Genetic Influence: This is the main way to tell when puberty will begin. Ask your mom, grandma, or aunts when they started going through puberty, and you’ll most likely get a good idea of when you will.
Environmental Influence: It’s been noted by researchers that puberty occurs later in children who live in higher altitudes. Where you live could determine when you go through puberty.
Nutritional Influence: gURLs are more sensitive to this than guys. Your weight can effect when you go through puberty. So can consumption of animal protein, changes in nutrition, higher dietary fiber intakes, and being a vegetarian.