It is relatively normal for girls to develop a breast bump around the age of 12.
According to the time pattern of breast development, usually around the age of 12, the nucleus structure appears inside the breast, and then breast development begins. At this time, the breasts will appear to be slightly protruding. Subsequently the beginning of puberty, the girl’s body estrogen level gradually develops more, stimulating breast development obviously.
Around the age of 16 to 17, the breasts are full and rounded. 25 years of age reaches the peak of development, the breasts are firm and full. Subsequently, due to breastfeeding factors as well as age, the breast ligaments gradually relax, and there is also a change of breast flaccidity and ptosis.
Breast development is related to genetic and nutritional factors. Therefore, during the period of breast development, it is important to pay attention to nutrient supplementation, especially high-quality protein food supplementation, so as to promote good breast development.