From BMJ 18 Jan 2020
An Australian study looked at how 1,000 community living Australians aged between 70 and 90 got on with memory and cognition tests over a six year period.
It found no differences between people who took statins and those who had never taken them. If anything, statin use reduced decline in memory especially in those with heart disease or who were carriers of apolipoprotein E4.
Magnetic resonance imaging of some of the group detected no effects of statins on total brain volume or on hippocampal or para-hippocampal volumes.
BMJ 2020; 368:m52