What they all said. In addition, "slightly high" actually, if you look at the data, is MORE protective against heart attack than low. Looking JUST at total cholesterol, between 200-250 is most protective. The farther you go in either direction above or below that, the more dangerous it is.

In fact, in the famous Framingham study, the men who had heart attacks the youngest had very low cholesterol, and their heart attacks were usually fatal.