my mom has a high metabolism all the lucaslike family has a higher metabolism well from what I can tell. My mom started at 10. I started at as early as 4 and latest at 6 almost 7. I got subtle things until 6. I had 2 cousins that started a little earlier by that I mean 7 and 8. They were both heavier than me. The one that started as 7 was clinically obese. And her father and my mom aren't very close in appearance he's tall and fat she's short and thin. The other one started at 8 and got her period at 12. Her mom was late started like 12 or something... Her sister started puberty at 9. No one started as early as me without any health issue. It's mostly around 11 and 12...
http://emedicine.medscape.com/article/924002-overview
precocious puberty actually I've seen variously with black girls my bad not latinas. Either way not applicable