Problems of changes of bone mineral density which are newly detected medical consequences of eating disorders are discussed by the author. Osteopenia and osteoporosis are characterized by low density of bones accompanied with a higher risk of fractures and stunting of growth, especially in early and mid-adolescence. The etiology of osteopenia and osteoporosis differs from the same medical symptom psotmenopausal women and requires specific attention and an adequate therapeutic approach.

        Key words: eating disorders, osteoporosis, osteopenia, etiology, treatment.