Since meat and dairy eaters have the problem of losing muscle mass as they age I don't know how that info applies to you. (nutritionfacts.org)
The interesting part was that the runners didn't lose ANY muscle mass in their upper bodies, ALL the mass was lost in their legs — why? (scoobysworkshop.com)
But restrict your food intake too much and you'll run the risk of losing muscle mass and not being able to exercise effectively — both important aspects of successful weight loss programming. (instantknockout.com)