Importance of Vitamins in Human Body: Vitamins A, B, C and D

Importance of Vitamins in Human Body

Vitamins are directly involved in all stages of blood formation, the synthesis of hormones and enzymes. Moreover, they ensure the normal functioning of the respiratory, cardiovascular, digestive and nervous systems. The importance of vitamins in human body for prevention of damaging effects of toxins, free radicals and radionuclides is rather high.

When is your body low on vitamins?

The importance of vitamins in human body cannot be overestimated. A simple calculation of the calorie content and main nutrients in the diet is not enough for good health. Vitamins and minerals are rather important, and the lack of them instantly affects our health and appearance.

If you become tired more quickly and it is difficult for you to stay positive or control your emotions, although you used to have high work capacity if your nails suddenly become very brittle, and your eyes get tired from the computer faster than usual, then it is probably not just the weather change. Most probably you have lack of some vitamins. Here is a list of the most important vitamins to take everyday for a person:

Vitamin A 

We all learned from childhood that carrots are good for eye health because of vitamin A. It is one of the most important vitamins in human body according to the researches. But as adults who spend a lot of time in front of a computer screen, we completely forget that the deficiency of this vitamin is reflected in our eyesight. If you constantly feel dryness and pain in your eyes, and in the dark it is difficult to distinguish even the contours of objects, this is time to eat more orange vegetables because they will help to deal with the lack of vitamin A.

Vitamin B

Speaking of B vitamins, it is important to remember that they are not accumulated in the body, but nutritional importance of vitamins is high. That’s why it is so important to ensure their daily intake. The first symptoms of a lack of vitamins in this group are characterized by the hair loss and brittle nails. It is recommended to eat more green vegetables, nuts, cereals and lean meats.

Vitamin С

If we make a rating of the most important vitamins for us, then ascorbic acid or vitamin C would occupy one of the leading positions. It is involved in the vast majority of chemical processes in the body. That is why, having noticed the first signs of a lack of this valuable element, be sure to add an additional portion of apples, kiwi, citrus fruits, green leafy vegetables, tomatoes and bell peppers to your diet. All of these foods are incredibly rich in vitamin C. But how to recognize the deficiency of this vitamin? The main symptom of vitamin C deficiency is, of course, frequent colds. In addition, it is worth paying attention to bruises constantly appearing for no particular reason on the body, to poorly healing wounds and very dry skin. These symptoms also indicate a lack of this vitamin.

Vitamin D

The main visible signs of an insufficient amount of this vitamin in the body include insomnia and loss of appetite. Frequent colds can also be an indicator of vitamin D deficiency. The main sources of this essential vitamin for the immune system and bone are cheese, cottage cheese, fish, seafood, and egg yolk.


It’s is important to remember that there is no “absolute vitamin deficiency”: if any of the most vital vitamins were completely absent, person wouldn’t survive. But seasonal decrease in vitamin supply is a common situation and can be easily corrected.

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