The present invention is directed to a method of preventing or treating a gastrointestinal condition in a subject, that includes administering one or more branched chain fatty acid to the subject under conditions effective to prevent or treat the gastrointestinal condition in the subject. In general, branched chain fatty acids, in accordance with the present invention, may be non-esterified fatty acids or covalently linked to a lipid, including wax esters, sterol esters, triacylglycerols, or any other lipid-related molecular species, natural or artificial. The branched chain fatty acid can be a C11 to C26 branched chain fatty acid and mixtures thereof.
