I GET EVERY VIRUS THAT BODY COMES IN CONTACT WITH, IN MY STOMACH AND INTESTINES...Its awful! THE NAUSEA, BLOATING, AND GAS!!! I have a weakened immune system...I cant even go to a restaurant and eat ANY lettuce because i get parasites easy too...I know its parasites or viruses because of my symptoms of nausea, bloating, upset stomach, and gas...I was tested for food allergies which were negative. How can i strengthen my immune system? I already take loads of Vitamins and they dont do a dam thing for me..please please help me! I am just at my desperate level now...