Question

Name the vitamins deficiency of which cause Night-blindness and Beriberi.

Answer 1

Hint: We know that Lack of adequate supply of nutrients in proper proportion in diet can result in different nutritional disorders and other deficiency disorders. Deficiency of different nutrients and vitamins express themselves as different symptoms in our body.

Complete answer:
Night blindness or nyctalopia generally refers to a lack of proper vision at night.it can also occur in dim light. Eyes require more time to get adapted when going from an area of light to dark places. Due to the deficiency or lack of Vitamin A night blindness occurs. Deficiency of Vitamin A causes less rhodopsin IN rod cells of the retina. So, the person will have less vision in dim light. Night blindness can be cured naturally by consuming vitamin A rich foods like green leafy vegetables, carrots, fish, and dairy products. Night blindness gets more severe as age advances, as they allow less light to pass through.
Beriberi is caused due to the absence of vitamin $B_1$ in the body. Vitamin $B_1$ is called thiamine and its absence is called thiamine disorder. There are two types of Beriberi.
Wet Beriberi: This type of Beriberi can cause heart disorders and affects the circulatory system. Cardiomegaly and cardiomyopathy are indicators of this type of beriberi. Symptoms are weakness, insomnia, and increase in heart rate.
Dry beriberi: It affects the nervous system. It can cause paralysis and neuropathy is an indicator of this type of beriberi. Symptoms are paralysis, difficulty in walking, pain and tingling effect, vomiting, etc. Causes of beriberi: lack of nutrients in diet and people who consume water pills.
Also, absorption of vitamin $B_1$ decreases due to an increase in alcohol absorption. Treatment includes more and more consumption of food rich in vitamin $B_1$ and the person shouldn’t consume alcohol.

Additional Information:
Vitamin A deficiency causes night blindness. Vitamin C deficiency causes scurvy. Vitamin D deficiency causes rickets and vitamin $B_1$ deficiency causes beriberi. Beriberi leads to increased heart disorders, weakness, insomnia, paralysis, nephropathy, cardiomegaly, cardiomyopathy. Two types of beriberi are wet and dry beriberi. Increase in intake of vitamin $B_1$ rich diet is the immediate treatment of beriberi.

Note:
Remember that the excess amount of vitamins can also cause various disorders. This condition is called over nutrition. Fluorosis, obesity, constipation, hypervitaminosis, hypercholesterolemia are some of them. It enables the body to utilize carbohydrates as a source of energy and reduction in vitamin levels leads to tiredness and loss of appetite.