IL10 and schizophrenia: Previous meta-analyses and original studies have shown that the levels of certain pro-inflammatory cytokines (e.g., IL-1β, IL-2, IL-6, TNF-α) are significantly higher in patients with schizophrenia compared to healthy individuals, while the levels of anti-inflammatory cytokines, such as IL-10, are often decreased—or, conversely, elevated—as a reflection of compensatory mechanisms [15,16,17,18,19,20].