Don’t assume more protein is always better. Protein is important, but the speakers caution against relying heavily on protein drinks or eating excessive amounts at the expense of other foods. They suggest that many people already get enough and discuss roughly 1–1.3 g per kg of body weight per day as an appropriate range in the context of the conversation.
• Support gut health as part of muscle care. A diverse diet with plenty of plant foods and fiber can nourish a diverse gut microbiome. The speakers discuss possible links involving inflammation, metabolism, and microbial products such as short-chain fatty acids, while noting that the evidence is still developing.
• Treat fasting as a personal routine, not a universal prescription. One speaker describes exercising before eating and following an eating window, but the conversation does not establish that this approach is necessary for everyone.

Why muscle health matters

Muscles support everyday activities such as standing up and walking. The discussion also links physical function with broader aspects of health, including metabolism, immunity, and cognitive function. The speakers note that muscle health involves more than muscle size: strength, coordination, nerves, tendons, and the amount of fat within muscle can matter too.

Presenters and sources mentioned

• Professor Claire Steves — Professor of Ageing and Health at King’s College London.
• Professor Tim Spector — microbiologist and author.
• Sarah Berry — ZOE chief scientist, mentioned in connection with the ZOE gut health bar.
• Professor Andy Galpin — movement expert, mentioned as a guest in another episode.

Research discussed includes work involving King’s College London master cyclists, a twin cohort, a German resistance-training study, and the New Age Mediterranean-diet study.