Lipitor is a brand name for atorvastatin, which is a type of medication called a statin that is used to lower cholesterol levels in the blood [1]. High cholesterol levels in the blood can be caused by a high-fat diet, among other factors. Statins work by blocking an enzyme that the liver uses to produce cholesterol, thereby reducing the amount of cholesterol in the blood [2].

According to a study published in the Journal of the American Medical Association, atorvastatin was found to be effective in reducing LDL cholesterol levels, also known as "bad" cholesterol, in patients with high cholesterol levels due to a high-fat diet [3]. The study concluded that atorvastatin was a safe and effective treatment for high cholesterol levels in patients with a high-fat diet.

However, it is important to note that while medication can be effective in lowering cholesterol levels, a healthy diet and lifestyle changes are also important factors in maintaining healthy cholesterol levels. According to a cardiologist interviewed by Penn Medicine News, the keto diet, which is a high-fat diet, can lead to an increase in LDL cholesterol levels, which can increase the risk of heart disease [4]. Therefore, it is important to consult with a healthcare provider before starting any new diet or medication regimen.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1312230/
[3] https://jamanetwork.com/journals/jama/article-abstract/198738
[4] https://www.pennmedicine.org/news/news-blog/2019/april/a-cardiologists-take-on-the-keto-diet