Hi thanks again for the replies. It's made interesting reading. I'd also posted this on UKC and it was much more civilised on here.

I think for the time being I'm going to keep eating my jelly babies. They are tasty and don't seem to be negatively effecting me. If I get clear evidence not to eat them, I'll stop.

Now if I can just figure out the correct pace to run at for each of my sessions I'll be well away!