Normal age for breast development in girls

The normal age range for breast development in girls is around 9 to 11 years old. Girls in breast development may show slight pain, is a normal phenomenon, if breast development late, may be caused by genetic reasons, may also be caused by long-term malnutrition, in the child development period, must eat more high-nutrition high-protein food, conducive to body growth, but also to wear more comfortable underwear, diet must prevent spicy food.