• You may become obsessed with losing weight.

This is not a common case, but it is a possibility. There are some people who are going obsessed over losing weight to the point that they are already below their normal weight range. Other people who are obsessed with weight loss may just develop eating disorders such as anorexia, which is having an intense fear of gaining weight even if they are already underweight, and bulimia, which are people who binge eat and then use methods like laxatives and vomiting to expel the food they ate in order not to gain weight.