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Nutritionists are the professionals who are specialists in nutrition. They also carry out research for food manufacturers and other such industries that are a part of nutrition.
Types of Nutrients
A nutrient is a source of nourishment, a component of food, for instance, fat, vitamin, protein, carbohydrate, water, mineral, and fiber.
- Macronutrients are nutrients that are needed in relatively large quantities.
- Micronutrients are nutrients are needed by our body in small quantities.
– Energy macronutrients: Which provide energy.
– Macronutrients that do not provide energy.
The energy provided by macronutrients is measured either in kilocalories (kcal or calories) or Joules. 1 kilocalorie (calorie) = 4185.8 joules. The energy macronutrients are:
Carbohydrates – 4 kcal per gram
Proteins – 4 kcal per gram
Fats – 9 kcal per gram
Macro-nutrients that do not provide energy
These do not provide energy, but are still important:
Minerals: Minerals are found in a range of food types.
Minerals are sometimes added to certain foods to make up for any shortages. Example: Iodized salt – iodine is added to prevent iodine deficiency.
The vitamins are classified as water-soluble or fat soluble. There are four fat-soluble vitamins (A, D, E, and K) and nine water-soluble vitamins (eight B vitamins and vitamin C).
Water-soluble vitamins need to be consumed more regularly because they are eliminated faster through urine and cannot be stored for long.
Fat-soluble vitamins are more likely to accumulate in the body because they are harder to get rid of quickly.
A proper Nutrition not just maintains good health but prevents diseases too. Depending on the individual body requirements, nutrition quantity may vary