Mixed
A high-fat, Western-style diet (HFD) causes systemic low-grade inflammation through gut dysbiosis, increased intestinal permeability (leaky gut), and subsequent translocation of lipopolysaccharide (LPS) into the bloodstream, which activates the TLR4/NF-κB inflammatory pathway.
Your diet directly shapes your gut bacteria. A diet high in fats, especially saturated and omega-6 fats, can damage your gut lining, allowing toxins (LPS) to enter your blood and trigger chronic inflammation. To protect your gut barrier, focus on reducing processed fats and increasing fiber-rich foods that support beneficial bacteria.
The consequences of excessive fat consumption (high-fat diet—HFD) comprise dysbiosis, gut barrier dysfunction, increased intestinal permeability, and leakage of toxic bacterial metabolites into the circulation. These can strongly contribute to the development of low-grade systemic inflammation.
Why this rating
Based on a narrative review of numerous animal and human studies, though specific clinical trial data is limited.
Source
High-Fat, Western-Style Diet, Systemic Inflammation, and Gut Microbiota: A Narrative Review
Ida Malesza et al. · Cells · 2021
DOI 10.3390/cells10113164
More from this paper
- Specific gut bacteria, particularly Akkermansia muciniphila and those producing short-chain fatty acids (SCFAs) like butyrate, protect gut barrier integrity and reduce inflammation, whereas HFD reduces their abundance.Good
- Lipopolysaccharide (LPS) translocation from the gut to the blood (metabolic endotoxemia) is a key driver of systemic inflammation, mediated by the TLR4 receptor, and is directly caused by HFD-induced gut barrier dysfunction.Good
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