Boys give little thought to muscles and beards when they are young. However, between the ages of 9 and 16, most boys will experience puberty. It will be a time of change, both physically and emotionally. Boys will often learn about puberty through school curriculum, media influences, and talking with their friends. It’s important for your son to hear about the changes directly from you and his doctor. Your son may want to know how tall he will get, why his voice is changing, or when he can shave for the first time. Boys usually start puberty two years later than girls. This can be frustrating for boys as they watch girls maturing and growing taller.
Definition of puberty: The period or age at which a person is first capable of sexual reproduction of children.
Path to improved well being
Change can be scary and confusing for a boy experiencing puberty. Break it down for your son by explaining the stages of puberty that will affect him physically and emotionally. Boys begin puberty at different ages. It can start as early as age 9. By age 16, most boys have fully developed. It’s during these years that the following changes occur:
Changes to his body
Your son will notice a growth spurt in his hands and feet first. His hands and feet will probably appear out of proportion from the rest of his body. It may contribute to clumsiness. Eventually, your son will notice a significant increase in his height. If he was overweight as a child, he might appear to have lost weight as he inches up. By the time a boy has reached the end of puberty, he may have grown 14 inches taller in height and 40 pounds heavier. Additionally, your son’s neck may thicken, his shoulders will broaden, and his hips will widen. His facial bones will change and his jaw line will become more defined. He’ll start to look like a man. Your son will start to sound like a man, too. His voice will crack for months as his voice goes from that childlike quality to the deep tone he’ll have as an adult.
Body hair will slowly appear on your son’s body and get thicker as he nears the end of puberty. Small amounts of hair will begin under his arms, the hair on his legs and arms will become more noticeable, and he will begin to get pubic hair around his penis and scrotum. Chest and facial hair begin to appear. It becomes more prominent near the end of puberty. Your son may have to shave once a week the first few years of high school. He also will see an increase in pimples, sweating under his armpits and body odor. Daily hygiene will be important.
Your son’s genitals will change, too. His penis and testicles will get larger. He’ll have more frequent erections, which is when his penis becomes hard, larger, and straightens out from his body. Sometimes, an erection leads to ejaculation, which is when semen comes out of his penis. Ejaculations can happen at any time, including at night. Some call this a “wet dream.” This happens when a boy’s testosterone level rises. Semen does have sperm in it. Once your son begins puberty, his semen can fertilize a woman’s egg and make a baby during sexual intercourse. Half of all boys may experience a condition that causes their breasts to become enlarged. However, the condition usually disappears after 6 months to 2 years.
Finally, many boys will enjoy seeing their muscles develop as they go through puberty. Even if they don’t lift weights, boys will see their muscles become more defined.
Changes to emotions and thinking
Boys will experience a range of emotions as they go through puberty. At times, they may feel irritable, sad, and even depressed. They may feel many different emotions related to their sexuality, including confusion, fear, and desire. Emotions start to level out by the end of puberty. Your son will likely show more independence from mom and dad and have more interest in developing closer bonds with friends and love interests. Their work and organizational habits may improve, as will their plans for their future.
Things to consider
Most boys sail through puberty with little more than embarrassment over their changing voice, acne, unexpected erections, fluctuating hormones, and emotions. However, there are times when it’s important to call your doctor. Those times include if your son hasn’t started puberty by age 14, if he has pains associated with his growth spurt, if your son’s acne seems worse than normal, if his mood or depression is more troubling than what you expected, or if he has thoughts of suicide or of harming himself or others. See your doctor for any of these reasons.
Questions to ask your doctor
- My son stopped growing at an early age. Should I be concerned?
- At what age could my son father a child?
- What medicine can my son take for his acne?
- What are the signs of a moody teenager versus something more serious?
- My son seems dominated by his interest in all things related to sex (or seems to have no interest at all). What is normal?
Centers for Disease Prevention and Control, Young Teens, Developmental Milestones
National Institutes of Health: MedlinePlus, Puberty in Boys
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This information provides a general overview and may not apply to everyone. Talk to your family doctor to find out if this information applies to you and to get more information on this subject.