Chronic stress can trigger an imbalance in the autonomic nervous system, characterized by overactivation of the sympathetic nervous system and deficiency of the parasympathetic nervous system, and this imbalance has been linked to aging, metabolic abnormalities, and cancer spread. Eastern techniques like Integrative Body-Mind Training that aim to balance the autonomic nervous system may help maintain health, and Western medicine is beginning to recognize the importance of balance in preventing and treating disease.