Ileojejunal bypass

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The ileojejunal bypass is an experimental surgery designed as a remedy for morbid obesity.[1]

It was first performed on a series of patients at White Memorial Hospital, Los Angeles, California, in the mid- to late-1970s. Patients admitted to the program had to meet all of the following requirements:

  1. They must have been diagnosed as "morbidly obese"'
  2. They must have had a lifelong history of conventional forms of dieting, all of which failed, and
  3. They must have passed a series of psychological tests to show that both:
    • there was no psychosomatic basis for their condition, and
    • they were mentally stable enough to accept the consequences of a life-changing surgery.


  1. ^ Pilkington TR, Gazet JC, Ang L, Kalucy RS, Crisp AH, Day S (June 1976). "Explanations for weight loss after ileojejunal bypass in gross obesity". Br Med J. 1 (6024): 1504–5. PMC 1640791Freely accessible. PMID 1276737. doi:10.1136/bmj.1.6024.1504.