Whether or not a 17-year-old boy can grow taller depends on whether or not his epiphyses are closed.
However, for some boys with slow puberty, it is still possible to grow when the epiphyses have not closed yet. Everyone’s physique is different, and most boys’ epiphyses usually start to close at the age of 17-18. You can go to the hospital for an X-ray of the epiphysis to see if the epiphysis is closed. If the epiphysis is not closed, you can pay attention to physical exercise and enhance nutrition.
For example, you can play basketball, badminton, volleyball and stretching sports such as jumping rope and skipping. In daily life, you can eat more food containing protein, such as pork, beef, mutton and other meat food. And actively replenish calcium, strengthen exercise, and maintain balanced nutrition.