Hi Skippy - I fully understand and maybe I didn't make myself clear. I'm certainly not going to ignore my GP in favour of something I read on an Internet forum (no matter how good and knowledgeable all you people on here are).
However, I would be really interested to hear the background on this as it directly contradicts my situation. l don't think I need worry, but a bit more info would help me decide if I need to research further and then potentially have a discussion with my GP.