As I continuously repeat in my posts, antibiotics destroy the ecosystem of the gut. This is repeatedly demonstrated by research. By destroying the ecosystem, they also reduce the diversity of the intestinal flora/bacteria. Studies have shown that a 5-day or 7-day course of antibiotics will wipe out the 100 trillion organisms/bacteria of the gut, leaving only...http://candidaplan.com/blog/419/antibiotics-a-pathway-to-colon-cancer/