High cholesterol (hypercholesterolemia) can be inherited, but it's often the result of unhealthy lifestyle choices, and thus preventable and treatable. A healthy diet, regular exercise and sometimes medication can go a long way toward reducing high cholesterol.
High cholesterol typically doesn't cause any symptoms. In the vast majority of cases, the only true symptoms it may cause are emergency events. For instance, a heart attack or stroke can result from the damage caused by high cholesterol over time. These events typically don’t occur until high cholesterol leads to the formation of plaque in your arteries.
All statins have been reported to be associated with adverse side effects, especially when administered at high doses2. These side effects include memory problems, sleeping issues, and, most commonly, that which is associated with muscle. For some, these muscle issues might just be minor. For others, however, statin use may come with more serious muscle problems, and this is catching some attention (see this post by Laura Newman)