Hi Jo, welcome to the forum - Gosh, I hope Mark can get help from some other source (Diabetic team at hospital/GP surgery??) as his GP sounds like a total cretin. It's only since joining this forum that I've realised how uncaring some folk in the 'caring' profession can be.
Hope you find the pages on here helpful, please always ask if you need to know anything - someone will be able to help, or guide you in the right direction to find an answer.
xx