St Macedonius the Anchorite, in order to heal a woman afflicted with bulimia (though eating thirty chickens a day, she could not by surfeit extinguish her appetite but hungered for still more’) came and offered prayers, and by placing his hand over water, tracing the sign of salvation [the Sign of the Cross], and telling her to drink, healed the disease. And so completely did he blunt the excess of her appetite that thereafter a small piece of chicken each day satisfied her need for food.
Mental Disorders & Spiritual Healing: Teachings from the Early Christian East
Jean-Claude Larchet