These numbers are averages, so your results may vary widely. There are a number of factors that contribute to the amount of success and how fast an individual’s loss will be after weight loss surgery, including type of surgery, preop program participation, diet, exercise, overall health and persistence.

Calculate your average projected weight loss here

These and similar charts are floating around the Internet. The original sources are unknown, but the numbers are consistent with several websites of bariatric surgeons.

Please contact us if you know where we can find the source for these numbers, information as to how medically accurate they might be or anything else to help to make this post more accurate.