Add Yahoo as a preferred source to see more of our stories on Google. While protein is essential for muscle growth, so are several other nutrients. Carbohydrates, magnesium, creatine, omega-3s and ...

Maintaining muscle is key to enjoying a healthy, active lifestyle at any age. After age 30, muscle mass decreases by 3% to 5% per decade, which only accelerates with advanced age. This age-related ...