Research
Mixed
Rapid diet-induced weight loss in NAFLD patients is associated with decreased gut microbial diversity and specific shifts in bacterial abundance, including increased Prevotella_9 and decreased Phascolarctobacterium.
Rapid weight loss changes your gut bacteria, specifically reducing overall diversity and shifting the balance of certain species. While this is a normal response to dietary change, the long-term health implications of these specific shifts (like increased Prevotella_9) are not yet fully understood.
ModerateSupportsMEDIUM confidence
BMI change was associated with decreased stool microbial diversity (coefficient = 0.17; Shannon Index), increased abundance of Prevotella_9 (Bacteroidetes; coefficient = 0.96) and decreased abundance of Phascolarctobacterium (Firmicutes; coefficient = -0.42) (both Ps < 0.05).
Why this rating
Small sample size (n=11 for microbiome), observational proof-of-concept.
Source
Dynamics of hepatic steatosis resolution and changes in gut microbiome with weight loss in nonalcoholic fatty liver disease
Jaideep Behari et al. · Obesity Science & Practice · 2020
DOI 10.1002/osp4.476
cohort · n=14Cited 12×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
Related findings · Mixed
- Bariatric surgery (VSG and RYGB) is the most effective and sustainable treatment for obesity, producing marked and sustained weight loss that non-surgical interventions cannot match.Strong
- Severely protein-deficient diets (2–3% energy) induce lean body mass loss and metabolic imbalance, whereas adequate protein intake (0.66 g/kg/d minimum) is a prerequisite for maintaining muscle, bone, and physiological function.Strong
- For patients with Class III obesity (BMI >39.9 kg/m2), metabolic bariatric surgery (MBS) is significantly more effective than any currently approved medication, with BilioPancreatic Diversion (BPD) showing the highest estimated weight loss.Strong
This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →