Quick answer: Start early and keep it simple: use correct names for body parts in the preschool years, explain that bodies will change around ages 6–8, and give details about periods, growth and hygiene before changes begin, usually by age 8 or 9. Puberty typically starts between 8 and 13 for girls and 9 and 14 for boys (MedlinePlus), so many short talks beat one big one.
Most parents remember their own “talk” as awkward, late or missing entirely. The good news: you don’t need to be an expert. You need a few calm sentences, an open door and accurate facts. This guide gives you word-for-word scripts you can adapt for your child and your family’s values.
When does puberty start?
Every child is different, but pediatric guidance gives a typical range:
- Girls: puberty usually begins between ages 8 and 13. Breast development is often the first sign, and the first period usually comes about two to three years later, around age 12 on average (HealthyChildren.org, American Academy of Pediatrics).
- Boys: puberty usually begins between ages 9 and 14, often starting with testicular growth, followed by growth spurts, voice changes and body hair (MedlinePlus).
Talk to your pediatrician if signs of puberty appear before age 8 in girls or 9 in boys, or if there are no signs by 13 in girls or 14 in boys (MedlinePlus).
Because changes can begin as early as 8, the American Academy of Pediatrics encourages ongoing, age-appropriate conversations that start long before then (HealthyChildren.org).
Five rules that make every conversation easier
- Use correct names. Saying “vulva,” “penis” and “breasts” in a matter-of-fact way teaches that bodies aren’t shameful, and it helps children communicate clearly with doctors and trusted adults.
- Keep it short. Answer the question asked. You can always add more later.
- Stay calm. Your tone teaches as much as your words. If you’re caught off guard, it’s fine to say, “Great question. Let me think and we’ll talk tonight.”
- Use everyday moments. A pad in the grocery cart, a deodorant ad, a growth spurt: these are natural openings.
- Leave the door open. End with, “You can always ask me anything.”
Scripts by age
Ages 4–6: Bodies and privacy
At this age, children are curious about how bodies work and where babies come from. The goal is accurate names, body privacy and comfort asking questions.
Child: “Why does Mommy have breasts?” You: “Grown-up bodies are different from kids’ bodies. When you get older, your body will change too. That’s called growing up.”
Body safety script: “The parts of your body covered by a swimsuit are private. No one should touch them or ask to see them, except a doctor with a grown-up you trust there. If anyone ever does, tell me. You will never be in trouble for telling.”
Ages 7–8: “Your body will change”
Now is the time for a simple preview, before changes start.
“In a few years, your body will start changing from a kid’s body to a grown-up’s body. That’s called puberty. It happens to everyone, but at different times. You might grow taller fast, get hair in new places and notice stronger body odor. It’s all normal, and you can ask me about any of it.”
If your child has a sibling or friend going through changes, use that as a gentle opening.
Ages 9–10: The details
Many children start puberty in this window, so give specific, practical information.
Talking with your daughter about periods:
“Soon, maybe in the next couple of years, you’ll get your first period. Once a month, a little blood comes out of your vagina. It’s not an injury; it’s your body’s way of getting ready for being a grown-up someday. We’ll get pads ready for your backpack so you’re never caught off guard. Want to look at them together?”
Talking with your son about changes:
“Over the next few years, your voice will get deeper, you’ll grow hair on your face and body, and your penis and testicles will grow. Sometimes you might wake up and your sheets are damp. That’s called a wet dream, and it’s completely normal. It’s nothing to be embarrassed about.”
For every child: Explain all the changes, not just their own. Boys should know about periods and girls should know about voice changes. Understanding builds empathy and cuts down on teasing.
Ages 11–12: Feelings, hygiene and media
Changes are often in full swing. Focus on hygiene, emotions and the messages they see online.
Hygiene: “Your body is making more sweat and oil now. A daily shower and deodorant will help you feel fresh. Let’s pick out a few products you like.”
Emotions: “Hormones can make feelings bigger. Some days you might feel moody or cry without knowing why. That’s part of puberty. Talking about it helps, and I’m always here.”
Media: “A lot of the bodies you see online are edited or filtered. Real bodies come in every shape and size, and they change at different speeds.”
Ages 13–14: Respect, boundaries and trusted sources
Teens want more privacy and often turn to friends or the internet first. Keep the connection strong.
“You’re old enough to have questions you might not want to ask me, and that’s okay. I want you to get answers from trustworthy places. Your doctor, the school nurse and reliable health websites are good options. And I promise I won’t freak out if you come to me.”
This is also the age to deepen conversations about respect and consent. Our guide Consent Is Ongoing can help.
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What if my child doesn’t want to talk?
That’s common, especially with tweens. Try these approaches:
- Talk side by side. Car rides, walks and cooking feel less intense than face-to-face talks.
- Use a book or video. Read together, or let them read alone and ask, “Anything surprise you?”
- Write it down. Some families use a shared notebook for questions.
- Keep it brief. Two minutes is a win.
What if I don’t know the answer?
Say so. “I’m not sure. Let’s find out together” models honesty and good research habits. Stick to trustworthy sources such as your pediatrician, HealthyChildren.org and MedlinePlus. Parents can also explore our free resources, including the Body Basics Guide, and our earlier article on answering your child’s big questions.
Bring support to your school or community
Our Growing Up, Speaking Up program for grades 6–8 covers puberty and body changes in English and Spanish, and our two-hour Talking with Kids workshop gives parents practice with scripts like these. See our programs or contact us to bring a session to your school or community group.
Frequently asked questions
What age should I talk to my child about puberty?
Begin with body names and privacy in the preschool years, preview upcoming changes by about age 7 or 8, and share details before puberty starts. Puberty can begin as early as age 8 in girls and 9 in boys.
How do I talk to my daughter about her first period?
Explain what a period is in simple terms, reassure her that it’s normal, and prepare supplies together before it starts. The first period usually comes two to three years after breast development begins, around age 12 on average.
How do I talk to my son about puberty?
Describe the changes he can expect, such as growth spurts, voice changes, body hair and wet dreams, in a matter-of-fact way. Make sure he also learns about the changes girls go through.
When should I call the doctor about puberty timing?
Talk to your pediatrician if signs appear before age 8 in girls or 9 in boys, or if there are no signs by 13 in girls or 14 in boys.
Should I use the correct names for body parts?
Yes. The American Academy of Pediatrics encourages using correct terms. It reduces shame and helps children communicate clearly with doctors and trusted adults.
Sources
- MedlinePlus (U.S. National Library of Medicine). Puberty. https://medlineplus.gov/puberty.html
- American Academy of Pediatrics, HealthyChildren.org. Physical Development in Girls: What to Expect. https://www.healthychildren.org/English/ages-stages/gradeschool/puberty/Pages/Physical-Development-Girls-What-to-Expect.aspx
- American Academy of Pediatrics, HealthyChildren.org. Talking to Your Child About Sex. https://www.healthychildren.org/English/ages-stages/gradeschool/puberty/pages/Talking-to-Your-Child-About-Sex.aspx
- American Academy of Pediatrics, HealthyChildren.org. When & How to Talk With Your Child About Sex. https://www.healthychildren.org/English/ages-stages/preschool/Pages/Talking-to-Your-Young-Child-About-Sex.aspx