As for it being vastly overestimated I couldn't be cofident in agreeing with that statement.
Yeah, I agree I didn't say that very well. I think most people have a healthy approach to minimising the risks, but there are some groups of people who overestimate how likely it is to happen, I mean the people who take the approach that if you have any exposure to any risk factor at all, you WILL be affected adversely, as opposed to thinking that you are increasing your risk, which is a more realistic.