Volume 72 Supplement 1

Proceedings of the Fourth Belgian Nutrition Society Symposium 2014: Genes and nutrition, is personalised nutrition the next realistic step?

Open Access

Do Roux-en-Y gastric bypass patients meet the dietary guidelines?

  • Ina Gesquiere1Email author,
  • Kelly Van Meerbeeck2,
  • Veerle Foulon1,
  • Patrick Augustijns1,
  • Matthias Lannoo3,
  • Ann Meulemans4,
  • Bart Van der Schueren4 and
  • Christophe Matthys4
Archives of Public HealthThe official journal of the Belgian Public Health Association201472(Suppl 1):P4

DOI: 10.1186/2049-3258-72-S1-P4

Published: 6 June 2014

Background

The prevalence of obesity has increased to epidemic proportions and, as a result, the number of bariatric surgeries has increased worldwide. To date, bariatric surgery remains the sole medical intervention that achieves considerable and sustained weight loss. As both obesity and bariatric surgery are associated with nutritional deficiencies, the aim of this study was to evaluate the dietary intake of macro- and micronutrients in patients before and after Roux-en-Y gastric bypass (RYGB).

Methods

A prospective observational study was performed at University Hospitals Leuven, Belgium. Patients completed a dietary record of two non-consecutive days before RYGB and 1 and 3 months after RYGB. Intake of macronutrients and micronutrients was calculated for the different time-points. Paired sample t-tests were performed to analyse differences between time-points.

Results

Table 1

Intake of macronutrients at different time-points, shown as mean±SD.

n=22

Intake pre-RYGB

Intake 1 month post-RYGB

Intake 3 months post-RYGB

Significance

Carbohydrates (g)

245.2±72.4

81.8±39.1

110.9±51.42

1,2

Proteins (g)

87.3±23.8

37.2±16.6

48.0±14.4

1,2,3

Fat (g)

92.2±40.4

20.5±12.6

36.3±16.2

1,2,3

1 p<0.01:pre-op vs post-op 1 month; 2 p<0.01:pre-op vs post-op 3 months; 3 p<0.01:post-op 1 month vs post-op 3 months

Table 2

Intake of micronutrients at different time-points, shown as mean±SD.

 

Intake pre-RYGB (32 patients)

Intake 1 month post-RYGB (28 patients)

Intake 3 months post-RYGB (26 patients)

Significance

Ca (mg)

970.4±519.6

638.4±287.9

695.1±352.3

 

Fe (mg)

12.6±3.7

5±2.9

6.0±1.8

1,2

Cu (mg)

2.1±1.5

1.0±0.9

4.9±18.6

 

Zn (mg)

46.6±92.1

10.2±21.1

6.6±3.7

 

Vitamin A (µg)

962.8±405.2

721.5±490.0

787.5±716.6

 

Vitamin B1 (mg)

1.7±0.7

0.6±0.3

0.8±0.3

1,2

Vitamin B12 (µg)

5.4±2.5

2.3±1.5

3.3±1.8

1,2

Vitamin C (mg)

138.9±83.8

70.3±56.7

85.1±52.2

1,2

Vitamin D (µg)

8.4±5.1

5.2±3.3

4.2±3.2

 

1 p<0.01:pre-op vs post-op 1 month; 2 p<0.01:pre-op vs post-op 3 months; 3 p<0.01:post-op 1 month vs post-op 3 months

Conclusions

The intake of macro- and micronutrients is markedly decreased one month after RYGB. At three months post-surgery, the intake of macronutrient increases, but the micronutrient intake remains identical at a worryingly low level. Our data clearly suggest that nutritional guidance is essential following bariatric surgery.

Trial registration

Clinicaltrials.gov #NCT01571180.

Declarations

Acknowledgements

I.G. receives a PhD scholarship from the Agency for Innovation by Science and Technology, Flanders.

Authors’ Affiliations

(1)
Department of Pharmaceutical and Pharmacological Sciences, KU Leuven
(2)
Department of Health and Technology, Leuven University College
(3)
Department of Pathology Abdominal Surgery, University Hospitals Leuven
(4)
Clinical and Experimental Endocrinology, KU Leuven/University Hospitals Leuven

Copyright

© Gesquiere et al; licensee BioMed Central Ltd. 2014

This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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