HDL: High Density Lipids: This cholesterol or "good cholesterol". It is called "good" because it protects against cardiovascular diseases. Scientist believe that having high levels of HDL cholesterol is beneficial, because if they “work” as garbage collectors around, travelling through blood collect "bad" cholesterol from the plates of blood vessels and they are transported to the liver to be destroyed by enzymes.

      The refore, high amounts of HDL are better. We have linked low levels of HDL (especially under 40) with an increase risk for heart disease, while values over 60, protect against these diseases.

      The Total Cholesterol is the sum of both.