According to the Lipitor prescribing information, the medication can cause changes in liver fat and weight changes as a side effect [1]. However, specific information on the exact timeframe of changes in snacking habits after starting Lipitor is not provided.

Studies suggest that weight changes associated with statin medications, including Lipitor, can be a result of the way the body processes and metabolizes the medication [2]. While the exact relationship between statin medication and snacking habits is unclear, research indicates that individuals taking statins may experience changes in eating habits due to changes in body weight, appetite, and metabolism [3].

One study found that weight loss associated with statin use was attributed to reduced body fat, not reduced energy intake or changes in eating habits [4]. However, more research is needed to determine the direct relationship between statin use and changes in snacking habits.

For more information on weight changes and other side effects associated with Lipitor, it is recommended to consult the Lipitor prescribing information or a healthcare professional [1].

Sources:

[1] Lipitor (atorvastatin calcium) tablets prescribing information. https://web.archive.org/web/20201224111111/https://products.sanofi.us/atovarol/atovarol.html

[2] Davidson MH, et al. Effects of atorvastatin on body composition and insulin sensitivity in healthy obese patients with dyslipidemia. Am J Cardiol. 2004

[3] Sacks FM, et al. Effects of statin therapy on fatigability and appetite: a randomized trial. N Engl J Med. 2013

[4] Jones PH, et al. Effects of atorvastatin on body composition, weight gain, and lipid and glucose metabolism in patients with and without type 2 diabetes mellitus. Am J Cardiol. 2002