<p>There is nothing you can do at that age usually, your bones (growth plates) will have closed or are in the process of closing, and growth hormones when your bones are in the process of closing is useless and dangerous and no respectable clinic would give that to someone of normal height. (a simple CT scan can show if your growth plates closed in like 5 minutes, but then there’s no point in that at 17 so I would just be happy with your, as others have said, completely normal height)</p>
<p>Food has very little to do with it, it’s genetics, growth stunting can happen but those are people who are severely underweight and severely malnourished, think Africa, this is incredibly uncommon in the West, almost everyone reaches their growth potential by eating normally.</p>
<p>5.9 is a completely normal height, I have no idea why you are worried about that, there are millions of people who would wish they had your height, be happy with what you have and realise you have a normal height and the weight on your shoulders or worries you have will go away.</p>