I was advised to take statins and they prematurely aged me with muscle loss, nerve problems, cramps and many other side affects. I couldn't climb into my own aircraft and wouldn't fly because of sudden cramp in the legs. After stopping I notced an immediate improvement but estimate that it has taken me a full 2 years to get rid of the after effects.
I am fitter now than I was 10 years ago and at age 75 hope to continue flying for at least another 5 years.