The method of Eight-Constitution acupuncture treatment is remarkably different from the methods used in the past 5000 years of acupuncture history. Eight-Constitution Medicine is a type of immunotherapy and approaches to treat the cause of an illness through restoring the weakened or dissipating immune system by changing the overly-unbalanced state of organs into a suitably-unbalanced state. Eight-Constitution Medicine also encourages patients to follow constitutional regimens, depending on his or her constitution, in order to prevent and treat illnesses. For example, patients should consume foods that would stimulate rather than suppress weak organs; they should also consume foods that would suppress rather than stimulate strong organs. Over time, such dieting will convert the body from an overly-unbalanced state of organs to a suitably-unbalanced state.