| ETH | the Expensive-Tissue Hypothesis |
| SCFAs | short-chain fatty acids |
| FFAR2 | free fatty acid receptor 2 |
| FFAR3 | free fatty acid receptor 3 |
| PYY | peptide YY |
| NPY | neuropeptide Y |
| GLP1 | glucagon-like peptide 1 |
| POMC | anorexigenic pro-opiomelanocortin |
| HDAC | histone deacetylase |
| CK2 | casein kinase II |
| Sp1 | specificity proteins 1 |
| Sp3 | specificity proteins 3 |
| GF | germ free |
| CV | conventional |
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