I don't enjoy anything except food. is this a sign of depression?

Possibly. Do you: Have other symptoms? Sxs may include feeling sad, irritable or angry; v in sex drive ; energy or motivation levels. One may socially isolate or stop involvement in normal activities. Sleep, appetite ; weight may ^ or v. Concentration, memory ; self esteem may v with an absence of joy, feelings of helplessness or hopelessness. There may be crying spells or thoughts of death or suicide.