Go to any food store, cafe or restaurant these days and you should find gluten free options.
Gluten is a protein which is found in grains like rye and wheat but it doesn't agree with everyone. In fact it's estimated that up to 100,000 New Zealanders could have coeliac disease - and that many of them may not know it.
Testing for the condition is unpleasant for patients because it involves eating gluten - which makes them feel sick - putting a lot of people off.
But a gastroenterology study at Australia's Walter and Eliza Hall Institute, has led to a new discovery. Associate Professor Jason Tye-Din talks to Kathryn Ryan about a simple blood test under development and what it could mean for sufferers.