It's best to talk to a doctor or dietician to make sure you're getting complete nutrition. But some gluten-free whole grains include corn, amaranth, quinoa (though technically a seed), and some other ones. But I'm not a medical professional, and I certainly didn't mean to raise alarm. I only meant that good nutirtion is important for mental health, because some deficiencies can mimic depression or anxiety. If this is a concern for you, it would be a good idea to head to your primary for a complete blood count and general physical.