Define food, nutrition and health.

Food is any substance consumed to provide nutritional support for an organism. Food  is usually of plant or animal origin and contains essential nutrients, such as carbohydrates,  fats, proteins, vitamins or minerals. The substances is ingested by an organism and assimilated by the organism’s cells to provide energy, maintain life or stimulate growth.

 Nutrition is the science that interprets the interprets the interaction of nutrients and  other substances in food in relation to maintenance, growth, reproduction, health  and disease of an organism. It includes food intake, absorption, assimilation,  catabolism, excretion and biosynthesis. 

 Health is a state of physical, mental and social well-being in which disease and  infirmity are absent. It refers not only to the absence of disease, but the ability to  recover and bounce back from illness and other problems. 

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