好像用猪油做的实验不多，找到一个动物实验。

大鼠实验：猪油+蛋黄危害心脏

http://www.ncbi.nlm.nih.gov/pubmed/11163625

综述：

Epidemiologic studies and randomized clinical trials have provided consistent evidence that replacing saturated fat with polyunsaturated fat, but not carbohydrates, is beneficial for coronary heart disease.

http://www.ncbi.nlm.nih.gov/pubmed/20711693