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The deficiency of which vitamin in the body leads to poor blood clotting?
A. Vitamin A
B. Vitamin C
C. Vitamin D
D. Vitamin K
Correct Answer Is Option = Vitamin K
Notes / Explanation
The deficiency of vitamin K in the body leads to poor blood clotting, and this makes vitamin K one of the important nutrients required for the maintenance of good health. Vitamins are substances that the body needs in small amounts in order to function properly, and although they are required only in tiny quantities, a lack of any particular vitamin can lead to specific problems and diseases. Vitamin K is the vitamin that is especially associated with the process of blood clotting, which is the natural mechanism by which the body stops bleeding when a blood vessel is injured. When a person suffers a cut or a wound, the body normally responds by forming a clot at the site of the injury, which seals the wound and prevents the loss of too much blood. This clotting process depends on a series of substances in the blood that work together, and the production of some of these essential substances requires the presence of vitamin K. If the body does not have enough vitamin K, it cannot produce these clotting substances in sufficient quantity, and as a result the blood does not clot properly. A person suffering from a deficiency of vitamin K may therefore bleed more easily and for longer, and even small injuries may lead to excessive bleeding, while bruises may appear more readily. In severe cases, a serious lack of vitamin K can lead to dangerous bleeding. Fortunately, vitamin K is found in a variety of foods, particularly in green leafy vegetables, and it is also produced by helpful bacteria that live naturally in the human digestive system, so that most people who eat a reasonably balanced diet obtain enough of this vitamin. Deficiency is therefore relatively uncommon in healthy adults, but it can occur in certain situations, and newborn babies in particular may need special attention because their bodies have not yet built up a supply of the vitamin. Understanding the role of vitamin K helps to explain the importance of a balanced diet that includes a variety of foods. The study of vitamins and the diseases caused by their deficiency is a common topic in examinations. For PPSC and other competitive examinations, the key points to remember are that vitamin K is essential for blood clotting, that its deficiency leads to poor clotting and a tendency to bleed easily, and that it is found in green leafy vegetables and is also produced by bacteria in the digestive system.
