What Is Nutrition?
What Is Nutrition? Nutrition is the science that interprets the contact of nutrients and other substances in food in relation to maintenance, growth, reproduction, health, and disease of an organism. It contains food intake, absorption, assimilation, biosynthesis, Catabolism, and excretion.
There are three types of nutrition:
- Human Nutrition
- Animal Nutrition
- Plant Nutrition
But Todays, we only see human nutrition.
What Is Human Nutrition?
Human nutrition deals with the provision of necessary nutrients in food that are necessary to support human life and health. Poor nutrition is a long-lasting problem often linked to poverty, food security or a poor understanding of nutrition and dietary practices. Starvation and its consequences are large contributors to deaths and disabilities worldwide. Good nutrition helps children grow physically, promotes human biological development and helps in the purge of poverty.
Proteins, fats, Carbohydrate, Vitamins, Minerals, Water this nutrition are needed to maintain our health.
I think we should also include Oxygen as a nutrient, since (1) we all know how important oxygen to us; and (2) we have ways to oxygenates the blood.
Nutrients and Functions:
- Fats & Oil
***Below We will see all Nutrition and their function one-by-one****
Protein is a huge molecule composed of one or more polypeptides chain and each chain turn composed of amino acids. There are an expected 100,000 different proteins in the all humans body, and each of them is made up of a different combination of 20 amino acid.
Carbohydrates are carbon, hydrogen, and oxygen-containing molecules of plant origin, such as sugars, starch, and fibers (cellulose, lignin, pectin, and mucilage). The Carbohydrates are very important to us because sugars and starch provide the energy to maintain our metabolism, as well as the carbon cause for us carbon-based humanoids; whereas dietetic fiber also plays an important role in health.
3. Fats & Oil
Fats and oils are triglycerides that are made from one glycerol and three fatty acids. The Fats are generally in a solid state at room temperature, whereas oils are generally in the liquid state at room temperature. Fats and oils are essential to our health as a significant source of energy and fatty acids, as well as providing some other significant functions.
Vitamins are a group of organic molecules that are necessary for a small amount our normal metabolism; they need to be reserved from food since our bodies either don’t produce them, or at least not in enough amount. Vitamins serve either as coenzymes, or form an integral part of coenzymes.
Based on solubility, vitamins are generally grouped into two major groups: water-soluble and fat-soluble.
1) Water-Soluble Vitamins
- Vitamin C and the B complex.
- water-soluble vitamins are not stored in the body, they are emitted in the urine instead.
2) Fat-Soluble Vitamins
- Vitamin A, D, E, and K
- fat-soluble vitamins are stored in the fat tissues and liver, thus toxicity may happen if overdosed with fat-soluble vitamins.
Minerals are a group of inorganic elements that are essential to our health and normal metabolism. Based on the number of our body’s needs, they can be divided into Major Minerals and Trace Minerals.
1) Major Minerals
- Elements that are required by the body for at least 100 mg/day
- Calcium, Phosphate, Potassium, Magnesium, Sodium, Sulphur and Chlorine
2) Trace Minerals
- Elements that are required for less than 100 mg/day
- Fluorine, Iodine, Iron, Chromium Manganese, Cobalt, Copper, and Zinc.
Life made of water. Water creates about 50% to 70% of body weight in human. A minimum of about two liters of liquid per day is suggested for the average adult for best health.
Anyone who holds up breath for a minute or two will realize the importance of oxygen – I’m sure lots of people have already had this experience when they were kids.
We need carbohydrates as the carbon source for us carbon-based organisms; we use water as the medium where metabolism takes place; and likewise, we rely on oxygen as the ultimate source of oxidative power to unlock the energy that is stored in carbohydrates.
Why oxygen is not added by the science world as one of the categories of nutrition is hard to understand. Maybe because of the fact that oxygen is freely available so it’s been taken for granted.
Oxygen can be manipulated to better our health, and in this regard, I would categorize oxygen as a nutrient. If you have any problem related to What Is nutrition? then freely comment below. Thank You!