Surprisingly, I also have very low blood cholesterol levels -- many physically fit people with healthy eating habits have several times higher levels.
Yeah; your cholesterol levels are controlled by your liver. GGP comes off to me as being a dietary fanatic, the likes of which I've seen all too often, and they're kind of annoying because they play armchair general about what everybody shall and shall not eat, meanwhile their knowledge of biology and chemistry tends to be really bad, just like GGP's appears to be (or at least, a very VERY bad understanding of what diabetes is.) I remember one dietary fanatic telling me how his cholesterol was high, so he decided to become a vegetarian. I don't know whether or not he solved that problem, but if he did the vegetarian diet had very little to do with it, but he's just going on being smug anyways. (In fact the Harvard Study vegetarians frequently cite about read meat being "bad" doesn't actually suggest this, instead it shows a link between people with uncontrolled diets and various diseases...but interestingly it also suggests a link between vegetarian diets and high cholesterol, which they never acknowledge.)
In fact, in recent years we've found that dietary cholesterol has very little impact on blood cholesterol, and may even have no impact at all. What we have found to influence it is saturated fats; less of them will reduce your blood cholesterol. More unsaturated fats will also reduce it (i.e. omega-3.) Exercise also effects it. However dietary changes and exercise have been only found to reduce blood cholesterol by about 30% in the best case scenarios. Beyond that, statin therapy is very effective. People who claim to be "naturalists" (ironically none of them can seem to even agree what the word "natural" means) often tell me how I shouldn't be taking these pills, but I take lovastatin and as a result my cholesterol levels are well within normal range whereas before that and my triglycerides were really high (typically tryglicerides are high when you take in too many calories, which given I am losing weight rather quickly rather quickly, that simply can't be the case; the liver doing something it isn't supposed to be doing however would explain it perfectly.) No side effects either.
GGP types also tend to be those anti-GMO, pro organic extremists, which are even more annoying because at the end of the day there is zero conclusive evidence against GMO, and zero evidence that suggests organic is in any way better than anything else (but it certainly costs more!)
Anywho, being overweight in general isn't a good thing, but if you don't have hypertension and some of the other issues that go along with it, you aren't really in danger of anything bad happening any time soon. The main reason I had to lose weight was due to reduced renal function, which was caused by another unrelated problem related to the immune system (specifically, IGAn, which nobody has ever been able to identify the cause of, and it isn't any more prevalent in overweight people than anybody else.) However reduced weight means reduced body mass, which means reduced need for filtration.