Question
A nine-year-old girl has started to develop small breast lumps, which are painful when pressed. Is this condition a sign of precocious puberty or part of normal development? She currently weighs 61 jin and is 139 centimeters tall.
Answer
Based on the provided clinical data, the normal weight for a nine-year-old girl is around 29 kilograms, and the normal height is about 134 centimeters. The appearance of a breast lump in a nine-year-old girl at this age, accompanied by pain, is more likely a sign of normal development. It is recommended to avoid eating fast food, duck necks, health drinks, ginseng, potato chips, and out-of-season fruits. Continue to observe and do not worry excessively. If there are any doubts, consult a professional physician for assistance.