It is impossible to connect your friend's recent activity (or lack of it) on their medication, but, from personal experience, Statins did not suit me.
I have never taken medications, my head needed to be explodind before I would even take an asprin, so I was relunctant when I was first prescribed Statins. I started to have bad sleep and was awake all night and then tired in the morning. I stopped taking them and told my doctor, who prescribed a different statin. They had the same effect. I stopped taking them, and the doctor wasn't happy.
By way of a compromise, I now get Statins on percription which I flush down the loo. I take more exercise and eat better, and my Cholesterol is down naturally. My doctor is happy because heis getting paid for supplying the statin, and Iam much happier not taking it.