Animal study design. C57BL/6J mouse dams were fed SO-HF diets during pregnancy and lactation periods. All offspring were weaned at 3 weeks of age. Male offspring were fed one of the four diets (AIN93G, SO-HF, RBO-HF, or HOZ-HF) for 8 weeks and were sacrificed at 11 weeks of age. SO: soy bean oil, RBO: rice bran oil, HOZ: rice bran oil containing a high concentration of OZ, AIN93G: a diet containing 7% (w/w) SO as a fat source, SO-HF: a high fat diet containing 20% (w/w) SO as a fat source, RBO-HF: a high fat diet containing 20% (w/w) RBO as a fat source, HOZ-HF: a high fat diet containing 20% (w/w) HOZ as a fat source.