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.
Hence, the oxygen atom is partially negatively charged and the hydrogen atom is partially positively charged. The hydrogen atoms are not only covalently attached to their oxygen atoms but also attracted towards other nearby oxygen atoms. This attraction is the basis of the 'hydrogen' bonds.