Yes it is quit right that stress cause demage on entire body. there is close relation in the stress and sleep. More stress can disturb the sleep and sleep for some time eliminate the stress. Stress some time cause the increase in the disease like skin condition Vitiligo, in such disease even during the treatment new patches appear due to the stress or the emotional stat of the patients. There is no medicine to reduce the stress althought experts say many tip to overcome the stress.