what if traffic vessels where like the blood vessels of a human body? as much as coronary diseases are provoked by ldl, or bad cholesterol, as it is called, traffic problems are also caused by a sort of bad fat that i called traffic cholesterol. they are the bad drivers that block ways and prevent car traffic of flowing like it should. get to know all nine kinds of traffic cholesterol and make fun of your friends that fit in any category. this book is a very suitable present to warn about the problem and have a laugh at the same time.