At what age is it normal for a boy's voice to change?

Voice change in boys usually occurs during puberty, approximately between the ages of 12 and 16. This is due to hormonal changes during puberty, particularly increased testosterone levels, which cause the larynx to enlarge and the vocal cords to thicken and lengthen, resulting in a deeper voice. The voice change period in boys is an important stage of puberty, and the normal timeframe varies among individuals. The duration of voice change may range from several months to two years, varying from person to person. Some children may complete this process in a short period, while others may take relatively longer. Generally, boys finish voice change by around age 18, with their voice gradually transitioning from a child's voice to an adult's voice. During this period, boys should take care to protect their throat, avoid excessive voice use or consuming irritating foods, so as to prevent vocal cord damage. Everyone's development timeline is different; some boys may start voice change earlier or later, which are all normal physiological changes. If parents have concerns about their child's development, they are advised to consult a doctor.