My son 11 years old, his neck looks very big, every unknown person also can identify that he has thyroid by seeing his neck. He is with hypo thyroid. His goiter is very big in size. Is there any chance to do the operation, or any way to reduce that size of neck. His thyroid is in normal condition, his personality also looks big. Looks like above the age. Also could you pls suggest the diet for him. What are the food items can avoid. He frequently have cold and couf, breathing also he will take very heard. Pls guide.