Not as serious, admittedly, but I'm wheat intolerant.
It's a damn pain, because no matter how appetizing it looks, no wheat/gluten free product quite matches the real thing.
But you can get by, albeit at greater cost.
The problem I'm finding at the moment is the lack of fibre in my diet is causing daily constipation, which is leading to other issues.
I think my job (sitting at a desk for 12 hour shifts, hardly moving) doesn't help either, as my previous job involved constant walking around, and I didn't suffer as much.
In time, after lots of reading of food packets, you will have a good idea what you can and can't eat. But be prepared for some surprises at first.
A word of warning regarding bread...............there are a few loaves out there now, but many taste brick (like someone has dragged them along a gritty path first) but the ones that look and taste best, often fall apart as you take them out of the pack as there is no gluten to bind the mixture together. Massive air-holes also appear in the slices. I've thrown whole loaves away in frustration as they have been more holes than bread, so take your time to look at it before you buy. "Genius" is probably the best loaf. Most wheat free pasta is pretty edible these days.