In conclusion, dietary CAP regulated the structure and the relative abundances of some key microbial species, such as Ruminococcus and Prevotella, to improve intestinal health, which in turn increased the levels of the monoamine neurotransmitter 5-HT, and reduced the levels of inflammatory cytokine TNF-α in LPS-induced mice with depression-like behaviors. The gene discussed is TNF; the disease is depressive symptom measurement.