Fig. 4. The effects of a plant-based diet on the microbiome−gut−brain axis including the here reviewed effects on overall health, microbial composition and activity, behavior and cognition.

BMI body-mass-index, HbA1c hemoglobin A1c, LDL-cholesterol low-density lipoprotein cholesterol, Trp tryptophan, Tyr tyrosine. Images from commons.wikimedia.org, “Brain human sagittal section” by Lynch 2006 and “Complete GI tract” by Häggström 2008, “Anatomy Figure Vector Clipart” by http://moziru.com