Mixed
High intake of long-chain fatty acids (LCFAs), particularly from saturated sources like palm oil and lard, increases the Firmicutes to Bacteroidetes ratio, leading to obesity, insulin resistance, and inflammatory bowel disease in animal models.
Limit high intake of saturated long-chain fatty acids (found in palm oil, lard, and large amounts of butter). These are linked to negative gut microbiota changes and metabolic issues in animal studies. Opt for unsaturated fats like olive oil (MUFAs) or fish oil (PUFAs) for better metabolic health.
However, the increase of the Firmicutes to Bacteroidetes ratio, including Actinobacteria, was recorded with LCFA-rich diets (34–72% of energy) fed to healthy animal models. Additionally, increased effects of obesity, adipose tissue, plasma cholesterol, total cholesterol, weight gain, hypertension, insulin resistance, inflammatory bowel diseases (IBD), nonalcoholic steatohepatitis (NASH) in the studied subjects occurred [66–69,72].
Why this rating
Based on animal models; human data is mentioned but less detailed regarding specific LCFA sources compared to animal studies.
Source
Fatty Acid Diets: Regulation of Gut Microbiota Composition and Obesity and Its Related Metabolic Dysbiosis
David Johane Machate et al. · International Journal of Molecular Sciences · 2020
DOI 10.3390/ijms21114093
More from this paper
- Dietary intake of monounsaturated fatty acids (MUFAs), particularly from extra virgin olive oil, increases the Bacteroidetes/Firmicutes ratio and reduces obesity, insulin resistance, and inflammatory bowel disease in animal and human models.Good
- Dietary intake of n-3 polyunsaturated fatty acids (PUFAs), such as EPA and DHA from fish oil, increases the Bacteroidetes/Firmicutes ratio and reduces obesity, insulin resistance, and inflammatory bowel disease, whereas n-6 PUFAs (like linoleic acid) may have the opposite effect.Good
- Dietary intake of medium-chain fatty acids (MCFAs) from sources like virgin coconut oil can increase the Bacteroidetes/Firmicutes ratio and reduce obesity and inflammatory bowel disease (IBD) in animal models, although high-concentration coconut oil diets may have the opposite effect.Moderate
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 →