Maria Callas was one of the most famous of all 20th - century opera singers, but many believe that her rapid weight loss resulting from a drastic diet contributed to the deterioration of her voice.
Seepärast arvavad mõned, et just äärmusliku dieedipidamisega kaasnenud kaalukaotus mõjus halvasti ühe 20. sajandi kuulsaima ooperilaulja Maria Callase häälele.