NEET BIOLOGY

Detailed explanation-1: -The most common cause of goiters worldwide is a lack of iodine in the diet. In the United States, where the use of iodized salt is common, goiters are caused by conditions that change thyroid function or factors that affect thyroid growth.

Detailed explanation-2: -Iodine deficiency is the most common cause of goiter. The body needs iodine to produce thyroid hormone. If you do not have enough iodine in your diet, the thyroid gets larger to try and capture all the iodine it can, so it can make the right amount of thyroid hormone.

Detailed explanation-3: -The simple goitre is caused by less secretion of thyroid hormone due to the deficiency of iodine in the diet. The thyroid gland enlarges to secrete more hormone and results in goitre.

Detailed explanation-4: -Iodine deficiency is the most common cause of thyroid disease and, if serious, can cause permanent brain damage and intellectual disability in babies. Iodine is a mineral found naturally in seawater and soil. The body needs iodine to make thyroid hormone in the thyroid gland.

Detailed explanation-5: -Hypothyroidism occurs when your body’s iodine level decreases and your thyroid gland can’t produce thyroid hormone. This condition is also called underactive thyroid. It causes your metabolism to slow down, leading to fatigue, weight gain and the inability to tolerate cold.