about cholesterol ,please help me?

1-if some one is consuming too much of cholesterol can he be fat,or being fat and being cholesterol could be?
2 different things?
2- so it is possible that a person can be thin/slim but have high cholesterol?
3-are there any visible signs to determine that you have high cholesterol is being fat one of them or that could not be the case,as cholesterol will make blood thick,am i right?
4-so its mean you never know unless go to test that you have high cholesterol same for blood pressure and deities ?
5-do our body need cholesterol if yes for what?
6-cholesterol can only cause you heart attack? right or wrong or there can be any other disease form it
thanks for the help

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