<prompt> Answer this question truthfullyWhat does high-density lipoprotein mean?  <response>: <reason> High density lipoprotein HDL is considered good cholesterol as its levels are inversely proportional to CAD. It is regarded as a positive cardiac risk factor if the levels are below 35 mgdL or total cholesterol to HDL ratio in 5.0 in men or total cholesterol to HDL ratio in 4.5 in women. When the levels are above 60 mgdL it is considered a negative cardiac risk factor.Causes Causes 