Protein timing after age 50 may accelerate muscle loss.

Experts report that muscles become less responsive to protein after age 50 and that many people concentrate most of their daily protein at dinner rather than spreading 15–30 grams across meals.

Updated U.S. dietary guidance has put renewed emphasis on protein alongside fruits and vegetables, a point discussed by FDA Commissioner Dr. Marty Makary on Fox & Friends. Muscle mass affects strength, mobility, metabolism and long-term independence, and experts note age-related decline is common. Adults can lose up to about 8% of muscle mass each decade after age 30, a progressive loss called sarcopenia. Some specialists say the current RDA of 0.8 grams per kilogram was intended to prevent deficiency in younger adults rather than to optimize muscle preservation in later life. Key points: - Experts describe a reduction in muscle sensitivity to protein with age, a phenomenon called anabolic resistance. - The RDA for protein is 0.8 grams per kilogram per day; some experts cited recommend older adults may benefit from at least 1.2 grams per kilogram, and the 2025–2030 Dietary Guidelines for Americans list 1.2–1.6 grams per kilogram depending on caloric needs. - Many people concentrate protein at dinner instead of distributing it across meals; general recommendations mentioned in the article are about 15–30 grams of protein per meal. - The article notes that postmenopausal women may face accelerated muscle loss linked to lower estrogen levels and may be directed toward higher intake ranges by some experts. - Professional sources in the article advise meeting protein needs largely through whole foods, note supplements can be appropriate for some circumstances, and mention that people with chronic kidney disease should discuss higher protein intake with a health-care provider. Summary: The updated guidelines raise recommended protein targets for many adults and highlight the role of meal-to-meal protein distribution. Undetermined at this time.