Figure 3.

Gut microbiota’s (see red arrow) metabolites (derivates/conjugates) may be correlated with host’s health (see green arrow, such as 1,9-Nonanedicarboxylic Acid, methyl carboxylate, glycyl-L-valine, S-Carboxymethyl-L-cysteine, (Z)-3-hydroxyoctadec-11-enoic acid, 3 alpha 7 alpha-dihydroxy-5 beta-cholanic acid, and others) or those correlated with certain pathologies (see brown arrow, such as adrenic acid, arachidonic acid, cucurbit acid, carnosine, chenodeoxycholic acid-3-β-d-glucuronide, N-alfa-L-Acetyl-Arginine, N-propionyl-d-glutamine, α-Muricholic acid, and others) [53]. Credits: Original figure by I.A. Charitos.