My daughter got her period, will she still grow? 

Yes, most girls continue to grow after their first period.

Growth usually slows once menstruation begins, but many girls still grow 3 inches in height on average.

The first period (menarche) typically happens toward the later stages of puberty after a major growth spurt has already occurred.

However, while the fastest growth phase is often finished, the body is still maturing.

It’s very common for parents and teens to worry about height once periods start.

On luna, we have received loads of questions from teens asking about the connection between periods, puberty, and height. 

By knowing the facts, you can help your teen stay informed and confident as they grow.

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Do girls gain height after periods?

Yes, girls usually gain some height after their menarche, though the amount of growth is typically smaller than before their first period.

Most girls experience their biggest growth spurt before menstruation begins.

However, growth does not stop immediately.

Many girls will still grow for another one to two years, just at a slower pace.

The exact amount varies from person to person.

Genetics, nutrition, sleep, and overall health all play a role in determining final height.

For teens, it can help to understand that puberty doesn’t happen overnight.

Bodies continue changing and developing well after periods begin.

How much more will my daughter grow after starting her period?

On average, girls grow around 7 cm (about 3 inches) after their first period.

Some may grow slightly more, while others may grow less, depending on when their period began relative to their growth spurt.

If menstruation starts earlier in puberty, there may still be more growth ahead.

If it starts later, growth may already be slowing.

Studies have shown that:

• Girls who have their first period at age 10 grow, on average, 4 inches taller
• Girls who have their first period at age 15 will grow 2 inches taller on average

Height is largely influenced by genetics, meaning family patterns can provide clues about expected adult height.

It’s also important to remember that teens often compare themselves to friends, which can cause worry if someone seems taller or is still growing faster.

If your teen is worried about her growth, introducing her to luna will provide her with access to medically approved guidance and support.

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Period tracking & more for teens. Guidance for parents.

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Does early menstruation affect final height?

Early menstruation can sometimes mean that a girl reaches her final height earlier, but it does not necessarily mean she will be shorter overall.

Puberty is influenced by many factors, including genetics, nutrition, and general health.

When puberty begins earlier than average, the growth spurt may also happen earlier.

If menstruation begins very early (before age 8), it may be considered precocious puberty, and a doctor or paediatric specialist might evaluate whether any treatment is needed.

For most families, though, early periods are simply a variation of normal development.

How you can support your daughter when she gets her first period

Starting a period can feel like a major milestone for both parents and teens.

While it often signals that the biggest growth spurt has already happened, it doesn’t mean development is finished, and you still may not be able to tell how tall your daughter will be.

Questions about periods, height, and body changes are extremely common for teens.

Having a space where they can ask these questions and get reliable information can make a big difference. 

On luna, teens can explore answers about puberty, periods, and body changes in a way that feels private, reassuring, and designed specifically for them.

Introducing her to the app can help her feel supported as she navigates growing up. 

Rated 4.8

Period tracking & more for teens. Guidance for parents.

Find out more