Girls who are very active may even skip a few periods. However, some girls who train really hard may skip many menstrual periods, or they may get their period at a late age, especially if they have lost weight or have developed an eating disorder. Girls may begin to skip periods if they are not getting enough nutrition, or if there is too much stress on their body from sports. This stress lowers estrogen levels, which may cause skipped periods. You may be focusing too much of your time on eating, diets, and keeping thin.
Healthy nutrition is needed to have regular periods and normal estrogen levels.
If you lose weight, you are especially likely to skip periods. There are two common eating disorders related to the Female Athlete Triad. When a girl or young woman with anorexia nervosa or bulimia does too much exercise, she is putting an extreme strain on her body. Even eating regular amounts of food may not be enough for a very active person to maintain a normal weight. This lack of menstrual periods can happen when there is weight loss, disordered eating, or intense training or exercise.