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. 2026 Mar 2;17:1702172. doi: 10.3389/fpsyt.2026.1702172

Figure 2.

Heatmap showing bacterial shifts across psychiatric disorders, with bacterial taxa listed vertically and disorders horizontally. Blue indicates increased, red decreased, and grey neutral or inconsistent changes in bacterial abundance per disorder.

Summary of bacterial shifts across major psychiatric disorders. The heatmap illustrates directionality of microbial changes (blue = increased abundance, red = decreased abundance, grey = inconsistent or neutral findings) across psychiatric conditions. Several taxa, including Bacteroides, Proteobacteria, and Lactobacillus, show disorder-specific alterations, while others such as Coprococcus display consistent reductions across multiple diagnoses, suggesting loss of anti-inflammatory bacteria may represent a transdiagnostic feature of psychiatric pathology. BD, Bipolar Disease; ASD, Autism Spectrum Disorder; SCZ, Schizophrenia; OCD, Obsessive-Compulssive Disorder; ADHD, Attention deficit hyperactivity disorder; AD Alzheimer Disease; AN, Anorexia Nervosa.