What is the typical percentage weight loss range within 1-2 years after Roux-en-Y gastric bypass?

What is the typical percentage weight loss range within 1-2 years after Roux-en-Y gastric bypass?

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

Answer: (B)

Roux-en-Y gastric bypass typically produces substantial weight loss, with most patients shedding about a quarter to a third of their starting body weight within 1 to 2 years. This reflects the combined effects of reduced stomach size, altered nutrient absorption, and hormonal changes that help curb appetite and enhance satiety. Weight loss tends to be fastest in the first 6–12 months and then slows, sometimes plateauing around 1–2 years. Individual results vary based on adherence to diet, physical activity, and metabolic factors. It’s also helpful to recognize that many clinicians report weight loss in terms of excess weight lost (EWL), often around 60–70% EWL at 1–2 years, which can correspond to roughly 25–35% total body weight loss depending on the person’s starting weight.

Roux-en-Y gastric bypass typically produces substantial weight loss, with most patients shedding about a quarter to a third of their starting body weight within 1 to 2 years. This reflects the combined effects of reduced stomach size, altered nutrient absorption, and hormonal changes that help curb appetite and enhance satiety. Weight loss tends to be fastest in the first 6–12 months and then slows, sometimes plateauing around 1–2 years. Individual results vary based on adherence to diet, physical activity, and metabolic factors. It’s also helpful to recognize that many clinicians report weight loss in terms of excess weight lost (EWL), often around 60–70% EWL at 1–2 years, which can correspond to roughly 25–35% total body weight loss depending on the person’s starting weight.