Use of very low-calorie diet in preoperative weight loss: efficacy and safety
1997
Pekkarinen, T. | Mustajoki, P.
We report the efficacy of a very low-calorie diet (VLCD)-based weight reduction program in patients with morbid obesity whose elective surgery had been postponed because of being overweight. The safety of weight loss on the immune system will also be evaluated. Thirty patients (mean age, 50 years; weight, 125 kg; BMI, 44 kg/m2) were treated. The program consisted of a 7-week to 24-week VLCD period, supported by individual sessions with a therapist, and of a refeeding period of 1 month before surgery. Two patients discontinued, and the mean weight loss of the remaining 28 patients was 19.6 kg (15% of initial weight). In 23 patients, weight loss was 10% or more of the initial weight. After weight loss, 15 patients underwent surgery, 4 patients did not need an operation, and the remaining 9 patients were not operated on for various reasons. The numbers of circulating leukocytes, neutrophils, basophils, monocytes, CD3(+), CD4(+), CD8(+), and natural killer cells did not change significantly by the ninth week on VLCD or by the end of the program. However, there was a significant (p < 0.05) decrease in the immunoglobulinM serum concentration during the program. In conclusion, a VLCD program is suitable for preoperative weight reduction in morbid obesity and seems not to compromise the immune system.
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