Leaky Gut Syndrome (LGS) is a disorder which allows partially digested foods, toxins and bad bacteria to pass though the small intestine and into the blood stream. This event compromises the liver, the lymphatic system, and the immune response including the endocrine system. According to an article from the Diagnostic Laboratory, formerly known as Great Smokies, now known as Genova Diagnostics written by Jake Paul Fratkin, OMD, (LGS) is often the real basis for chronic fatigue syndrome and pediatric immune deficiencies. It is believed to be the primary cause of the following common conditions: asthma, food allergies, chronic sinusitis, eczema, urticaria, migraine, irritable bowel, fungal disorders, fibromyalgia, and inflammatory joint disorders including rheumatoid arthritis. It also contributes to PMS, uterine fibroid, and breast fibroid. 

Leaky Gut Links:
What is Leaky Gut Syndrome  Digestive System Diagram and information
BREAKING THE VICIOUS CYCLE   BY LEO GALLAND, M.D.