Abstract
The relationship between postoperative dietary intake and weight loss after bariatric surgery remains unclear. We performed a systematic review and meta-analysis of studies published between January 2000 and May 2023, reporting weight loss outcomes, and dietary intake before and after Roux-en-Y gastric bypass and sleeve gastrectomy. A total of 42 studies were included. There was no detectable difference in dietary intake between the two procedures. Roux-en-Y gastric bypass induced an average decrease in energy intake of 886 kcal/day at 12-month post-surgery; however, there was no correlation between daily energy intake and weight loss. These findings show a substantial reduction of energy intake in the first year after bariatric surgery but do not support a link between lower energy intake and greater weight loss. Graphical Abstract: (Figure presented.)
| Original language | English |
|---|---|
| Pages (from-to) | 3021-3037 |
| Number of pages | 17 |
| Journal | Obesity Surgery |
| Volume | 34 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - Aug 2024 |
Keywords
- Bariatric surgery
- Dietary intake
- Macronutrient
- Metabolic surgery
- Micronutrient
- Nutritional intake
- Roux-en-Y gastric bypass
- Sleeve gastrectomy