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Boys start to produce sperm once they have started puberty which can be anywhere from 9 or 10-years-old although on average it would be around 14-years-old. Each boy is individual and development will be at different rates so it is impossible to say when you will begin to produce sperm yourself. Puberty lasts until around 19-years-old so for some boys sperm may not start until late in their teens.

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