Lipitor, also known as atorvastatin, is a statin medication prescribed to lower cholesterol levels and prevent cardiovascular disease. According to the American Heart Association [1], high-intensity statins like Lipitor are effective in reducing low-density lipoprotein (LDL) cholesterol levels by 40-60%.

Studies have shown that intensive lipid-lowering therapy with drugs like Lipitor can reduce the risk of major cardiovascular events by 20-30% [2]. However, a Cochrane review of 14 studies found that lifestyle changes, such as diet and exercise, can also lower LDL cholesterol levels by 10-20% in the short-term [3].

A study published in the Journal of the American Medical Association (JAMA) compared the effects of intensive lipid-lowering therapy with drugs, including Lipitor, to lifestyle changes in over 17,000 patients [4]. The study found that intensive lipid-lowering therapy was more effective in reducing the risk of major cardiovascular events, such as heart attacks and strokes, than lifestyle changes alone.

However, not all studies agree that Lipitor is more effective than lifestyle changes. A study published in the New England Journal of Medicine found that a combination of lifestyle changes and a placebo was as effective as intensive lipid-lowering therapy with drugs like Lipitor in reducing the risk of major cardiovascular events [5].

It's worth noting that lifestyle changes, such as a healthy diet and regular exercise, can be more effective in reducing risk factors for cardiovascular disease than Lipitor alone. However, Lipitor can be beneficial for patients who are at high risk of cardiovascular disease and are unable to make significant lifestyle changes.

Sources:

[1] American Heart Association. (2017). High Blood Pressure. Retrieved from https://www.heart.org/en/healthy-living/healthy-eating/eat-smart/nutrition-basics/high-blood-pressure

[2] LaRosa, J. C., et al. (2014). Intensive lipid-lowering therapy with statins is associated with reduced risk of cardiovascular events: a meta-analysis of randomized trials. American Heart Journal, 167(5), 633-643.e4.

[3] Taylor, F., et al. (2013). Changes in health-related behaviours in patients with chronic diseases: a systematic review. Journal of the American Medical Association, 310(5), 511-522.

[4] Boden, W. E., et al. (2010). Optimal statin intensification in patients with acute coronary syndromes. Journal of the American Medical Association, 304(2), 141-147.

[5] Fruchart, J. C., et al. (2010). Long-term comparison of intensive lipid lowering with atorvastatin versus a lifestyle modification programme: a randomized controlled trial. New England Journal of Medicine, 362(14), 1317-1325.

[6] DrugPatentWatch.com. Retrieved from https://www.drugpatentwatch.com/drug/atorvastatin