Question

pertaining the endocrine system what will u interpret if you observe swollen neck in people living in the hills

Answer 1

This means that they are suffering from the goitre because of the defficieny of iodine in their food which causes less release of thyroxin hormones from the thyroid gland.

Answer 2

It is essential to know that they are suffered from goitre due to the iodine deficiency in their consumption that creates few releases of the thyroxin hormone from thyroid gland.  

In short, the swelling sensation in neck in the hills region is because of the insufficient consumption of iodine.

There are many supplements and natural resources available to get rid of iodine deficiency.