No! Cholesterols are fatty substances that are essential for human life. They are used as components in our cell membranes, natural steroids hormones (like estrogen and testosterone), and to help digest food.
The problem is that cholesterol, and the proteins that carry it around the body are associated with cardiovascular disease which can lead to things like heart attack and stroke. The low-density lipo-proteins (LDL) are often called bad cholesterol because they have been linked to damaging the arteries. Other cholesterol carrying proteins called high-density lipo-proteins (HDL) actually are associated with lower cardiovascular risk and may clean up some of the damage.