Which weight loss range is expected after Roux-en-Y gastric bypass within 1-2 years when comparing to initial body weight?

Which weight loss range is expected after Roux-en-Y gastric bypass within 1-2 years when comparing to initial body weight?

• A. 10-15%
• B. 40-50%
• C. 60-70%
• D. 25-35%

Answer: (D)

Roux-en-Y gastric bypass leads to substantial weight loss in the first 1–2 years because the procedure reduces stomach capacity and alters gut hormones that control appetite and metabolism. By this time, most patients have lost a meaningful portion of their starting weight, roughly a quarter to a third of it. This corresponds to about 60% of excess weight lost, which translates to about 25–35% of the initial body weight. For example, someone starting at 300 lb might lose around 75–105 lb in that period, bringing them to roughly 195–225 lb. The other ranges are less typical for the general pattern observed in the first couple of years post-surgery.

Roux-en-Y gastric bypass leads to substantial weight loss in the first 1–2 years because the procedure reduces stomach capacity and alters gut hormones that control appetite and metabolism. By this time, most patients have lost a meaningful portion of their starting weight, roughly a quarter to a third of it. This corresponds to about 60% of excess weight lost, which translates to about 25–35% of the initial body weight. For example, someone starting at 300 lb might lose around 75–105 lb in that period, bringing them to roughly 195–225 lb. The other ranges are less typical for the general pattern observed in the first couple of years post-surgery.