I'm 20 years old, and my height is 5'8, I want to be taller, is there any way?

I'm often frustrated about my height, I do work out on daily basis and have good stamina and over all health. I eat healthy but my height is not increasing. Some says it is because of gene, my father is 5'9 and my mother is 5'6. If it is gene effect, than why my younger siblings are taller than me.

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