The male version of anorexia nervosa, or any general wasting away of the body in men. This eating disorder is commonly seen in starlets but is now affecting men, where they take on the wasted appearance of starving children in third world countries.
This is more often a drug-related issue in men, than the self-esteem issue it manifests as in women.
J.Lo's man Marc Antony has totally got manorexia. The guy looks like Skeletor.