A method for inhibiting a lipid metabolism disorder of a warm-blooded animal includes administering a therapeutically effective amount of a compound being one selected from the group consisting of phosphodiesterase 5 (PDE-5) inhibitors of the first type and second type and a Statin analogue to a warm-blooded animal suffering from the lipid metabolism disorder. The method may treat the disease selected from the group consisting of liver disease, non-alcoholic fatty liver disease, hyperadiposity, dyslipidemia, hepatic steaotosis, high-fat-diet-induced lipid accumulation, high-fat-diet-induced obesity, insulin resistance, high-fat-diet-induced lipid accumulation combined with a symptom of one of inflammation and liver damage, and any combination thereof.
