Name the diseases caused by the deficiency of the following vitamins.

(a). Vitamin A

(b). Vitamin B

1. Deficiency diseases are diseases that are caused by the lack of certain essential nutrients, especially vitamins and minerals, in one's diet over a prolonged period of time.
2. A balanced diet is extremely important for the good health of a person.
3. Any imbalance in the diet might lead to excess or insufficient intake of certain nutrients.
4. Insufficient intake of a particular nutrient can lead to a deficiency disease.

(a). Vitamin A

1. Vitamins are essential organic compounds that are required for normal growth and maintenance of our body.
2. They play a vital role in boosting and strengthening the metabolism of living organisms.
3. Vitamin A is an important vitamin that plays a major role in our vision.
4. It helps in the production of certain pigments that are important for the proper functioning of the retina.
5. Listed below are some of the sources of Vitamin A that can be included in our daily diet nuts. eggs, fish, liver, beet greens, leafy vegetables, and dairy products.

(b). Vitamin B

1. Vitamin B plays a vital role in cell metabolism.
2. They are grouped into water-soluble vitamins.
3. Vitamin B comprises all eight directory complements. Each vitamin B performs unique functions.
4. The B vitamins were eventually sorted into 8 chemically distinct entities.
5. They are all cofactors for enzymatic reactions, providing important catalytic functionality to drive metabolic processes to completion.
6. Vitamins, are essential to life and must be consumed in food sources since they can’t be synthesized in the human body.
7. Lack of vitamin B would lead to various health problems.
8. Pregnant women and aged adults are in much requirement of vitamin B. Under certain circumstances, celiac disease, the use of excess alcohol, and Crohn’s disease may lead to minimal absorption of B-vitamins.