What to say · Puberty · Tweeni

How to talk to your child about puberty: what to say and when

Start before the changes begin, often around age 8 or 9, and keep it to many short, casual talks instead of one big one. Try “Bodies change at your age, and I’m happy to answer anything.” Puberty usually starts at 8 to 13 in girls and 9 to 14 in boys, so every kid’s timing differs.

Updated Oct 26, 2026 · Little Brain Crew editorial team · How we write

Tweeni: puberty starts and friends begin to matter more

Say it to your kidTweeni is the part of you that’s growing into a bigger body. Soon you might notice new hair, new smells, a growth spurt or new feelings. Everyone goes through it, just at different times, and nothing you ask will ever be weird to me.

When should I start talking about puberty?

Earlier than feels natural. NICHD says puberty typically begins between ages 8 and 13 for girls and 9 and 14 for boys, and some kids notice body odor or underarm hair even earlier, from a hormone step called adrenarche. If you wait until you see changes, your child may already be confused. Starting around 8 or 9 gives you time to go slowly.

Think of it as a hundred small talks instead of one big one. The main thing is not the script, it’s being the kind of person your kid can ask. A relaxed face matters more than a perfect speech.

How do I bring it up without it being awkward?

Choose low-pressure moments, such as car rides, walks or cooking together. Side by side is easier than eye to eye, and a long drive gives you a built-in exit.

Start by asking what they have heard. Then say one or two things and stop. It’s fine to be honest about the awkwardness: “This can feel awkward, and I’m glad we’re talking.” Every child should learn about the changes in both bodies, not only their own.

Growth spurts, sweat, body odor and acne
New hair on the body
Periods, with plenty of notice for girls
Voice, breast and genital changes
Privacy, respect and the right to say no

What if I don’t know the answer?

Say so. “I’m not sure. Let me find out, and we’ll look at it together tonight” builds trust, and it shows them that asking is okay. Use reliable sources, check what your child’s school covers and fill in gaps, and ask your pediatrician about anything you can’t answer.

What about moods and feelings during puberty?

A lot changes at once: the body, friendships, sleep and expectations. The body clock also starts to shift later around this age, and tiredness makes big feelings louder. Instead of blaming hormones, you can acknowledge the whole picture. “Whatever you’re feeling is okay” works better than “it’s just puberty.”

A mood change that lasts more than about two weeks, or any withdrawal from things they love, is worth a call to the pediatrician.

What you’ll see at home

Questions about bodies, often at odd times
More privacy, embarrassment or silence
Body odor, new hair, acne or a growth spurt
Comparing themselves with friends
Moodiness alongside tiredness

Try tonight

Start one small talk in the car or while cooking: “Have you noticed anything about your body changing yet, or heard anything from friends?”
Say one sentence of reassurance: “Everyone changes at a different pace, and both early and late are normal.”
Tell your child they can ask you anything, any time, and that you won’t be mad.

What to say

Instead of“We need to have The Talk.”
Say“Bodies start changing around your age. Want to know what’s coming? Ask me anything, any time.”
It invites without pressure, and it makes the talk ongoing instead of one scary event.
Instead of“Ew, not now.”
Say“This can feel awkward for both of us, and I’m glad we’re talking.”
Naming the awkwardness removes half the weight and shows that it’s allowed.
Instead of“You’re too young to worry about that.”
Say“Some kids start early and some start later. Both are normal.”
It reassures kids who are ahead or behind and reminds them that timing varies.
Instead of“Where did you hear that?!”
Say“Good question. What have you heard so far?”
Curiosity first keeps them talking. Alarm teaches them to stop asking.
Instead of“I don’t know. Ask your doctor.”
Say“I’m not sure. Let me find out and we’ll look at it together tonight.”
It keeps you in the conversation and models how to look things up reliably.
Instead of“It’s just hormones, you’re being moody.”
Say“A lot is changing at once. Whatever you feel is okay, and I’m here if you want to talk or not.”
It validates without explaining feelings away, and it leaves the door open.

Want the whole crew on your side?

The Kid Brain Toolkit: the 12 hardest moments decoded, from screens off to bedtime, with what to say and what to try tonight. Read it in one evening.

See the plans

The Toolkit is $9, one payment. For learning only, not medical advice.

Questions parents ask

At what age does puberty start?

NICHD says it typically occurs between ages 8 and 13 for girls and 9 and 14 for boys. The NHS considers signs before 8 early and none by 15 delayed. Within those ranges, wide differences between kids are normal.

Should I talk to boys about periods?

Yes. Everyone benefits from knowing how all bodies change, and it reduces teasing and embarrassment. Keep it matter-of-fact and short.

My child doesn’t want to talk. What now?

Don’t force it. Leave the door open, try side by side moments, and share a good book or video if they’re open to it. A short sentence now and then is enough.

School covers puberty. Do I still need to talk?

Yes. School lessons are brief, often split by gender and may come after changes begin. Your talks fill in the gaps and tell your child that this topic is safe at home.

Sources

Educational content only, built on everyday habits. It’s not medical advice, a diagnosis or a treatment. If something about your child’s sleep, mood, growth or behavior worries you, talk to your pediatrician.