Unfortunately, lowering cholesterol does not reduce mortality. There may be a tiny benefit for heart disease, but it increases the risk of cancer. So, there is no benefit for being on statins for most people unless they have already had a heart attack.
The side effects of statins can be severe, including alzheimer like symptoms of memory loss and pain around the body. There is a thread in here about the benefits and bad side effects of statins. Over 50% of people who have tried them have a negative reaction and stopped taking them.
Heart attacks are not related to cholesterol levels. In the U.K. people who have heart attacks have lower cholesterol than average. This is the reverse of what many doctors think. Cholesterol is an essential component of every living cell. It is used to repair the body. The problem is inflammation in the arteries which cholesterol is trying to repair. This inflammation can be caused by carbs, especially grains. Cholesterol is like a fire engine trying to put out fires. Wherever you see a fire, you see the fire brigade, but it is not them that created the fire in the first place.