There may be a connection between overweight, high blood levels of saturated fat and fatty liver. It seems that overweight can cause high blood levels of saturated fat which causes chronic inflammation (see:
http://www.sciencedaily.com/releases/2009/11/091103121603.htm.
The high blood lipid levels would affect the liver, depositing fat there. Crohn's seems to be characterized by fatty deposits in the gut and these deposits are both inflammatory and promote fatty liver. There is some question about
whether this mesenteric fat causes Crohn's or is a result of Crohn's - likely it is a bit of both. These deposits are not the usual fat, but are wrapped around the gut and penetrate it. In cases that have required resection, 100% of the patients have shown this fat wrapping and the extent of the fat co-related with the degree of inflammation. For more, see:
http://www.practicalgastro.com/pdf/June06/ArsenescuArticle.pdfAnthocyanins are know to help reduce inflammation associated with fat deposits, but it is not established if they would help fatty Crohn's deposits. For more, see:
http://www.liebertonline.com/doi/abs/10.1089/jmf.2008.0270