Nutrition is the supply of food materials and food-supplements for an overall growth of the body. The human body is a complicated system. The cells are constantly developing energy for keeping us alive and active. The body also needs high immunity to fight against the external damaging agents. All these are possible when we are supplying our body the correct nutrition. As a whole, to keep the body functional, we all need nutrition. At the same time, when you are learning about nutrition, we will come to know about different mechanisms through which the body breaks down the foods we eat and then use the nutrients to build the cells. These are biologically abbreviated as catabolism and anabolism respectively. In this subject, you also learn how the human body responds to different types of food materials.
According to Oxford dictionary, Dietetics is “The branch of knowledge concerned with the diets and its effects on the health, especially with the practical application of a scientific understanding of nutrition”.
So, in nutrition, you study about different kinds of food ingredients and their utility for the human body and in dietetics, you learn about their effects on the health. People specialized in these branches are becoming nutritionists or dieticians. The subject is itself very complicated one with lots of physical and biological aspects.
A registered dietician (RD) who may also be called a registered dietitian nutritionist (RDN) graduates from a university with food, nutrition, and dietetics as the major subjects. Then they have to pass a licensing examination to become a professional RD or RDN. After getting an RD license, a professional in this field can work in a hospital or practice independently. For becoming a nutritionist, no such registration is required; a student can learn food and nutrition in a university and then become a nutritionist. A nutritionist works in the food industry where their knowledge of food and food values are utilized for quality production.
Micronutrients are those nutrients required in the human body in very small quantities such as vitamins and minerals. On the other hand, macronutrients are required in high quantities like carbohydrates and proteins.
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