Which other factors affect healthy muscle aging?

Obesity,^[1] a low BMI,^[2] smoking,^[2] insufficient or excessive sleep,^[3] and lower blood vitamin D levels^[4] have all been associated with an increased risk of sarcopenia. Therefore, maintaining a healthy body weight, sleeping 6–8 hours per night, not smoking (or working toward quitting), and getting enough vitamin D in the diet and regular sunlight exposure are all important for supporting healthy muscle aging.