More infoPeople are encouraged to be vigilant for signs of a silent killer condition that can appear on three parts of the body. High cholesterol indicates an excess of a fatty substance known as cholesterol in your blood. High cholesterol is particularly perilous as it can remain a "hidden" risk, as it does not typically display symptoms. The British Heart Foundation (BHF) explains: "There are usually no symptoms of high cholesterol. However, in some cases, an individual could notice signs in three parts of their body that are caused by high cholesterol.