Oil composition comprising 20-100 % by weight of wax esters, preferably 40-85% by weight of wax esters, wherein said wax esters consist of monoesters of predominantly mono- or polyunsaturated C16 to C22 fatty acids and predominantly monounsaturated C16 to C22 fatty alcohols for use as a medicament for the prevention or treatment of abdominal obesity and obesity related disease.