My husband has had a chronic stomach ache for the last 6 years that he thinks is an enzyme imbalance, he has had all kinds of tests - cardiology, neurologic, gastrointestinal, vascular and has had no relief. When he does any exercise he gets instant heartburn and in the past 2 years he has experienced brain fog and his perceptions become irrational. We are really at lose as to what other physician, naturopath, holistic measures to pursue - ideas?