Obese patients who have had bariatric surgery, weight loss, have a death rate 2 times lower at 4 and a half years of follow-up than obese adults undergoing regimens and non-surgical treatment strategies. By-pass seems to be the most efficient technique from this point of view.
Much is known about the short-term results of bariatric surgery and its great effectiveness in weight loss, but little is known about its long-term effects.
Some previous studies suffered from limitation because of a number of factors, including the lack of a comparator group of obese patients who did not have bariatric surgery.
For this new study, published in JAMA, 8,385 obese Israeli patients who underwent bariatric surgery from 2005 to 2014 were solicited as well as 25,155 patients who received non-surgical care for the management of obesity.
Obesity can not be managed alone
This is an observational study and researchers can not control any interactions with the environment that could explain the results.
The all-cause death rate over approximately four-and-a-half years is lower in obese patients with bariatric surgery (1.3%) than in patients who have managed their obesity in a more traditional way (2.3%). statistically significant difference.
The only downside to this work, the imbalances between the two groups of obese patients according to age, gender, body mass index and diagnosis of diabetes. After adjusting for these differences between groups, bariatric surgery divides mortality by 2 for all causes compared with diet alone, and the results would be the best with "by-pass" surgery, versus sleeve and rings.