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Is it possible to increase height at 15 years old :
its totally possible to increase your height and stimulate your bones growth in some medical ways , and it can keep increase till 19-20 years old 
How to increase height at age 15 :
1. practice jumping and running sports such as basketball
2. avoiding stress 
3. have plenty of rest and regular sleep
4. using legs or lower weights during the day
5. using some vitamins suppliments after consulting your doctor 
What is the helpful vitamins and minerals that help you grow taller :
1. vitamin A
2. vitamin E
3. vitamin B1
4. vitamin D
5. vitamin C 
6. zinc 
What is the surgical option to increase height ?
- surgical option to increase height is applied if you son is an adult and his height is not within normal range , because this surgery is quite risky 
- the medical way a type of surgery called : limb lengthing surgery which will increase your height around 10 cm or as much as you want in reasonable range to your body 
- surgery cost vary from a place to another , your surgery goals , and your medical condition , but its usually cost around 20000-40000 $ 
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