I remember reading a few years ago that GPs were saying that EVERYONE over a certain age (50's?)should be prescribed statins, regardless. Why?!
I'm not on statins, but had a similar experience to TheoddBird in relation to blood pressure pills. I was prescribed them, and they made me feel absolutely awful, lethargic, tired, slow to react when driving, and I suddenly put on a lot of weight. I compared notes with a friend on the same brand of medication. Her blood pressure was much higher than mine, yet was on a much lower dose. I went home and gradually halved my dose and then left them off altogether and didn't bother renewing the prescription. On a visit to the GP in later years, it seems I suffer from white coat syndrome, so that subsequent readings at a single visit to the GP got higher and higher. The blood pressure pills episode was in my 30's, and now in my mid 60's it seems I am fine without a hastily prescribed unnecessary medication, or one at an inappropriately high dose.