Hormonal
Bariatric surgery (Roux-en-Y gastric bypass and sleeve gastrectomy) causes a significant decrease in fecal straight short-chain fatty acids (SCFAs), including acetate, propionate, butyrate, and valerate, likely due to altered dietary intake and microbiota fermentation.
If you have had bariatric surgery, expect your gut bacteria to produce fewer beneficial fatty acids (SCFAs) like butyrate. This is a normal physiological change due to the surgery and dietary shifts. To support your gut health, focus on the recommended post-surgical diet, which emphasizes protein and gradually reintroduces fiber-rich foods as tolerated, under the guidance of your healthcare team.
All profiled straight SCFA significantly decreased by 27% from pre- to post-surgery (p = 0.019), specifically acetate (p = 0.037), propionate (p = 0.018), butyrate (p = 0.023), and valerate (p = 0.032)
Why this rating
Small sample size (n=22) and single-center design limit generalizability, though the statistical significance is clear within the cohort.
Source
Alterations in Fecal Short-Chain Fatty Acids after Bariatric Surgery: Relationship with Dietary Intake and Weight Loss
Jennifer L. Meijer et al. · Nutrients · 2022
DOI 10.3390/nu14204243
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