It is often observed that people living in hilly areas suffer from goiter because:
اکثر دیکھا گیا ہے کہ پہاڑی علاقوں میں رہنے والے لوگ گٹھلی کا شکار ہوتے ہیں کیونکہ
- Of low atmospheric pressure there, their diet and drinking water are deficient in iodine
- of low temperature
- of non availability of sufficient amount of oxygen
- of presence of rich density of ozone layers in the early morning hours