International Journal of Colorectal Disease

, Volume 29, Issue 2, pp 253–260

Does bariatric surgery change olfactory perception? Results of the early postoperative course

  • Christian Ferdinand Jurowich
  • Florian Seyfried
  • Alexander Dimitris Miras
  • Marco Bueter
  • Jana Deckelmann
  • Martin Fassnacht
  • Christoph-Thomas Germer
  • Andreas Thalheimer
Original Article

DOI: 10.1007/s00384-013-1795-5

Cite this article as:
Jurowich, C.F., Seyfried, F., Miras, A.D. et al. Int J Colorectal Dis (2014) 29: 253. doi:10.1007/s00384-013-1795-5

Abstract

Purpose

Changes of food preference toward foods with low caloric density have been demonstrated after bariatric surgery and may contribute to sustained body weight loss. It has been hypothesized that olfactory perception as an integral part of food selection might be altered after bariatric surgery.

Methods

Sniffin’ Sticks® were used to investigate the olfactory perception of morbidly obese patients undergoing either Roux-en-Y gastric bypass (RYGB, n = 15) or sleeve gastrectomy (SG, n = 15) before 1, 6, 12, and 24 weeks after surgery. Obese patients without surgical intervention served as controls (CG, n = 12). Results are presented using the testing odor threshold, discrimination, and identification score (TDI; higher scores indicate better olfactory perception). Body weight loss was recorded.

Results

Initial BMI of the SG group (56.04 ± 7.096 kg m−2) was higher compared to the BMI of the RYGB (48.71 ± 6.49 kg m−2) and CG (50.35 ± 6.78 kg m−2); p = 0.011. Body weight loss among the surgical groups was not different (p = 0.011) while controls did not lose weight. Mean baseline TDI scores were significantly lower in the SG group 27.1 ± 3.9 vs. 32.6 ± 3.6 (RYGB) and 32.1 ± 5.3 (CG), respectively, whereas there were after 24 weeks no changes in RYGB and CG patients; the TDI score in the SG group increased significantly to 31.1 ± 3.5 (p < 0.01).

Conclusions

Our data suggest that a substantial body weight loss per se does not affect olfactory perception. However, our results point towards improved olfactory perception after sleeve gastrectomy but not Roux-en-Y gastric bypass.

Keywords

Bariatric surgery Olfaction TDI score Sniffing sticks Olfactory perception 

Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Christian Ferdinand Jurowich
    • 1
  • Florian Seyfried
    • 1
  • Alexander Dimitris Miras
    • 2
  • Marco Bueter
    • 3
  • Jana Deckelmann
    • 1
  • Martin Fassnacht
    • 4
  • Christoph-Thomas Germer
    • 1
  • Andreas Thalheimer
    • 5
  1. 1.Department of General, Visceral, Vascular and Paediatric SurgeryUniversity Hospital of WürzburgWürzburgGermany
  2. 2.Section of Investigative Medicine, Division of Diabetes, Endocrinology and Metabolism, Imperial College LondonHammersmith HospitalLondonUK
  3. 3.Department of Surgery, Division of Visceral and Transplantation SurgeryUniversity Hospital ZurichZurichSwitzerland
  4. 4.Department of Internal Medicine I, Endocrine UnitUniversity Hospital of WürzburgWürzburgGermany
  5. 5.Department of SurgeryRoMed Klinik Bad AiblingBad AiblingGermany

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