carlychung 寫道:
SandyHung,
basically, Jun has no Thyroid Gland since birth (which is not developed), so he has not enough thyroxine 甲狀腺素 (甲狀腺荷爾蒙) which guard the body metabolic rate, if there is not enough, the body cannot growth both mentally or physically讲得不好听就好似白痴侏儒咁. So, he has to go for regular check-up.