To make matters even more interesting, scientists now suggest that everyone’s body absorbs and processes nutrients, and other substances, in different ways. For instance, we know that we metabolize nutrients according to our unique chemical makeup, and that no two people metabolize a particular nutrient in the same manner. While one person who consumes a vitamin B12 capsule will absorb 70 percent of the vitamin prior to metabolizing it, another person will absorb only 20 percent, because of their unique metabolism.