FASN and metabolic syndrome: In addition, HFD significantly decreased the levels of mRNA transcripts of genes involved in lipid anabolism, including Fasn and Elovl6 and L-arabinose significantly further decreased them (Figure 5C), suggesting that HFD-induced inhibition of fatty acid synthesis and the alleviation of HFD-induced metabolic syndrome by L-arabinose might be mediated by suppressing long-chain fatty acid synthesis in BAT too.