Not all nutrients are energy sources, but they are necessary in one form or another.

These nutrients are divided into two types:

  • Macro-nutrients.
  • Micro-nutrients.

The above nutrients could be obtained from the environment. Bulk carbohydrates provide the organism with energy for the metabolic process. They provide a huge amount of energy that has to be converted used for energy. Bulk components include fats, proteins and carbohydrates.


Micronutrients provide important components in metabolism. They rebuild and repair damaged tissues to regulate body processes. Micronutrients include calcium, iron, vitamins, iron, minerals and vitamin C.

Important Nutrients in Food

There are many nutrients that cannot be metabolized by the body and must be consumed externally through food. These are very important for the body to function properly. The essential nutrients and their functions include are mentioned below:


It is one of the main sources of energy for humans. It contains three types of carbohydrates and includes fiber, sugar and starch. They are usually low in calories and therefore help maintain a healthy diet.


This mineral is essential for the formation of bones and teeth. In very small amounts, we also need it for our nervous system, muscle function and heart. Sources of calcium include puddings, milk, yogurt, tofu, canned fish and green leafy vegetables. Lack of calcium leads to osteoporosis.


It is essential for brain, nerve and cell development. It plays an important role in the production of enzymes and hormones. Dishes include cheese, milk, chicken, beef and fish.


It is one of the most important sources of calories. One gram of fat contains 9. Carbohydrates and proteins make up about twice as many calories as we get. Fat is often found in the foods we use in cooking, as it spreads on bread and also appears in snacks and rings.

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