Macronutients are nutrients that provide calories or energy.These substances are needed for growth,metabolism,and for other body functions.Macro means large, macro nutrients are nutrients in large amounts. There are three macronutrients
Each of these macronutrients provides calories,the amount of calories that each provides varies.
Carbohydrate-4 calories per gram. Protein-4 calories per gram. Fat-9 calories per gram.
Micronutrients are compressed of vitamins and minerals which are required in small quantities to ensure normal metabolism growth and physical well-being.
These are essential organic nutrients, most of which are not made in the body, or only insufficient amounts, and are mainly obtained through food. When their intake is inadequate, vitamin deficiency disorders are the consequence. Although vitamins are only present and required in minute quantities, compared to the macronutrients, they are as vital to health and need to be considered when determining nutrition security.
These are inorganic nutrients that also play a key role in ensuring health and well-being.They include the trace elements copper, iodine, iron, manganese, selenium and zinc together with the macro elements calcium, magnesium, potassium and sodium. As with vitamins, minerals they are found in small quantities with in the body and they are obtained from a wide variety of foods.
No single food contains all of the vitamins and minerals we need and, therefore, a balanced varied diet is necessary for an adequate intake.