"If 1% is good for you, think how much better "whole" milk must be."
I've never had my blood checked but I drink an average of 4 gallons of whole milk a week and am going strong at 67.
Not to scare you or anything, but a great deal of heart diseases have absolutely no symptoms prior to the first heart attack or stroke. Lesions can develop in the arteries with you feeling absolutely fine and seeming to be in great health. (Though of course, if you exercise regularly, that's a fantastic way of decreasing your overall risk, but genetics, diet, etc. all play a role and it's impossible to tell which has the most effect.)
It's never a bad idea to get your blood checked, because the levels of cholesterol, CRP, and other things in your blood will tell you definitively what your current risk of cardiovascular disease is, and the best part is that you can usually dramatically alter these levels and your subsequent risk just through simple lifestyle changes (i.e. no drugs).
Regards!