2 Year Old Son Has Thin Hair

my 2 year old son has very thin hair and his hair has not grown around the side of his head i was just wondering would this mean he is prematurly going to lose is hair and is there and thing i could do to get his hair to grow.

Humans go through many changes in their hair and some very young children have a finer, baby-type of hair. Do not obsess over it, but if you are worried, ask your pediatrician who sees a large numbers of 2 year olds and can give you some idea how frequently this is found. As a hair transplant physician, I do not see many 2 year olds in my practice.