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01-04-2015 | Original Contributions

Effectiveness of B Vitamin Supplementation Following Bariatric Surgery: Rapid Increases of Serum Vitamin B₁₂

Authors: Carolyn E. Moore, Vadim Sherman

Published in: Obesity Surgery | Issue 4/2015

Abstract

Background

Few prospective studies have compared changes of nutrient intake while assessing effectiveness of thiamin, vitamin B₁₂, and folate supplementation to prevent B vitamin deficiencies immediately following Roux-en-Y gastric bypass (RYGB) and sleeve gastrectomy (SG). Therefore, we determined the response to 3 months supplementation on maintaining blood B vitamin concentrations.

Methods

Women undergoing RYGB (n = 11) and SG (n = 11) consumed bariatric vitamin supplements (12 mg thiamin, 350 μg vitamin B₁₂, 800 μg folic acid) daily for 3 months. Height, weight, body mass index, and blood vitamin concentrations were measured preoperatively and at 3 months. Wilcoxon signed-rank analyses compared body weight parameters, laboratory indices, and nutrient intake at baseline and 3 months.

Results

Supplementation for 3 months maintained blood thiamin, increased serum folate from 13.1 ± 5.4 to 16.3 ± 6.0 nmol/L (P = 0.049), and increased serum vitamin B₁₂ concentrations from 498 ± 150 to 736 ± 340 pg/mL (P = 0.005). Dietary intake of thiamin and folate decreased in the combined surgical groups, while dietary intake of B₁₂ was maintained. Bariatric B vitamin supplements provided multiple intakes of the Recommended Dietary Allowances (1090 % thiamin, 14,583 % vitamin B₁₂, 200 % folate).

Conclusions

Although energy intake decreased 64 %, B vitamin supplementation for 3 months resulted in a 48 % increase of serum vitamin B₁₂, a modest increase of serum folate, and no reduction of blood thiamin concentrations. Long-term effects of the rapid rise of serum B₁₂ levels attributed to the high content of supplements warrant further investigation.

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Title: Effectiveness of B Vitamin Supplementation Following Bariatric Surgery: Rapid Increases of Serum Vitamin B12
Authors: Carolyn E. Moore
Vadim Sherman
Publication date: 01-04-2015
Publisher: Springer US
Published in: Obesity Surgery / Issue 4/2015
Print ISSN: 0960-8923
Electronic ISSN: 1708-0428
DOI: https://doi.org/10.1007/s11695-014-1441-5

Keynote webinar | Spotlight on sleep in brain health

Springer Medicine

Effectiveness of B Vitamin Supplementation Following Bariatric Surgery: Rapid Increases of Serum Vitamin B₁₂

Abstract

Background

Methods

Results

Conclusions

Keynote webinar | Spotlight on sleep in brain health

Springer Medicine

Abstract

Background

Methods

Results

Conclusions

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