What puberty is
Puberty is the time your body starts responding to sex hormones, which changes how you look, how you feel and how your body works. It is gradual, it…
10-12 5 min read
Ages 10-12
Getting ready for what is coming
You are starting to notice things changing, sometimes before anything has actually started. This pathway explains what is about to happen and what is happening now, in plain words.
Written in short, concrete sentences. Safety information is included in full rather than moved to a later age.
We do not hold back the important stuff
Some websites assume a reader under thirteen cannot handle information about bodies, consent or abuse. That assumption causes real harm, because it means the one reader who most needs to recognise something wrong is the one most likely not to. Everything on this site, including the safety and consent pages, is written for you.
What this stage is actually like
Not everyone's puberty has started at twelve. Some people notice breast development or body hair around ten, and some not until fourteen. Both are normal. The single most useful thing to know on this page is that there is no deadline.
Start here
Three articles to read first
Chosen because each one tends to raise the next question, rather than because they are the most read.
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The body changes you might notice first
The earliest changes are usually skin and body smell, then body hair, then growth and breast or testicular development — but the order varies a lot…
10-12 5 min read
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Personal boundaries and consent
Consent means choosing to do something freely, and being able to stop choosing at any time. A boundary is a line you get to set and change. Silence…
13-15 8 min read
What's covered
Everything in this pathway
Every item below is also reachable from its topic, because a pathway is a route in, not a wall.
- Why puberty happens The brain, the ovaries and the testes start a conversation. Read
- Growth spurts Why you get taller in a rush, and why your feet go first. Read
- Breast development What happens, in what order, and that it is not symmetrical. Read
- Testicle and penis development The first physical sign for most boys, explained carefully. Read
- Body hair Where it grows, when, and how to groom it safely. In writing
- Sweat and body odour What is actually happening, and what helps. In writing
- Skin changes and early acne Why spots appear, and what does not help. In writing
- Your first period What to expect, what products do, and who to tell. Read
- Erections and wet dreams Bodies do this without being asked. Explained without making it weird. In writing
- Vaginal discharge Normal discharge, what it is for, and what is not normal. Read
- Emotions and friendships Why feelings and friendships shift so much, and what to do. In writing
- Sleep, food and activity What growing bodies actually need. In writing
- Asking a doctor about development How to bring it up when it feels impossible. Read
6 items are marked "in writing". We would rather label a gap than publish a placeholder and let you think a question has been answered.
Library
Every article written for ages 10-12
24 articles, listed alphabetically.
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Asking a doctor about development
You can ask a doctor about any part of your body or development, and you will not be the first person of your age they have seen. Appointments are…
13-15 6 min read
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Breast development
Breast development is usually the first physical sign of puberty for people whose breasts will develop, and it typically takes two to five years. It…
10-12 6 min read
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Burning or pain when you pass urine
Burning when you pass urine is usually a urinary tract infection, but chlamydia, gonorrhoea and genital irritation can cause the same feeling. It is…
13-15 5 min read
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Emergency, same-day or routine care?
Emergency means contact your local emergency number now. Same-day means be seen today. Routine means book an appointment. The distinction that…
13-15 7 min read
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Growth spurts
A growth spurt is a period where you grow faster than usual, usually in the middle of puberty. It is uneven — hands, feet, head, limbs and trunk grow…
10-12 5 min read
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Headaches
Most headaches are tension-type or migraine, and neither is dangerous — but a few patterns are serious. The pattern matters more than the severity: a…
13-15 6 min read
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Hormones and mood
Hormones contribute to mood changes, but they are not the whole explanation. Puberty also brings sleep disruption, stress, social change and identity…
13-15 6 min read
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Menstrual cramps
Cramping comes from prostaglandins making your uterus contract. Heat and anti-inflammatory painkillers help most people. Pain severe enough to stop…
13-15 7 min read
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Period products: pads, tampons, cups and liners
Pads go outside the body, tampons and cups go inside. Tampons are the only product linked to a rare but serious infection, and their risk is managed…
10-12 8 min read
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Personal boundaries and consent
Consent means choosing to do something freely, and being able to stop choosing at any time. A boundary is a line you get to set and change. Silence…
13-15 8 min read
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Sudden testicular pain
Sudden severe testicular pain needs emergency medical care immediately, not observation. It can be caused by testicular torsion, where the blood…
13-15 5 min read
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Testicle and penis development
Testicular enlargement is usually the first physical sign of puberty for people with testes, typically somewhere between age 9 and 14. The scrotum…
10-12 6 min read
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Testicular lump or swelling
Most testicular lumps and swellings are benign — cysts, varicoceles, hydroceles or infection. But a hard lump that feels different from the other…
13-15 5 min read
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The body changes you might notice first
The earliest changes are usually skin and body smell, then body hair, then growth and breast or testicular development — but the order varies a lot…
10-12 5 min read
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The menstrual cycle
The menstrual cycle is the whole monthly process, not just the bleeding. It runs from the first day of one period to the day before the next, usually…
13-15 7 min read
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Typical timing and individual variation
Puberty commonly starts somewhere between about age 8 and 14, and it takes several years to complete. The range is wide because bodies are built…
13-15 6 min read
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Urinary tract infections (UTIs)
A UTI is a bacterial infection of the urinary system. Burning when you pee and needing to go more often are the classic symptoms. It is common, it is…
13-15 6 min read
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Vaginal discharge
Clear or white discharge is normal and keeps the vagina healthy. It changes with hormones and the cycle, and often increases before ovulation and…
13-15 7 min read
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Voice changes
Your voice deepens because your larynx grows during puberty, which lengthens and thickens the vocal cords. It often happens in steps rather than…
13-15 4 min read
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Weight changes and body proportions
During puberty your body changes shape before it changes weight. Shoulders widen, hips narrow or widen, limbs lengthen and your centre of gravity…
13-15 5 min read
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What hormones are
Hormones are chemical messengers made by glands and carried in the blood to act elsewhere in the body. During puberty their levels change…
13-15 6 min read
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What puberty is
Puberty is the time your body starts responding to sex hormones, which changes how you look, how you feel and how your body works. It is gradual, it…
10-12 5 min read
-
Why puberty happens
Puberty happens because your brain starts telling your ovaries or testes to make hormones, and those hormones change how your body works. The whole…
13-15 6 min read
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Your first period
Your first period usually starts as a small amount of blood that can look brown or pink rather than bright red, and it may be irregular for the first…
10-12 7 min read
Context
What is different at this age
- Development is usually still in its early stages, or has not started — both are normal.
- Friendships are changing quickly, and that is not a sign anything is wrong with you.
- Most adults around you went through this at a slightly different time, so their advice may not fit.
- You will hear other people's timelines constantly. Theirs is not a standard.
Question you would rather not ask anyone?
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