Most people look aged with drastic weight loss-too little fat in the face can cause your features to appear gaunt and hollowed, making you look older than you really are. But in some cases, weight gain can add years, too.
A full face usually features plump cheeks and fewer wrinkles, which are associated with youthfulness. However, once you get past the chin, the neck is often fatty. This can make a person look years older.
The easiest way to combat excess weight is with proper diet and exercise. A more drastic option is liposuction, which can work for stubborn areas like the neck and chin.