This excerpt from NSCA’s Guide to Sport and Exercise Nutrition explains branched-chain amino acids

Exercise is an underutilized therapy for the treatment of cognitive diseases such as Alzheimer’s disease and depression. While exercise shows more promise for the prevention, rather than the treatment, of Alzheimer’s disease, exercise therapy compares favorably to the most common treatments of depression (psychotherapy and antidepressants).

Emerging evidence suggests that omega-3 fatty acids may play a beneficial role in preservation of, and increases in, skeletal muscle mass. This is of particular relevance to the elderly who display age-related declines in muscle mass and function.