The Gut/Brain Connection and symptoms that could be related to both.

Chronic headaches, sinus infections and allergies are usually traced to the gut.  When the gut becomes inflamed, due to exposure to certain foods, bacteria or other toxins, it releases cytokine messengers to alert the rest of the immune system that it's under attack. These other tissues can then respond with inflammation and symptoms that you would never guess originated in the gut.  Treat the gut...heal the brain (along with many other tissues and organs).