I have been really sick for 4 months lost alot for weight, always have nausea. Also lose of appetite and just fell really sick. Have had all stomach and gallbader test and all came back good. Today I had a colonocosy that showed 1 polyp, and doc said it was not cancerous, but is still testing it. I have heard that a toxic colon can make yoy very ill. I was wondering if a colonocopy would show a toxin colon. Or is there toxins that they cant see that can make yoy ill? I also thougt I could have parsites, but never came up. I am only 19 and right before this all happend I went under alot of stress. I beleive stress had something to do with it, but my problems just keep getting worse.