Ann Clin Nutr Metab.  2023 Aug;15(2):51-56. 10.15747/ACNM.2023.15.2.51.

Changes in mineral and vitamin profiles after bariatric surgery in Korea: a before and after study

• Park JS
• Han SM

• KMID: 2545177
• DOI: http://doi.org/10.15747/ACNM.2023.15.2.51

Abstract

Purpose
Bariatric surgery induces nutritional deficiencies that require long-term monitoring and supplementation. This study aimed to evaluate the status of vitamins and minerals pre-operation and 2 years post-operation and to compare the findings according to type of bariatric surgery.
Methods
The study enrolled 302 patients who underwent bariatric surgery, adjustable gastric band (AGB), sleeve gastrectomy (SG), or Roux-en-Y gastric bypass (RYGB) between 2013 and 2017 in the CHA Gangnam Medical Center and the Seoul Medical Center, Korea. Minerals and vitamin status was assessed at baseline (pre-operatively) until 2 years after bariatric surgery.
Results
Mean age was 34.1±8.3 years, 256 patients (84.8%) were female, and mean body mass index was 35.3±5.7 kg/m² . Vitamin B1, vitamin B12, and folic acid levels were significantly different at 1 and 2 years after surgery compared to baseline. Hemoglobin, hematocrit, high-density lipoprotein, iron, calcium, and magnesium levels did not differ significantly during the study period.
Conclusion
Although enrolled patients had no clinical symptoms of nutritional deficiences, several indicators related to nutrition decreased at 2 years after bariatric surgery. Despite variations in the alteration of laboratory results across three surgical interventions, namely SG, AGB, and RYGB, a consistent reduction in fasting blood sugar was observed subsequent to the surgical procedures.

Keyword

Body mass index; Gastrectomy; Gastric bypass; Lipoproteins; Follow-up studies