What are vitamins, are they organic? continue…
If we go back to the distinction between living and nonliving material we can list many of the functions of the human body that make us different from inanimate objects. We can breathe, eat, drink, reproduce, maintain a constant body temperature and move around from place to place. All these things are accomplished by expending energy and this, in turn, comes from the way we make use of our food. The change from the food on our table to the raw materials and energy needed by the body to sustain life occurs in a sequence of chemical reactions which are called metabolic processes. First, we need to break down our food during digestion to smaller and smaller units so that they can be absorbed across the lining of the intestines and into the bloodstream. These units can then be used to build bone and tissues and replace used or damaged cells, or they can be broken down further and used as fuel to produce heat and energy. Read the rest of this entry »
