Dietary supplements and bariatric surgery

Amin Gasmi, Geir Bjørklund, Pavan Kumar Mujawdiya, Yuliya Semenova, Alexandru Dosa, Salva Piscopo, Joeri J Pen, Asma Gasmi Benahmed, Daniel Ovidiu Costea

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Bariatric surgery or weight loss surgery has been in practice for achieving significant weight loss in patients who have failed to achieve weight loss after pharmacological interventions. The rising cases of obesity are a triggering factor for more bariatric surgeries worldwide. Interestingly, sustained weight loss achieved post-bariatric surgery offers metabolic advantages, and patients show improved glucose and lipid metabolisms. Bariatric surgery is directly linked to higher incidences of vitamin, mineral, and trace element deficiencies, thus making patients susceptible to anemia, osteoporosis, and cardiomyopathy. Reduced nutrient absorption capacity, dietary changes, dietary restriction, and altered gastrointestinal tract morphology are some reasons for nutritional deficiency observed in post-bariatric surgery procedures. Micro-and-macronutrient deficiency observed in patients during the postoperative phase requires continuous monitoring of nutritional parameters. Therefore, adequate multivitamin and mineral supplements become essential to prevent/overcome micronutrient deficiencies. Bariatric surgery also raises the risk of small for gestational age (SGA) babies. Hence, a 12 - 24 months gap is recommended between bariatric surgery and pregnancy to achieve desired weight loss targets. The topic of this review is the impact of bariatric surgery procedures on vitamin and mineral absorption and the role of dietary supplements in maintaining a healthy nutritional balance during the postoperative phase.

Original languageEnglish
Pages (from-to)7477-7488
Number of pages12
JournalCritical Reviews in Food Science and Nutrition
Issue number25
Early online date15 Apr 2022
Publication statusPublished - 2023

Bibliographical note

Funding Information:
The author(s) reported there is no funding associated with the work featured in this article.

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© 2022 Taylor & Francis Group, LLC.


  • bariatric surgery
  • micronutrient deficiency
  • obesity
  • trace elements
  • vitamin supplements


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