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Updated: Apr 19, 2026

Roux-en-Y Gastric Bypass Operation in Rats
Published on: June 11, 2012
Importance of nutrition visits after gastric bypass surgery for American veterans, San Francisco, 2004-2010
Aung Zaw Win1, Carol Ceresa2, Anne L Schafer3
1San Francisco Veterans Affairs Medical Center 4150 Clement St, San Francisco, CA 94121.
Introduction:
Nutrition counseling is important for veterans undergoing gastric bypass surgery. The aim of this study was to explore the relationship between the number of nutrition visits a patient attended and change in body mass index (BMI) after gastric bypass surgery for the veteran population.
Methods:
A retrospective study examined veterans (N = 79) who underwent Roux-en-Y gastric bypass surgery from June 2004 through July 2010. Spearman's correlation and multivariate regression analysis were used to analyze data.
Results:
A significant correlation was found between the number of postoperative nutrition visits and the change in postsurgery BMI at 2 years (Spearman's ρ = 0.21; P = .017). After adjusting for age, sex, and race, the association between postsurgery nutrition visits and BMI change persisted (β = 0.255; 95% confidence interval, 0.015-0.581; P = .039).
Conclusion:
Veterans with more nutrition visits following Roux-en-Y gastric bypass surgery experienced greater declines in BMI. This finding underscores the importance of the dietitian on the bariatric surgery team.
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