Letter to the Editor Concerning Nutritional Deficiencies, Bariatric Surgery, and Serum Homocysteine Level: Review of Current Literature

  • Sílvia ParedesEmail author
  • Marta de Lurdes Fernandes Alves
  • Laura Virgínia Pereira Teixeira Ribeiro
Letter to the Editor

Dear Editor:

We would like to congratulate Komorniak et al. for their work regarding homocysteine metabolism and its changes after bariatric surgery [1].

Obesity has become a major global health challenge and its prevalence is alarmingly increasing [2, 3]. Bariatric surgery is widely accepted as the best treatment for obesity [4], and trends have shown an increased popularity of sleeve gastrectomy (SG) comparing with the Roux-en-Y gastric bypass (RYGB) [4]. Nevertheless, it is more frequent to find reporting on nutritional status in RYGB than in SG studies. In the study of Komorniak et al., although homocysteine levels were assessed after bariatric surgery, only 73 SG patients were included (and 1190 patients for RYGB) [1].

Obesity is consistently and strongly related with a higher risk of CVD incidence and mortality [5], and homocysteine has been recognized as an independent risk factor for cardiovascular diseases [6]. Thus, changes in homocysteine levels after bariatric surgery may...


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Conflict of Interest

The authors declare that they have no conflict of interest.


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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Endocrinology DepartmentHospital de BragaBragaPortugal
  2. 2.Department of Public Health and Forensic Sciences, and Medical Education, Medical Education UnitFaculty of Medicine of the University of PortoPortoPortugal
  3. 3.I3S-Instituto de Investigação e Inovação em SaúdeUniversidade do PortoPortoPortugal

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