Growing and Changing

Have you ever noticed that people your age are starting to look and feel a bit different from when they were younger? That is because many of you are approaching or already experiencing puberty 🌱. Puberty is the word for the time when your body and mind gradually change from a child's into an adult's. It is not something that happens overnight — it usually takes several years. Every single person on the planet goes through puberty. It has been happening to humans for thousands of years. In this lesson we will find out exactly why it happens, what changes to expect, and who you can talk to if you ever have questions or worries.

So why does puberty happen at all? Deep inside your brain is a tiny structure called the hypothalamus (say: hy-po-THAL-a-mus). When the time is right, it sends a chemical signal to another brain region called the pituitary gland (pit-YOU-it-ary). The pituitary then releases special chemicals called hormones into your bloodstream. Hormones are like microscopic messengers — they travel around your body and instruct different parts to grow and develop. The main hormones involved are oestrogen (produced mainly in ovaries) and testosterone (produced mainly in testes). Both hormones exist in every body, just in different amounts. It is this hormonal system that drives all the changes you will learn about next.

Alongside the physical changes, puberty also brings emotional and social changes. You might find your moods feel more intense — feeling very happy one moment and quite low the next. This is directly caused by hormone levels fluctuating (going up and down) in your bloodstream. You may start to think more about who you are and how you fit in with friends. Friendships can feel more important, and you might become more aware of your own identity. These feelings are a healthy sign that your brain is developing too. The prefrontal cortex — the part of the brain that handles decisions and emotions — is still growing throughout your teenage years, which is why feelings can feel so big right now. 💭

Menstruation (periods) is one change worth understanding clearly, because it affects roughly half the population. When puberty begins in bodies with a uterus, the uterus prepares each month to potentially support a pregnancy. If no pregnancy occurs, the lining of the uterus sheds through the vagina — this is a period. It usually lasts 3 to 7 days and happens roughly every 28 days, though cycles vary widely at first. Periods can sometimes cause cramping or discomfort. Period products such as pads, tampons or period pants absorb the flow. Having periods is a completely normal, healthy bodily process — not something to be embarrassed about. 🌸

It is completely normal to have questions or worries about puberty — almost everyone does! Knowing who to turn to makes a huge difference. A trusted adult is someone who makes you feel safe, listens without judging, and can actually help you. This could be a parent or carer, an older sibling, a teacher, a school nurse, or a family friend you trust. Outside school, your GP (family doctor) is a brilliant source of accurate information. Reliable websites made for young people — such as NHS inform, BBC Own It, or Childline — are also excellent. Remember: asking for help is a sign of strength, not weakness. 💪