Everyone always thinks bacteria is bad, but check out this website ....it should answer ur question http://drbenkim.com/articles-probiotics.html
All Bacteria in the body is helpful. Without it we wouldn't be alive. So yes all bacteria is helpful. I hope I helped!
true
Yes, because these bacteria are able to break down some components the human body cannot or to a further degree then the body can, so that we can absorb more nutrients and survive more efficiently.
yes