Why is my younger brother going through puberty before me im 2 years older and 15?

Puberty is the process of physical and emotional changes through which boys and girls become adults. The timing of puberty can vary widely from person to person, and there is no set age at which it should begin or end. Some boys may start puberty as early as 9 years old, while others may not start until they are 14 or 15 years old. This means that your younger brother could start puberty before you, even though you are older.

There are a number of factors that can influence when puberty starts, including genetics, nutrition, and overall health. Some of these factors are within our control, while others are not. For example, if you are overweight or obese, you may start puberty earlier than someone who is at a healthy weight. This is because excess body fat can produce hormones that can signal to the body to start puberty. Other factors, such as genetics, cannot be controlled. If you have a family history of early puberty, you are more likely to start puberty earlier yourself.

It is important to remember that puberty is a normal process, and it is not something to be embarrassed about. If you have any concerns about puberty, you can talk to your parents, a doctor, or a trusted adult.