Need advice about my health?

I am a 16 year old boy and i am tired a lot of the time.. I went through puberty a little later then everyone else so i was wondering if this was a medical condition like thyroid problems or just cause i was growing. THANKS FOR THE HELP!Need advice about my health?
go and see you gp and have a blood test..you may have a nutritional deficiency or it could be stress or any number of things..have a 'well-man' check up and take the opportunity to learn about keeping your body healthy and how to check yourself for other problems...may just be tired and need sleepNeed advice about my health?
ok well it could be some thing like your thyroid but it could also be what you eat if you have a hi fat diet then you will be tired also how much and how well you sleep some people sleep but it's not a deep sleep so you don't really get much out of it i would go to www.webmd.com and there is a thing on the front page it asked you thing and you answer them at the end it gives some things it could be then you call your doctor and asked them and they can look in to it but first i would try changing our diet and try sleeping in the dark with nothing on in your room and if that does not work then call your doctor