All foods are composed of just water, proteins, carbohydrates, fats, and trace (tiny) amounts of vitamins and minerals. Proteins, carbohydrates [CHO], and fats are made up of carbon, hydrogen, and oxygen. Proteins add nitrogen to their chemical structures...
The liver is a chemical factory that is capable of turning what you eat into the substances your body needs. If you happen to swallow a trace amount of a chemical that the body does not like, such as a pesticide, then the liver traps it and breaks it down, preventing it from entering your normal bloodstream or damaging your liver...
All foods have varying combinations of these six units: carbon, hydrogen, nitrogen, vitamins, minerals, and water. Your main need is for energy or fuel to run the body. We have made selecting foods into something complicated, burdensome and worrisome...