What is puberty?
Puberty is a natural phase in life marked by swift physical and physiological maturation as the body’s major systems, including the reproductive organs, reach full functionality. This transition is orchestrated by shifts in hormone levels that typically begin when a child is midway through elementary school.
When does puberty begin?
Timing varies, but on average, girls enter puberty between ages 8 and 13, whereas boys start between 11 and 13 years. This process can span several years, bringing about a range of bodily and emotional transformations.
How does puberty get underway?
When the body is primed for this change, the hypothalamus releases gonadotropin-releasing hormone (GnRH). Upon reaching the pituitary gland beneath the brain, GnRH stimulates the secretion of two additional hormones, luteinising hormone (LH) and follicle-stimulating hormone (FSH), into the bloodstream. Though both sexes produce LH and FSH, their actions differ between girls and boys.
What changes occur in girls?
In females, LH and FSH act on the ovaries, prompting them to secrete oestrogen. At birth, roughly one million eggs are present; by puberty, this number has dwindled to around 300,000. Together, oestrogen, LH, and FSH guide the body toward reproductive capability. Typical physical developments include:
- A growth spurt in height
- Widening of hips and formation of feminine curves
- Increased oil production in skin, potentially causing acne
- Hair growth under the arms and in the pubic region
- Noticeable body odour
- Breast tissue formation, often tender at the “budding” stage
- A white, mucus-like vaginal discharge
- Onset of menstrual periods, which may be irregular and accompanied by cramps
What changes occur in boys?
In boys, LH and FSH target the testes, triggering testosterone release and sperm production. Common physical changes include:
- A growth spurt in height
- Increased muscle mass
- Skin that may become oilier, leading to pimples
- Hair growth on the face, underarms, and around the genitals
- Noticeable body odour
- Voice deepening or “breaking”
- Enlargement of the penis and testicles
- Spontaneous erections
- Nocturnal emissions (“wet dreams”)
- Temporary breast tenderness or slight enlargement
Emotional impact
Puberty often brings emotional turbulence as hormonal fluctuations coincide with the late maturation of the brain’s reasoning and emotional centers. It’s common for adolescents to:
- Develop sexual attraction or interest
- Feel self-conscious, especially about acne or body changes
- Compare themselves with peers
- Experience rapid mood swings (anger, irritability, frustration)
- Feel anxious, scared, or isolated
- Notice shifts in energy and sleep patterns, further affecting mood
How to support someone through puberty
Although puberty is temporary, guidance is invaluable. You can:
- Stay calm when emotions run high
- Be a trustworthy listener and validate their feelings
- Give them space to process changes
- Reassure them that their experiences are normal
- Help them develop coping strategies or lighten the mood
- Maintain clear rules and boundaries
- Encourage good sleep and nutrition
- Consider vitamin supplements only after consulting a healthcare professional
- Respect their growing independence and need for privacy
- Avoid criticizing their changing body unless they seek advice
- Model positive body image and healthy habits
- Praise positive behaviour and lean into “up” moments
- Talk about menstruation and wet dreams before they occur, ensuring they know what to expect and how to manage them
- Seek professional help for issues like severe acne, painful periods, or body-image concerns
When to consult a doctor
Most puberty-related changes don’t require medical attention. However, you might consult a GP if:
- Puberty starts before age 8 or is not underway by 14
- A girl has not had her first period by 16 or 17
You may also seek advice if,
- Breakouts are severe enough to warrant a dermatologist
- Menstrual bleeding is unusually heavy or painful
- Mood disturbances persist for over two weeks or significantly impair daily life