Post I'm referring to is here
This study is the nail in the coffin against cholesterol. People simply having a genetically lower LDL (bad) cholesterol had "an 88 percent reduction in the risk of CHD." This takes into account all factors (weight, lifestyle, etc) because just having a lower LDL meant you were protected, regardless of all other variables.
Scrolling down to figure one on this study, we see that cholesterol is the only necessary factor to form plaques. You can be a smoking, stressed out, landwhale but if your cholesterol is low enough, you won't form plaques.
Taking a look at figures one and two of this study explains how cholesterol works. To summarize, if a person is already eating a lot of cholesterol, adding more cholesterol to this person's diet is going to produce little change on his/her blood cholesterol levels. But, if we remove all dietary cholesterol from the diet, blood cholesterol levels will plummet, as seen here.
Lastly, this meta-analysis of 395 studies shows that "replacing 60% of saturated fats by other fats and avoiding 60% of dietary cholesterol would reduce blood total cholesterol by about 0.8 mmol/l (that is, by 10-15%), with four fifths of this reduction being in low density lipoprotein cholesterol."
Heat disease is America's number one killer. Cholesterol is the problem. And by no means am I saying processed sugar is good for you, it's not.