Also called Reishi or Ling Chih, it is known traditionally as the "mushroom of immortality" and the "Great Protector." Research shows it significantly enhances the immune system. Ganoderma increases the body's resistance in a variety of ways from helping to prevent colds, flus and allergies, to providing useful adjunctive treatments for AIDS and cancer. Ganoderma has a mild diuretic action that assists the removal of metabolic waste, making it useful in weight loss and arthritis treatment. It also increases blood circulation, protecting the heart, and helps relieve insomnia and nervousness.