Cholesterol Balance

I can help you answer this question for my science courses and im really stuck because when the class is what I was doing extra science.
I do not know how or what that word, im really stuck.
Please can you help
Thank you =]

ok, I'll try to explain a very simple way;
LDL (low density lipids) is also known as bad cholesterol - the type of fat from fatty foods and feeds with you cause it to increase your blood cholesterol. It also causes high BP and CAD (coronary disease). HDL (high density lipids), the other is the good cholesterol, helps lower blood fats. Fish oil and omega-3 is an example.
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