disease predominantly found in females whose sport, training, or competition is enhanced by a reduced ratio of body fat to lean body mass; its components are osteoporosis, disordered eating (usually anorexia nervosa), and amenorrhea

loss of BMD and destruction of associated matrix minerals

irregular or complete absence of menses

often related to disorders of self-image, self-concept, and self-esteem

"addiction" to food

the person with anorexia nervosa may perceive themselves as fat or may be afraid of becoming fat; this person probably has an emotional disorder and reacts by controlling their eating behaviors

the primary symptoms are episodes of binging and purging

these individuals view themselves as small and frail, when in reality they are large and muscular