My son is 14 years old with 153 height. He is the...

Dear Customer
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Is your son height lower than normal range ?
your son height may be considered as low height , but its also may normal and natural if some factors existed such as parents height and genetic effect 
Is it possible to increase height at 14 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 14 :
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 
Should you consider growth hormone therapy ?
growth hormone therapy isnt considered unless you son have other issues and have low GH levels . in that case doctor may recommand it 
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 
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Kind Regards