I ve had two colonoscopys; one for chronic diarrhea and 3 years later one of my three stool samples tested positive for blood. Both times the colonoscopy showed funky white (according to the pictues) spots all over my colon. They did a biopsy and it was negative, but the second doctor asked if I took a lot of naproxin or Alleve, which I do. He said that s notorious for tearing up your colon. Is that true? Could it be anythig else like IBS or diverticulitis. Or something? I ve been avoiding Alleve for over a year, but my wrist and shoulder are both bothering me again.