Lipitor, a medication commonly used to treat high cholesterol, has not been directly linked to weight loss. Its primary function is to lower the levels of "bad" cholesterol and increase the levels of "good" cholesterol in the body [1].

The effect of Lipitor on weight loss in the context of a low-fat diet is also not explicitly stated in the available information. While a low-fat diet can contribute to weight loss, there is no evidence to suggest that Lipitor enhances this effect [2].

It's important to note that weight loss should be pursued through a balanced diet and regular exercise, under the guidance of a healthcare professional. Any significant changes in weight while on a specific medication like Lipitor should be reported to a healthcare provider [3].

In conclusion, while Lipitor is effective in managing cholesterol levels, it does not directly affect weight loss, including in low-fat diet scenarios.

Sources:
[1] "What is Lipitor?". Mayo Clinic. <https://www.mayoclinic.org/drugs-supplements/lipitor-oral-route/description/drg-20064541>.
[2] "Low-fat diet". Mayo Clinic. <https://www.mayoclinic.org/healthy-lifestyle/nutrition-and-healthy-eating/in-depth/low-fat-diet/art-20045751>.
[3] "Lipitor (atorvastatin)". DrugPatentWatch.com. <https://www.drugpatentwatch.com/drugs/lipitor>.