At what age is it healthy for people to start drinking coffee?

I’m curious, since my 13½ year old suddenly discovered she likes lattes. I was told things like “it stunts your growth”, or more generically, “it isn’t good for you”, but I’m wondering what the medical community thinks in modern times. So if you know anything current and factual, I’d love to know. If my daughter can have all the coffee she wants, fine. If there is reason for me to be concerned, I’ll limit her consumption.

Please don’t tell me anything unsubstantiated, like “my mother told me to wait until I was 16.”