Wow, you've managed to make so many false assumptions about my original comment that I won't even bother to correct them all. Did you even read it thoroughly enough to comprehend my point? I guess not. Also have you ever heard of Broad-spectrum antibiotics? Yeah, those are nonselective.
Here are a few good links to read up on: http://www.sciencedaily.com/releases/2011/04/110419214734.ht... http://en.wikipedia.org/wiki/Gut_flora#Effects_of_antibiotic... http://www.naturalnews.com/042769_antibiotics_healthy_gut_fl...