Before revision: A variety of fat fetishism is 'feed(er)ism' or 'gaining', where sexual gratification is obtained from the process of gaining, or helping others gain, body fat, not from the fat itself .
After revision: necessarily, though there is a lot of overlap with these groupsA variety of fat fetishism is 'feed(er)ism' or 'gaining', where sexual gratification is obtained from the process of gaining, or helping others gain, body fat, not from the fat itself .