<s>[INST] Today my doctor told me that I have a narrowing of the arteries in my brain stem and brain. He prescribed Lipitor. My other blood tests reveal perfect results so far. He found out about the arterial problem from an MRI that was done last year as a result of a concussion. Now I am really scared! I am a very active 65 in good physical condition. Lipitors side effects make me very nervous, but I do not know what to do. Is this a death sentence or what? [/INST] Hi and sorry to hear about the narrowing of these arteries and the troubling thoughts that this and the prescription and Lipitor have caused you. There are many people out there who take Lipitor and donate any of these side effects. You could be one of those lucky ones. Don't be scared but be brave to face them with a positive mental attitude. If the narrowing of these arteries was diagnosed a year ago, I will suggest that you get the MRI repeated and confirm that these findings are actually permanent or were simply changes associated with the brain concussion and also because you have no symptoms. Lipitor would be a good choice if there is already any narrowing and your doctor decides to get very aggressive at maintaining good blood lipid levels despite the considered normal values in individuals with not problems. Hope you find this helpful and informative. If you have more questions, I have answers, keep them coming. I wish you well and success with your treatment. </s>