My apologies for jumping to conclusions. You were writing for a general audience and I didn't know whether "cholesterol" in your comments referred to LDL, TC, or a more general measure that we don't test for. And thanks for explaining how statins affect the body's balance of cholesterol. This is indeed something doctors don't bother mentioning to patients.
It sounds like this is an issue I should pay attention to, and in the mean time see whether I can get excellent lipid levels with more dietary changes and less medication. I also wonder whether diet/supplementation could counteract or prevent negative brain effects (fish and phosphatidylserine?), but I doubt that has been studied.
Do you follow any doctors or researchers that publish for the public at a detailed level? I'd like to learn more but as I said, I don't trust myself to evaluate the studies directly. I find Peter Attia's stuff just over the line between interesting and dry, which is probably the right balance for me.
About your "fog lifting", I would have thought that these issues are chronic, not acute. Did you interpret what happened as your brain rapidly repairing issues, or that the meds caused you acute issues? The former possibility makes me wish someone would study the effects of cycling statins--if for no other reason than to rule out a potential good therapy.