High-density lipoproteins (HDL) are the good kind of cholesterol. HDL helps clear the bad cholesterol, low-density lipoproteins (LDL), from your blood and keep it from clogging your arteries. High levels of HDL (60 or above) can protect you from a heart attack.
HDL levels:
Changes in the way you live can raise your good kind of cholesterol. Things you can do to help raise your HDL levels include:
WebMD Medical Reference from Healthwise