Well, it's a concern. My cholesterol is high too; 6.4 when last tested. A lot of it is HDL because I'm active, so that's a good thing. My serum triglycerides are very low, which is also a good thing. I've never had my LDL tested - they rarely do, the quoted LDL figure is a simple subtraction of Total - HDL. If analysed, the LDL would split into fractions according to particle size - big fluffy particles being benign, small dense particles being the bad guys. Guess what makes the small/dense concentration go up? Yes that's right, insulin-spiking carbs (and presumably, excessive protein).
Half of all cardiac-event sufferers though A&E have normal cholesterol. Surely that wouldn't be the case if total cholesterol were the whole story, as in "Low is Good, High is Bad"?