An eating disorder categorized by a strong desire to become thin, fear of gaining weight, food restriction, and low weight is referred to as anorexia. Many individuals suffering from anorexia perceive themselves as overweight, although they may be underweight. Such individuals often deny issues with low weight. They only consume specific foods, only eat small amounts of food, and measure their weight most often. For weight loss, some of them also use laxatives or force themselves to vomit and believes in doing excessive exercise. Complications may involve heart damage, infertility, and osteoporosis. Society must fight against anorexia.

The types of food consumption and the number of calories are restricted generally by people with anorexia. Anorexia can impact people of all ethnicities, races, sexual orientations, genders, and ages. It also has been found by psychologists and historians that symptoms of anorexia have been displayed by people for thousands or hundreds of years. Although during adolescence, the disorder begins frequently. An increasing number of older adults and children have also been diagnosed with anorexia. One cannot predict whether an individual is or not suffering from anorexia by merely looking at them. It also has been found by studies that anorexia can be found in larger-bodies individuals. Due to cultural prejudice against obesity and fat, they may appear to be diagnosed less likely.

Specific criteria must be met by people diagnosed with anorexia. This involves a disturbance in the way in which body shape or weight of a person is experienced or is the disproportionate impact of body shape or weight on self-evaluation. The criteria also involve intense fear of becoming fat or gaining weight; even the individual may be underweight. The criteria also involve limitations of energy intake related to requirements resulting in a significantly low body weight in the context of physical health, developmental trajectory, sex, and age.