By how much does all-cause mortality decrease after Roux-en-Y gastric bypass, largely due to reductions in cardiovascular and cancer mortality?

By how much does all-cause mortality decrease after Roux-en-Y gastric bypass, largely due to reductions in cardiovascular and cancer mortality?

• A. 10%
• B. 25%
• C. 40%
• D. 60%

Answer: (B)

Weight loss from Roux-en-Y gastric bypass leads to meaningful drops in death from causes tied to obesity, especially heart disease and cancer. The surgery produces sustained improvements in cardiovascular risk factors—lower blood pressure, better lipid profiles, and markedly improved insulin sensitivity and blood glucose control—which translates into fewer fatal cardiovascular events. Obesity is also linked to higher cancer risk through mechanisms like increased estrogen from adipose tissue, higher insulin/IGF-1 signaling, and chronic inflammation; weight loss helps reduce these factors, lowering cancer mortality risk as well. Taken together, long-term data show about a 25% reduction in all-cause mortality after Roux-en-Y gastric bypass, with the largest contributions coming from decreases in cardiovascular and cancer deaths.

Weight loss from Roux-en-Y gastric bypass leads to meaningful drops in death from causes tied to obesity, especially heart disease and cancer. The surgery produces sustained improvements in cardiovascular risk factors—lower blood pressure, better lipid profiles, and markedly improved insulin sensitivity and blood glucose control—which translates into fewer fatal cardiovascular events. Obesity is also linked to higher cancer risk through mechanisms like increased estrogen from adipose tissue, higher insulin/IGF-1 signaling, and chronic inflammation; weight loss helps reduce these factors, lowering cancer mortality risk as well. Taken together, long-term data show about a 25% reduction in all-cause mortality after Roux-en-Y gastric bypass, with the largest contributions coming from decreases in cardiovascular and cancer deaths.