Being a protein,
collagen contributes to total protein intake, and has been proven helpful for maintaining lean muscle mass, particularly in the elderly.7, 8 In fact,
collagen peptides may even be more effective for suppressing appetite than some other protein supplements (whey, casein, soy) according to one recent study.9 The only drawback is that
collagen is not particularly high in leucine, which is the
rate limiting factor for protein
synthesis of muscle tissue.