In Terms of Nutrition, the Most Suitable Method for Bariatric Surgery: Laparoscopic Sleeve Gastrectomy or Roux-en-Y Gastric Bypass? A Systematic Review and Meta-analysis

Gu et al., 2020 | Obes Surg | Meta Analysis

Citation

Gu Lihu, Fu Rongrong, ... Jin Qiong. In Terms of Nutrition, the Most Suitable Method for Bariatric Surgery: Laparoscopic Sleeve Gastrectomy or Roux-en-Y Gastric Bypass? A Systematic Review and Meta-analysis. Obes Surg. 2020-May;30(5):2003-2014. doi:10.1007/s11695-020-04488-2

Abstract

This study assesses the differences in postoperative nutritional status between laparoscopic sleeve gastrectomy (LSG) and laparoscopic Roux-en-Y gastric bypass (LRYGB). We searched the literature from PubMed, Web of Science, Embase, and the Cochrane Library database. Twenty-nine articles were included, with a total of 5437 obese patients. After bariatric surgery, the LSG group had less anemia and iron deficiency anemia than the LRYGB group. The serum iron, ferritin deficiency, and vitamin B12 rates after LSG were lower than patients receiving LRYGB. And PTH and serum phosphorus concentration of patients after LSG were both lower than those after LRYGB. The postoperative results of LSG were better than that of LRYGB. Therefore, we recommend LSG for a better postoperative nutrition, but only for reference.

Key Findings

Therefore, we recommend LSG for a better postoperative nutrition, but only for reference.

Outcomes Measured

• Requires manual extraction

Population

MeSH Terms

• Bariatric Surgery
• Gastrectomy
• Gastric Bypass
• Humans
• Laparoscopy
• Nutritional Status
• Obesity, Morbid
• Postoperative Complications

Evidence Classification

• Level: Meta Analysis
• Publication Types: Journal Article, Meta-Analysis, Systematic Review
• Vertical: vitamin-b12

Provenance

• PMID: 32077060
• DOI: 10.1007/s11695-020-04488-2
• PMCID: Not in PMC
• Verified: 2026-04-09 via PubMed E-utilities API

Source extracted via PubMed E-utilities API on 2026-04-09