Related Episodes for Why people age at different rates and how menopause and obesity contribute | Dr. Morgan Levine

“In a crossover study of 15 healthy adults, a single 0.35-gram-per-kilogram dose during acute sleep deprivation changed brain-energy metabolites and improved selected cognitive tasks.”

“The excerpt also reviews controlled muscle studies: omega-3 attenuated loss during immobilization and increased the amino-acid-stimulated muscle-protein-synthesis response under tested conditions. These findings do not generalize to every dose or population.”

“A large meta-analysis found that organic crops tended to contain higher concentrations of several phenolic compounds, lower cadmium, and fewer detectable pesticide residues, but no single nutritional pattern applies to every fruit or vegetable.”

“The PROT-AGE Study Group recommends at least 1.0 to 1.2 grams of protein per kilogram of body weight per day for most adults over 65 to help maintain lean mass and physical function. Longitudinal evidence connects higher protein intake with better muscle and frailty outcomes.”

“A 2025 network meta-analysis of 217 randomized trials and 15,684 people with knee osteoarthritis found that aerobic exercise was likely the most beneficial exercise category for pain, function, gait, and quality of life.”

“In later randomized trials, urolithin A improved some laboratory measures of muscle endurance or hamstring strength, but it did not significantly improve key primary outcomes such as six-minute walk distance, muscle ATP production, or peak power.”

“Large treadmill cohorts associate higher measured fitness with lower mortality, while a 46-year study of middle-aged men linked the highest fitness category with about 4.9 additional estimated life-years compared with the lowest category.”

“The 10,000-step target began as a memorable way to market a Japanese pedometer, not as a biological threshold. Walking still matters because replacing sedentary time with movement supports health, and large cohort studies associate more daily steps with lower mortality.”

“Reversing the Cardiac Effects of Sedentary Aging in Middle Age—A Randomized Controlled Trial - In sedentary middle-aged adults, 2 years of regular exercise improved heart function and reduced heart stiffness, potentially lowering future heart failure risk.”

“In the five-year Generation 100 trial, adults ages 70 to 77 completed supervised high-intensity interval training or moderate continuous training, demonstrating that structured vigorous exercise can be feasible in older populations when it is introduced progressively and matched to health and fitness.”