Some animal studies showed that using diets including soluble fiber (oat bran) helped eliminate the C-diff infection sooner than a diet with insoluble fiber (wheat bran). Foods high in soluble fiber include: oats and oat bran, oatmeal, beans, peas, carrots, barley, citrus fruits, strawberries and apple pulp.
Similarly, it is easier for oxygen to gain 2 electrons instead of loosing 6 electrons: Oxygen Ion. The two gained electrons (purple dots) means that this oxygen ion has 10 electrons (-10 charge) and only 8 protons (+8 charge), giving the ion a net charge of -2. Symbolically, we can represent this oxygen ion as O -2.
This means that the neutral oxygen atom has 8 electrons. Here's a very, very cool picture of a model representing the oxygen atom As you can see, oxygen has 2 of its 8 electrons in the shell closest to the nucleus, and the remaining 6 electrons - which are called valence electrons - in its second shell - this is oxygen's outermost shell.