Answer
LDLs and HDLs are actually proteins that carry fat and cholesterol throughout the body. LDLs are "bad" because they are "full" and cannot carry anymore fat or cholesterol. HDLs "good" because they are empty and available to carry more fat and cholesterol.
Work Step by Step
LDLs and HDLs are actually proteins that carry fat and cholesterol throughout the body. LDLs are "bad" because they are "full" and cannot carry anymore fat or cholesterol. HDLs "good" because they are empty and available to carry more fat and cholesterol.