Question

what is major cause of goitre​

Answer 1

Answer:

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, a goiter is more often due to the over- or underproduction of thyroid hormones or to nodules in the gland itself

Answer 2

Answer:

by production of excessive thyroixine in throat amd it enlarges