This is a good educational video. Take note that the Americans use mg/dl to measure their cholestrol level. We are used to mmol/l. Approximately 40 mg/dl = 1 mmol/l. So if your cholestrol level is 5 mmol/l, it is about 200 mg/dl. The video recommends that people with history of heart diseases should keep their total cholestrol level to below 100 mg/l = 2.5 mmol/l.