They can produce viable sperm as young as 4 months.
Men continue to produce viable sperm longer than women continue to produce viable eggs. Risks of birth defects increase with male age, however.
This is a more complex question than it seems. If the person was born an intact and functioning male, then the person probably can produce viable sperm and produce a baby. A transgendered boy who was born a girl does not have fully functioning male genitals and cannot produce offspring. There are rare conditions where gender is less clearly defined, and it is possible that some of these conditions include having naturally produced external genitalia that do not produce viable sperm.
To produce babies
sperms
Males produce sperm from the age of puberty throughout adult life.
produce sperm
a gallon
Testosterone
a male cant get sperm but can make it by masturbating, males can usually produce sperm when they first get pubic hair.
The gonad is another name for testicle which is the part of the male body that produces testosterone and sperm.
Pollen, which is the equivalent of sperm cells.
testes