Gut dysbiosis in severe mental illness and chronic fatigue: a novel trans-diagnostic construct? A systematic review and meta-analysis https://www.nature.com/articles/s41380-021-01032-1
Our findings suggest that gut dysbiosis may underlie symptoms of sickness behavior across traditional diagnostic boundaries. Future investigations should validate these findings comparing the performances of the trans-diagnostic vs. categorical approach. This will facilitate treatment breakthrough in an area of unmet clinical need. [...] Animal models showed that gut dysbiosis triggers a chronic low-grade pro-inflammatory status in the host by increasing the permeability of the gut barrier (“leaky gut”) and by facilitating the translocation of bacterial antigens into the bloodstream (“endotoxemia”) (Fig. 1) [5,6,7]. In both animals and experimental models in otherwise healthy subjects, endotoxemia **manifests with a range of flu-like symptoms (fatigue, anhedonia, loss of motivation), which most authors refer to as