Answer: sry i learned this when i was in fifth grade its the vascular system
Staying clean to prevent diseases/ bacteria from growing
A heart attack occurs when one or more of your coronary arteries become blocked. Over time, a coronary artery can narrow from the buildup of various substances, including cholesterol (atherosclerosis). This condition, known as coronary artery disease, causes most heart attacks.
If you want to check the amount of almost anything in your food product(assuming it is packaged) then you should then refer to the nutrition facts. you know, that little box of random words and stuff that everyone always ignores? That, my friend, is where to look :)