I'm 36, white, male, 5'11" and 162 lbs. In best shape of my life. Have lost 30 lbs. over past 3 years. Was recently placed on 10 mg of Simvastatin (Zocor) for total cholesterol of 238, which runs in the family. My 3 month blood rest showed good results lowering cholesterol, but my blood sugar was 113. Had lots of coffee that morning, without sugar, as the nurse said I could. Then I read caffeine can raise. So I retested a few weeks later with a true fast, nothing but water, and got a 99 on blood sugar. Can this drug raise blood sugar? I've seen confilicting reports it may. When I was much heavier and not in as good of shape, my fasting blood sugar was in the 70s. Before the statin. I have no diabetic symptoms. In fact, I pee maybe at most 6 times a day, some days 3.
Some studies have found that statins raise blood sugar and/or risk of diabetes (e.g. the JUPITER trial results with Crestor / rosuvastatin, and a study titled "Simvastatin Improves Flow-Mediated Dilation but Reduces Adiponectin Levels and Insulin Sensitivity in Hypercholesterolemic Patients").
You did not specify whether your high total cholesterol was due to high LDL or high VLDL / triglycerides. If so, exercising care with dietary intake of specific kinds of fats (for LDL) or carbohydrates and alcohol (for VLDL / triglycerides) may help, which may allow you to reach healthy levels with less or no drugs. A higher muscle lower fat body composition can also help.
If it is just HDL that is high, that is healthy and it would not make sense to take drugs in the absence of other risk factors.
Note that diabetes is considered a huge risk factor for heart disease.