How to know when you stop growing?

Looking at your child growing up day by day is an exciting thing. From birth, their body will change as they progress through adolescence. But then, you might wonder when they will reach their adult height. Follow us and we will give you the necessary information for this topic.

When do you stop growing?

Boys commonly undergo a growth spurt during puberty, between the ages of 12 and 15. During this phase, they can experience significant height gains, with the most rapid growth occurring around age 13.5. However, the pace of growth can vary widely, and some may continue to grow more slowly if their physical development is delayed. Meanwhile, girls often experience a growth spurt, between 9.5 and 13.5 years old. And during this time, they may grow approximately 3½ inches in their peak growth year.

Once the growth plates in the bones fuse, growth stops entirely. This typically happens around age 15 to 17 for boys and 13 to 15 for girls. However, note that individual factors can influence this timeline, leading to variations in growth cessation. That’s why some might reach their peak height by their late teens or early twenties, with girls typically stopping growth around 18 and boys around 20.

How to know when you stop growing?

About girls

Most girls will cease growing in height around two and a half years after the beginning of menstruation. However, menstruation is not the sole factor that height growth has stopped or is nearing its conclusion. Several other signs may suggest a girl has reached her full height or will soon stop growing, including:

  • A very slow or no growth in height for a year or more.
  • Body hair, including public and underarm hair, has stopped growing.
  • Hips, breasts, and genitals are fully grown.
  • The overall appearance looks more adult-like.

Or use medical tests to find out whether a girl has likely stopped growing in height.

  • Determining pediatric bone age requires taking X-ray images of the left hand and wrist. Then compare them against a standardized index to show growth. The result will show skeletal maturity levels, nutrition, and health information.
  • Testing growth hormone levels through a simple blood test also discloses whether a child is growing at an extended average rate compared to the growth charts.

About boys

Similar to girls, boys also experience some signs that indicate them reaching their full height.

  • The easiest and earliest sign is a slowed growth rate. Their growth has stopped if their growth rate starts decelerating significantly or remains stagnant for an extended period.
  • During rapid growth, it is common to see boys outgrow their shoes at an increasing rate. But as growth slows and eventually stops, shoe size tends to stabilize, showing that their feet size has reached the final measurement along with the rest of their body.
  • Subtle changes in posture might become obvious when boys approach the end of their growth phase. These might include a more upright stance, a straightening of the spine, and a greater overall sense of stability and balance.
  • Of course, genetics plays a crucial role in determining a boy’s final height and the timing of growth cessation. If their parents and close relatives are not tall, it is likely that they have inherited their genes and might not grow much taller.


What are height prediction methods?

In fact, there is no precise way to accurately predict how tall a person will be. However, you can apply the common methods below to estimate your final adult height.

Mid-parental height calculator

The first step is to obtain the heights of the father and mother (inches or centimeters). Then add the heights and divide the sum by 2 to get the average height. For boys, add 2.5 inches (or 6.5 centimeters) to the average parental height. For girls, subtract 2.5 inches (or 6.5 centimeters).

However, note that this number is just an approximation rather than an accurate prediction because other factors might affect the final height.

“Two times two” method

This method is a simple approach used to estimate a child’s potential adult height based on their current height at a young age, especially between the ages of 2 and 8. First, double the child’s current height. This step represents an estimation of their height at the beginning of puberty, assuming that they will experience a growth spurt. Then add 2 inches (about 5 centimeters) to the total.

Although it is easy to help you get a good rough estimate, no research has just now demonstrated its accuracy.

Growth charts

Most doctors prefer using growth charts to follow the corresponding curve. For instance, when looking at the CDC growth chart for boys, a 13-year-old who is 5 feet 1 inches (about 61 inches tall) is in the 50th percentile. Based on that curve, 5 feet 9 inches or 5 feet 10 inches (about 69 or 70 inches) are their final adult height.

Also, the CDC growth chart points out the weight-for-age percentile that helps parents estimate what their child might weigh in the future. If following the above example of the 50th percentile, a 13-year-old who weighs about 100 lbs can gain 155 by the time they are an adult (as long as they continue growing at an average pace).

When to see doctors?

If your child’s growth seems slower or faster than their peers, it may not be cause for concern. Children with delayed growth, known as constitutional growth delay, typically experience steady growth and often reach a “normal” adult height. Pediatricians can assess growth using bone age X-rays, which reveal if a child’s growth is on track.

For instance, if a 14-year-old’s bones resemble those of a 12-year-old, they may have several years of growth left. However, falling off the growth curve without catching up could indicate a medical issue like growth hormone deficiency. Delayed puberty in females is characterized by absent breast development by age 13 or no menses by age 15 or 16, while early puberty may manifest as signs at 6 or 7 years old.

Consulting a pediatrician is essential for assessing any changes from the norm and determining if medical intervention, such as growth hormone therapy, is necessary.

In the end,

Growing is a dynamic and multifaceted journey that unfolds differently for each individual. Whether it is reaching new heights in stature or experiencing profound changes in personal development, the signs indicating when growth comes to a halt are as diverse as the paths we traverse. Recognizing these subtle indicators and seeking guidance when needed might empower you to navigate the transitions with grace and understanding. Remember, whether you are reaching new heights or embarking on a new chapter, may you continue to grow and thrive well.

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