i also wonder, with teri, if you could take some SR (slow release) niacin? if you work your way up on it and use SR that can help with the dreaded flushing. to me, the flushing is worth it knowing the help it's giving me, as i can't take statins either. the flushing only lasts 20-30 minutes. there is also a niacin product called Enduracin that is very helpful with the flushing. that should help a great deal with your cholesterol and LDL counts.
the other thing you mentioned is being on a low-fat, low-cholesterol diet. lots of research is showing that low-fat is not necessarily always a good thing - but what i mean by that is that you have to choose your fats carefully. it's been shown that certain oils, such as olive but more particularly canola may help lower cholesterol. ditto on foods such as some nuts, particularly almonds and walnuts. you don't want to overload on them, they are still high fat, but they are high in MONO fat, which is shown to help lower cholesterol (vs SAT fat which is a big no-no for us). look for mono fat items to include in your diet on occasion, like avacados, salmon, almonds, etc. like teri said, though, i'm not familiar with crohn's restrictions. i have terrible GERD, and have a hard time eating at all at the moment.
hope this helps.