Most recent literature says oats are OK, but most people I know are remaining cautious.

Look for "clean" oats like McCanns Irish oats if you are going to reintroduce them, http://www.mccanns.ie/ , and watch closely for any symptoms.

Some people don't do well with any grains, and of course, some people may also have a separate sensitivity to oats. This is one of those sort of grayish areas.... that they continue to study.

You can search PubMed for a review of the literature~
http://www.ncbi.nlm.nih.gov/sites/en...d=&cmd_current=

Cara