Question

Goiter is caused due to
a) Deficiency of Iodine
b) Excessive Iodine
c) Lack of water
d) Deficiency of protein

Answer 1

Hint: Goiter is a deficiency disorder related to the depletion of the endocrine secretion. It causes the enlargement of that endocrine gland which is directly involved for the secretion that leads to goiter.

Complete answer: Goiter is actually the enlargement of the thyroid gland. The thyroid gland here mentioned a small butterfly-shaped gland located in the neck just below the Adam's Apple. This thyroid gland produces two hormones known as thyroxine and triiodothyronine.
These hormonal secretions of thyroid gland play the roles and bodily functions like the body temperature Mood excitability pulse rate digestion and many others.
Generally, one of the causes of goitre is a lack of iodine in the diet. (option A)
Now the question may arise how iodine affects the secretion of the thyroid gland. The answer to this is that iodine is a necessary element to make the thyroid hormone. When there is a depletion of Iodine it directly affects the secretion of thyroxine hormone, and to fight back this disease now iodine is being added to the table salt in many countries so that this type of iodine related disorders mainly goitres can be prevented.
Another cause could be, the thyroid gland does not make enough hormones to meet the body's essential needs, at that time the thyroid gland in order to cope up with such a situation tries to maintain the required quantity of thyroxine hormone by growing larger in size and this mechanism leads to simple goitre.
The correct answer will be option A.
Let us now evaluate other options also. Option B is excessive Iodine. Excessive Iodine intakes can also cause thyroid gland inflammation and thyroid cancer. Option C is the lack of water. Lack of water causes overall fluid loss in the body which leads to dehydration. Option D is a deficiency of protein. Deficiency of protein leads to hypoproteinemia.


Note: Iodine is a necessary element to make the thyroid hormone. When there is a depletion of Iodine it directly affects the secretion of thyroxine hormone which leads to a disease called a goiter. From the options given for the question, the lack (lack and deficiency, both the words have the same meaning) of iodine is the correct option that leads to goiter.