Food is an important part of our routine and daily life. Food plays a central role in our existence. Each of us has to eat at least three times a day to live a healthy life. There are some people who can fast and avoid eating for a certain period of time. Fasting for a meal can be beneficial for health, but continuous fasting can be detrimental to the health of a person.
The importance of nutrition is that with improper nutrition, a person can become sick. Improper nutrition includes less nutrition than what is necessary and also excess nutrition than what is necessary. People who have a habit of taking improper nutrition are at a high risk of getting various diseases. This is because deficiency of certain foods can lead to diseases directly or it can lead to decreased immunity leading to diseases.
The various substances present in a nutritious diet and their role in preventing health problems are:
Vitamins: There are many vitamins like Vitamin A, Vitamin B, Vitamin C and others. Each of these vitamins has a particular role to play in our body. Each has a specific function that is essential for the regular functioning of the body system. When adequate nutrition is not taken in, it can cause various health problems due to the absence of these vitamins. Some of the health problems that can be prevented by giving importance to nutrition and having adequate vitamins are scurvy, various skin disorders, beriberi, rickets and many other diseases. Adequate intake of vitamins is one of the main importance of nutrition in preventing health problems.
Proteins: Another important aspect of nutrition is the presence of proteins in the diet. Proteins help to build up muscles and also have various other functions in the body. When a person does not have enough protein in the diet, it can lead to protein-energy malnutrition. This, in turn, can lead to a host of problems. An adequate amount of protein in the diet helps to prevent health problems. Proteins are found in foods such as meat, fish, eggs, beans, cereals and other foods. The proteins help to build and repair the various organs of the body. Proteins are the key in maintaining hormonal levels and also in the smooth functioning of the body. So adequate intake of protein in the diet is very necessary to prevent various health problems.
Carbohydrates: Carbohydrates are a great source of energy. They are also thought to increase obesity, but it should be understood that the body cannot live without carbohydrates. Almost all foods contain carbohydrates. In fact, carbohydrates are nothing but simple and complex sugars. A balance is necessary in the intake of this food as excess intake of carbohydrates can result in obesity.
Fats: People usually associate fat with danger and as a food that has to be avoided to be healthy. This is a wrong notion. There are some fats that have to be avoided, but not all fats are to be avoided. The fat that is present in foods like olive oil, mackerel and salmon are in fact good for health as they prevent cardiac diseases. The fat in the body also act as a storehouse of energy that can be used in times when the body needs excess energy.
Minerals: There are various kinds of minerals that are essential for a person’s healthy living. These minerals include Calcium, Potassium, Magnesium, Iron and Phosphorous. Each of these minerals has their own specific role in the human body. Calcium is essential for bone build up. When the calcium is less in the body, it causes weakening of the bones. Iron is needed for functioning of the immune system and also for transport of hemoglobin in the blood. Magnesium is indirectly related to the strength of bones as the magnesium helps in calcium absorption. Adequate minerals help to prevent health problems like osteoporosis.