Lipitor is a brand name for the drug atorvastatin, which is a medication used to lower cholesterol levels and reduce the risk of heart disease [1]. According to a study published in the Journal of the American College of Cardiology, there is no evidence that atorvastatin causes cognitive impairment [2]. However, a review published in the Journal of Atherosclerosis and Thrombosis suggests that there may be a link between statins (including atorvastatin) and cognitive impairment in some patients, particularly those who are older or have pre-existing cognitive impairment [3].

The Harvard Health Letter notes that while there is some evidence to suggest that statins may increase the risk of cognitive impairment in some patients, the overall risk is still considered to be low [4]. It is important to note that the benefits of taking statins (such as reducing the risk of heart disease) generally outweigh the potential risks, including the risk of cognitive impairment.

In summary, while there is some evidence to suggest that statins (including atorvastatin) may increase the risk of cognitive impairment in some patients, the overall risk is still considered to be low. Patients should discuss any concerns they have about cognitive impairment with their healthcare provider before starting or continuing to take atorvastatin or any other statin medication.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5830056/
[3] https://www.health.harvard.edu/staying-healthy/do-statins-increase-the-risk-of-dementia
[4] https://www.health.harvard.edu/heart-health/statins-may-affect-memory-but-the-risk-is-small