Taking zinc when your body doesn't digest and absorb it properly can affect you negatively. Just taking zinc doesn't remove the deficit you may be having. If you eliminate excessive zinc from the body it may be due to an underlying low grade inflammation in the GI tract, liver and kidneys. To help restore balance in the body and brain/nervous system, the main organs of elimination should be thoroughly cleansed, before even attempting to supplement. Both migraines and viral infection don't originate in the head, but in the GI tract, especially the colon. Chronic fatigue results from chronic digestive problems. Viral penetration is impossible in an alkaline environment, but easy in an acidic terrain. As long as the bile ducts of the liver are clogged up, which impairs digestive functions, your body will be acidic and attract or generate germs that try to break down or decompose weak, damages cells or accumulated waste material. Diet and lifestyle play a major role in all that as well. I recommend that you study the book, Timless Secrets of Health & Rejuvenation (www.ener-chi.com) and follow the basic cleansing procedures as well as the dietary/lifestyle changes to support the body's healing. Your body is always eager to heal itself, but if it doesn't do so it is because some of the main ducts or channels of cirulation and elimination are clogged up. It is certainly in your power and ability to open uf these ducts, especially the GI tract.
With kind regards,