Vitamin concentrations 5 years after gastric bypass

Area of Science:

• Bariatric Surgery
• Nutritional Science
• Endocrinology

Background:

• Limited long-term data exists on vitamin status post-bariatric surgery.
• Roux-en-Y gastric bypass (RYGB) is a common weight-loss procedure.
• Understanding long-term nutritional impacts is crucial for patient management.

Purpose of the Study:

• To evaluate vitamin status changes up to 5 years after RYGB.
• To assess the long-term effects of RYGB on key vitamin concentrations.
• To correlate vitamin status with recommended supplement use.

Main Methods:

• Retrospective analysis of RYGB patient data (2004-2008).
• Collected vitamin concentrations and supplement intake data up to 2012.
• Utilized linear mixed models to track vitamin changes over time, adjusting for covariates.

Main Results:

• Included 441 patients (75.1% women, mean BMI 46.1 kg/m²).
• At 5 years post-RYGB, vitamin B-6, folic acid, B-12, C, and A concentrations were significantly higher.
• Thiamine, 25-hydroxyvitamin D, and vitamin E levels showed no significant change.
• Supplement use increased significantly post-surgery, though decreased by year 5.

Conclusions:

• RYGB surgery is associated with improved or stable vitamin status up to 5 years.
• Recommended supplementation protocols appear effective in maintaining vitamin levels.
• Long-term monitoring of vitamin status post-RYGB is essential.