I have been to many specialist about my allergies. The bottom line has always been my immune system needed to be stronger. A healthy diet, lots of exercise, and dental work. Your dental health is very important to your immune system. I didn't have any dental problems that I knew of. But I had tiny bleeding and that was a sign of infection that lowered my immune system. Once my dental health was corrected I started to feel better I didn't know how run down I did feel because it was so gradual. My immune system started to get stronger and it has made a big difference. I still have allergy but not severe anymore. In fact now my allergy is mostly annoying instead of miserable.