Involved in the suppression of bile acid biosynthesis through down-regulation of CYP7A1 expression, following positive regulation of the JNK and ERK1/2 cascades. Stimulates glucose uptake in adipocytes. Activity requires the presence of KLB and FGFR4. {ECO:0000269|PubMed:12815072, ECO:0000269|PubMed:16597617, ECO:0000269|PubMed:17623664, ECO:0000269|PubMed:19085950}. This is the function of ENSG00000162344 (FGF19, fibroblast growth factor 19).