There are four common bariatric surgeries that can help people lose considerable amounts of weight and keep it off for good. These are the gastric band, gastric bypass, gastric sleeve, and duodenal switch surgeries.
There are some significant distinctions between these treatments, and the risks and benefits vary depending on the surgery. The projected weight reduction for each of these weight loss surgery treatments also varies.
How to Calculate Weight Loss After Bariatric Surgery
If a patient weighs 200 pounds at the start and 100 pounds at the end, they are 100 pounds overweight. As a result, if they drop 100 pounds following surgery, they will have shed 100% of their excess weight; if they lose 50 pounds, they will have lost 50%.
To compute the expected EWL, remove your starting weight from your current weight, divide the result by your excess weight, and multiply the result by 100.
Remember that traditional dieting and exercise programmes often have a success rate of 5% to 10% EWL.
Weight Loss Expected With a Gastric Band
Patients who undergo the gastric band procedure can expect to lose 35 to 45% of their excess weight. If a person loses roughly 40% of their excess weight using the gastric band, the results are rather satisfactory.
If the patient loses more than 40% of their body weight, the band is most likely too tight, and the patient is most likely experiencing reflux and not eating in a routine and social manner. This frequently necessitates the removal of fluid from the band in order to loosen it, and when this occurs, the patient frequently regains a large amount of weight.
Gastric Sleeve Weight Loss Expected
Most people can expect to lose between 60 and 75% of their extra weight with the gastric sleeve.
The starting body mass index (BMI) of the patient will indicate how much weight they can expect to lose. Patients with BMIs in the 40s and 50s will lose a large quantity of weight, although at a lower percentage of their excess weight. Patients who began at a lower weight range (BMI in the 30s and 40s) will frequently drop close to 100% of their excess weight.
Weight Loss Expected After Duodenal Switch
When comparing bariatric surgeries by projected weight loss, the duodenal switch produces the best overall weight reduction results. Patients who have a duodenal switch should anticipate losing between 80 and 90% of their excess weight, and in many cases, up to 100%.
Weight Loss Timeline
Most patients (regardless of method) will lose 10% of their excess weight in the first 6 to 8 weeks after surgery. They should expect to shed 50% of their excess weight in the next 4 to 5 months.
Patients will typically lose an additional 50% of their excess weight during the next 12 months, for a total of 100%. Patients’ weight loss often begins to plateau after the first year of surgery. In general, patients should expect to reach their end weight, which is hopefully their goal weight, 18 months after surgery.
Additional Factors Influencing Weight Loss
Aside from the treatment you choose, the above-mentioned projected weight reduction ranges vary depending on social and environmental factors. The amount of weight reduction expected will be determined by the patient’s dedication to the therapy, as well as their commitment to making healthier food choices and raising their general activity level.
Similarly, predicted weight loss may be affected by environmental factors such as stress, lack of sleep, heredity, and gender. Women tend to lose 10% less weight and lose weight more slowly than males due to the hormones they generate. Similarly, age will play a role in projected weight loss. Because young patients have a stronger metabolism, they are more likely to shed the greatest weight following their bariatric treatment.
The bottom line
Weight loss surgery is the greatest approach for maximal and sustained weight loss for many patients who have tried and failed at traditional weight management through diet and exercise, or who are concerned that their weight is out of control. However, surgery, like any other treatment, is not without risk, and results will vary depending on the individual.