Eating disorders in teenagers

Summary: It is estimated that about 2.2 billion children between the ages of 13 and 18 will develop an eating disorder. Teenagers have been found to be more likely to have eating disorders because they are under high levels of stress and still attend school, which sometimes has a negative affect on their emotional health. The development of an eating disorder can be a result of many things, though a prime cause is an environment with a high focus on body image.  Bulimia and anorexia are examples of eating disorders. Negative effects include extreme fatigue, an inability to focus, and illnesses such as depression. In some serious cases, heart irregularities can occur as well. While some cases can be severe, eating disorders are treatable.
Connection: This relates to health class because eating disorders can stem from unhealthy diets, and Ms. Beaumont mentioned we'd be learning about nutrition later in the year. It is important to have knowledge regarding nutrition to stay healthy and. 
Questions: Do sports that are focused on weight requirements have any impact on the development of eating disorders?
Are teenagers also not prioritizing eating and eating healthily?