height growth

Hi, how do you know that your height is not normal, i mean what is your height now? You are 15 years old and i would not worry if i was you. People grow in height until 25 years old so you have plenty of time to grow. If you want to boost your height a little you should consider playing sports like basketball or volleyball because those are the sports that can make you higher. On the other hand it mostly depends on your genetics. How tall are your parents , uncles, relatives? Other than having tall parents and playing sports that i have mentioned there is little you can do about your height. Later on if you notice that you dont grow in height at all its best to make piece with that fact and your life will be easier. 

Hi. I am 25, and my height is 5.6. Can I use niacin or Vitamin B3 as growth hormone activation in order to increase my height?