Obesity is a medical condition defined as an excess amount of body fat. More than just a superficial concern, obesity can cause a number of health problems including diabetes and heart disease. The emotional toll that being obese can have on a person can be equally damaging. Obesity carries with it a social stigma that may lead to discrimination, teasing or bullying, and poor self-esteem. In both children and adults, obesity has been linked to depression. A mental health professional can be helpful in dealing with the emotional effects of obesity as well as working with you to create positive lifestyle changes.