Conclusions Due to exploratory design s and high risk of bias , the effectiveness of hypnosis or hypnotherapy in stress reduction remains still unclear .
Background Although hypnosis and hypnotherapy have become more popular in recent years , the evidence for hypnosis to influence perceived stress is unclear .
In this systematic review we search ed and evaluated r and omized clinical studies investigating the effect of hypnosis on perceived stress reduction and coping .
Modulation of cellular immunity in medical students
This study assessed the psychosocial modulation of cellular immunity in 34 medical-student volunteers . The first blood sample was obtained 1 month before examinations , and the second on the day of examinations . There were significant declines in the percentage of helper/inducer T- lymphocytes , in the helper/inducer-suppressor/cytotoxic-cell ratio , and in natural killer-cell activity in the blood sample s obtained on the day of examinations . Half of the subjects were r and omly assigned to a relaxation group which met between sample points ; the frequency of relaxation practice was a significant predictor of the percentages of helper/inducer cells in the examination sample . Three biochemical nutritional assays ( albumin , transferrin , and total iron-binding protein ) were within normal limits on both sample s. Data from the Brief Symptom Inventory showed significantly increased global self-rated distress associated with examinations in the no-intervention group , compared to nonsignificant change in the relaxation group . Clinical and theoretical implication s are discussed
Conclusions Due to exploratory design s and high risk of bias , the effectiveness of hypnosis or hypnotherapy in stress reduction remains still unclear .
Background Although hypnosis and hypnotherapy have become more popular in recent years , the evidence for hypnosis to influence perceived stress is unclear .
In this systematic review we search ed and evaluated r and omized clinical studies investigating the effect of hypnosis on perceived stress reduction and coping .