title: Menstrual Changes in Athletes.
abstract: In brief: Menstrual irregularity in athletes, once thought to be a phenomenon isolated to endurance athletes, is being widely reported as more women engage in intense exercise. It could stem from physical or psychological stress, changes in hormone function or body composition, or a combination of these factors. This panel of experts helped to define the problem, but they agreed that research is confounded by the many variables involved. Until the answers are in, athletes should not assume that changes in their menstrual cycles stem from exercise alone. They should consult a gynecologist to rule out pathological changes.