Currently it seems your body is being nice to you. That can and often does change when people hit their mid 30's to early 40's, which can really hit people very hard if they spent four decades eating what they want when they want.
Cholesterol and body weight are not the only indicators of health issues related to food though.
To be completely wicked - someone could have perfect cholesterol, be super thin and never exercise etc. while eating mass quantities of food and even junk food. Just to bad that nobody checked to see if they had worms or other "friends" living inside of them.
