Do you have many little ones with food intolerances/allergies?

One who started with me just over a year ago has a dairy allergy, but that's fairly easy to manage - especially because he only has breakfast and lunch here, not tea.

Another mum has just told me that her little one is going to be coming off gluten. I don't know anything about a gluten free diet. Obviously I'll read up on it and chat to mum, but do you have any experience? Is it expensive?

Mum is going to provide his food next week as it is short notice.