Why Are Some Children Slow to Grow in Height? Causes and Remedies

Children who experience slow weight and height gain are a matter of concern for many parents. Short and underweight children not only worry their parents but also make the child feel self-conscious and less confident compared to their peers. So, what are the reasons behind a child’s slow growth in weight and height? Let’s explore this issue and learn how to address it in the following article by Grow Taller Plan!

A child’s height and weight should steadily increase throughout their developmental stages, reflecting normal growth. The growth rate varies among different age groups and even within individuals of the same age, but these differences are usually not significant. However, when a child’s height falls significantly behind that of their same-age peers or the age-appropriate standards, the child may be experiencing a growth delay.

Why Are Some Children Slow to Grow in Height? Causes and Remedies
Why Are Some Children Slow to Grow in Height? Causes and Remedies

What Is Normal Height Growth?

Often, after measuring a child’s height, parents may not have a clear understanding of their child’s height standards according to different age groups, making it challenging to determine whether their child’s height development is normal or not. Typically, height standards for children are defined by the following indicators:

– Infants: Height ranging from 48 to 52 cm, with an average of 50 cm.

– Children aged 0 to 11 months: Typically, children grow by about 20 to 25 cm.

– Children aged 1 to 4 years: Average height increases by about 10 cm per year.

– Children aged 4 to 11 years: Average growth is about 5 to 7 cm per year.

– Adolescents: Experience a significant height growth spurt. Girls grow about 6 to 10 cm per year, while boys grow from 6.5 to 11 cm per year.

What Is Slow Height Growth?

Slow growth, or slow height growth, occurs when a child’s height does not meet the expected growth milestones for their age. For children experiencing this condition, doctors advise parents to bring their child for early evaluation to screen for factors causing slow growth, thereby enabling timely interventions.

Children with slow height growth may exhibit signs such as being shorter than their peers and having a slower growth rate. In cases where a child’s weight is within the standard range, they might appear plumper and their facial features might appear less mature for their age. When parents notice these signs, it is recommended to consult a specialist for a diagnosis and timely treatment. With appropriate intervention, the child can achieve normal height growth as they mature.

In such cases, Grow Taller Plan recommends parents to take their child for a medical evaluation to diagnose and screen for the factors causing slow height growth in order to implement timely interventions.

Signs of Slow Weight Gain in Children Parents Should Be Aware Of

Depending on the child’s gender and age, each developmental stage has different standards for weight and height indicators. For example:

– In the first 3 months, children typically gain an average of 600-800g per month, with some months showing a 1kg increase.

– From 4 to 6 months, children usually gain around 500-600g per month.

– Between 7 and 12 months, children typically gain an average of 400-500g per month.

If a child’s weight is more than 20% below the standard and their height is less than 10% below the average height for their age, these are signs that the child may be experiencing slow development.

When Should Parents Worry About Their Child’s Height?

According to the National Center for Biotechnology Information (NCBI) in the United States, a child is considered to have short stature if their height is less than -2 standard deviations (SD) below the mean (according to Z-scores) or below the 3rd percentile (according to percentiles) compared to their same-age, same-gender peers. Alternatively, if a child’s height remains consistently below the 25th percentile on the growth chart during 6-12 months of observation, even if their height is within the normal range, parents should be concerned. It’s important for parents not to assess their child’s condition based solely on a single point in time but rather to consider the overall growth patterns over different stages.

Causes of Delayed Height Growth in Children

Many parents attribute a child’s slow height growth to inadequate nutrition. However, in addition to nutritional factors, experts have identified several underlying causes, including:

Growth Hormone Deficiency

Growth hormone plays a critical role in a child’s overall development and height. It is secreted by the pituitary gland. Insufficient production of growth hormone by the pituitary gland can lead to a child’s slow height growth. This condition can arise at any point in a child’s life, stemming from congenital factors or due to injuries to the pituitary gland, head trauma, brain tumors, or inflammatory conditions like meningitis or encephalitis. The estimated incidence of growth hormone deficiency is around 1 in 4,000 to 1 in 10,000 children.


Thyroid hormones directly impact a child’s physical development. When the thyroid gland fails to produce enough of these hormones, it can lead to delayed height growth, reduced appetite, stunted growth, and delayed puberty. Various factors can contribute to childhood hypothyroidism, including genetic factors, maternal iodine deficiency during pregnancy, or congenital and acquired thyroid hormone disorders. It is estimated that around 1 in 2,000 to 1 in 3,000 children may experience hypothyroidism, which can affect height growth.


According to a study published by the National Library of Medicine in the United States, genetics can account for up to 80% of an individual’s height. Additionally, numerous common genetic variants, approximately 10,000, have been found to influence a person’s height. Therefore, genetics significantly determine a child’s height development. It is often observed that if parents are of modest height, their children are likely to have corresponding heights, or not significantly taller.

Intrauterine Growth Restriction (IUGR)

During pregnancy, if the mother does not receive adequate nutrition and proper rest, the developing fetus can be affected. This condition is known as intrauterine growth restriction (IUGR), where babies are born with a birth weight less than 2.5 kg. A two-year-old child’s height usually ranges from 85 to 87 cm, which is about 50% of an adult’s height. However, approximately 10% of children who were mildly underweight at birth may not catch up in height growth by the time they turn two, in comparison to children of the same age and gender. This can have serious consequences, as failure to address this early can lead to permanent height loss.

Nutritional Deficiency

Nutrition can determine between 20% to 32% of a child’s adult height, especially during the critical height growth phases, including the prenatal stage, infancy (0-3 years), and the onset of puberty. To support height development, children need high levels of calcium, phosphorus, magnesium, and vitamin D3. If the diet lacks these essential nutrients, a child’s body will begin to withdraw calcium from their bones to meet its needs, eventually leading to conditions such as rickets, stunted growth, and malnutrition, hindering normal growth.

Chromosomal Abnormalities

Certain congenital syndromes such as Down syndrome, Turner syndrome, Klinefelter syndrome, Noonan syndrome, and others result from chromosomal abnormalities that impact a child’s development. For instance:

– Down Syndrome: Children with Down syndrome have an extra chromosome 21, leading to intellectual disability, small brain size, impaired learning ability, and short stature.

– Turner Syndrome: This disorder affects the X chromosomes in females, resulting in spinal deformities, a short neck, webbed neck, pointed chin, and typically shorter stature compared to same-age, same-gender individuals, with a height difference of up to 45 cm.

– Noonan Syndrome: It is a genetic disorder inherited through a recessive gene, causing many affected children to have normal height at birth, but their growth becomes progressively slower as they age. Approximately 50-70% of children with Noonan syndrome have a – zpetite stature.


Certain types of anemia, such as hemolytic anemia, sickle cell anemia, and iron-deficiency anemia when prolonged, can also lead to delayed height growth in children.

Research suggests that prolonged anemia can result in reduced production of growth hormone IGF-I (Insulin-like Growth Factor-1) in a child’s body. IGF-I is a hormone that stimulates cell division (mitosis) and cell differentiation, which can lead to delayed growth, weight gain, and height.

Chronic Medical Conditions

Children with various chronic conditions affecting the heart, kidneys, digestive system, or lungs will inevitably experience physical growth impairment due to disorders like malabsorption, metabolic disorders, heart rhythm abnormalities, and metabolic disturbances. Common chronic medical conditions that can impact a child’s height include:

– Heart disease

– Asthma

– Inflammatory bowel disease

– Diabetes

– Kidney disease

– Juvenile idiopathic arthritis (JIA)

Screening and Treatment for Children with Delayed Height Growth

Screening and treatment for children with delayed height growth fall under the expertise of nutritionists and general practitioners. During the screening for delayed height growth, physicians conduct clinical examinations, measure the child’s height and weight, and may perform various clinical tests such as blood tests, cranial MRI, bone age X-rays, etc. to accurately determine the underlying cause of the growth delay in children. This information helps in tailoring an appropriate treatment plan.

Furthermore, many underlying factors causing delayed growth in children can only be detected through modern quantitative diagnostic equipment available in hospitals. These factors may include growth hormone deficiency (GH, IGF-1, etc.) or nutritional deficiencies (including vitamin and mineral deficiencies).

Therefore, when parents observe signs of delayed height growth in their children, it is crucial not to self-administer over-the-counter height-boosting medications at home. Instead, they should take the child to the nearest hospital for a precise diagnosis and timely treatment.

The Crucial Role of Early Screening for Delayed Height Growth

There are various factors contributing to delayed height growth in children, and each cause may require a different treatment approach. Therefore, early screening for signs of delayed height growth in children allows parents and physicians to accurately identify the cause of the growth delay and implement timely interventions.

According to experts, growth generally stops when the child’s bone age reaches 14-15 years in boys and 15-16 years in girls. At this point, the growth hormone treatment may have little effect.

Hence, if parents identify signs of delayed height growth too late, such as discovering it after the age of 15, it can result in the child missing out on potential height gains. Therefore, early screening, diagnosis, and timely treatment will optimize the child’s chances for achieving their full growth potential.

What to Do About a Child with Delayed Height Growth?

In addition to providing proper nutrition for your child, parents should also pay attention to daily habits that can impact their child’s height growth. Here are some effective measures that parents should be aware of:

Balanced Nutrition Rich in Calcium and Vitamin D3

Calcium constitutes 40% of the total weight of bones in the body and exists as Calcium Hydroxyapatite [Ca10(PO4)6(OH)2]. Hence, it is safe to say that calcium is the most important mineral contributing to robust bone structure.

The development of height is directly related to the lengthening of bones. This, in turn, increases the body’s need for calcium, especially during the periods from 0 to 3 years old and adolescence.

A diet rich in calcium ensures that bones receive an ample supply of calcium for growth. Failing to provide enough vitamin D to the body can lead to calcium absorption issues, elevating parathyroid hormone levels in the bloodstream, which can result in weakened bones, stunted bone growth (smaller diameter), or slow longitudinal bone growth, causing delayed height growth in children.

Divide Your Child’s Meals

Instead of forcing your child to overeat during three main meals, which can lead to food aversion, parents should give their child appropriate portions and supplement them with 2 to 3 additional snacks throughout the day. This approach can activate the body’s metabolism, enhance calcium and vitamin D absorption, and provide the child with the necessary energy for daily activities.

Establish a Healthy Routine

Bones don’t grow while a child is awake. The body can only develop when a child is asleep. Therefore, the most crucial aspect to instill in children from 2 to 4 years old is a healthy sleep schedule, ensuring they get sufficient and quality sleep.

The ideal sleep schedule for children is from 10 p.m. to 6 a.m., allowing them to get a full 8 hours of sleep every day. Proper sleep at the right time is essential for the child’s body to produce growth hormone GH, stimulating height development.

Regular Physical Exercise

Engaging in physical activity is a significant step toward height growth. According to research, regular physical exercise stretches muscle and bone joints, stimulating the body to release more growth hormone GH, ultimately promoting effective height growth.

Children can participate in sports clubs or training centers for physical activities. Additionally, parents should encourage their children to engage in outdoor activities to boost vitamin D synthesis in the body.

Limit Exposure to Electronic Devices

Extensive use of phones, TV, or electronic devices can not only harm a child’s vision but also encourage poor posture that obstructs bone development, such as neck curvature or spinal deformities caused by constantly looking down at screens.

Therefore, parents should limit their child’s exposure to technology to ensure that the skeletal frame develops more stably, reducing the risks of delayed height growth.

Maintain Proper Posture for Your Child

A hunched back, forward head posture, or a curved spine can make a child appear shorter than their actual height. Therefore, teaching your child to walk, stand, or sit properly is essential to promote their height growth.

Without maintaining the right posture, a child’s spine can become compressed or weakened, which not only affects delayed height growth but can also lead to poor posture in the future.

These are the general guidelines for addressing delayed height growth in children that parents should be aware of. In summary, to identify the condition of delayed height growth in children early, parents should consult healthcare centers when they notice that their child is shorter than their peers of the same age. This early action will facilitate timely bone and joint assessments, enabling the implementation of improvement measures to ensure comprehensive development. Additionally, parents should focus on enhancing their child’s daily diet and ensuring adequate nutrition to prevent delayed height growth, offering their child the best opportunity for optimal height development.


1. What is considered a normal growth rate for children?

The growth rate of children can vary depending on their age and gender. Generally, infants grow faster in their first year, with an average of 600-800g (1.3-1.8 pounds) per month in the first three months. From 4-6 months, they typically grow at a rate of 500-600g (1.1-1.3 pounds) per month, and from 7-12 months, it’s around 400-500g (0.88-1.1 pounds) per month. However, these figures can vary among children.

2. What are the signs that my child might be growing slowly in height?

Signs that a child might be growing slowly in height include being more than 20% lighter than the standard weight and shorter by more than 10% than the average height for their age and gender.

3. When should I be concerned about my child’s height?

You should be concerned about your child’s height if they fall below the -2 SD (standard deviation) for height according to growth charts or if their height falls below the 3rd percentile when compared to other children of the same age and gender. It’s also important to consider the trend of growth over time rather than just a single measurement.

4. What factors can contribute to slow growth in children?

There are various factors that can contribute to slow growth in children, including:

– Insufficient growth hormones produced by the pituitary gland.

– Thyroid disorders affecting growth.

– Genetic factors, as genetics play a significant role in determining a child’s height.

– Poor fetal development due to maternal malnutrition and lack of essential nutrients during pregnancy.

– Nutritional deficiencies in early childhood.

– Chronic medical conditions such as heart disease, asthma, and inflammatory bowel disease can affect growth.

5. Can slow growth in height be treated?

Slow growth in height can often be addressed. However, the treatment depends on the underlying cause. Some cases may require hormone therapy, dietary adjustments, and lifestyle changes.

6. At what age does a child’s height growth typically stop?

The growth plates of the bones usually close around 14-15 years old in boys and 15-16 years old in girls. Once these plates close, the effectiveness of growth hormone treatment is greatly reduced.

7. How can parents support their child’s height growth?

To support a child’s height growth, parents can:

– Ensure their child receives a balanced diet rich in calcium and vitamin D.

– Divide their child’s meals into multiple portions throughout the day.

– Establish a healthy sleep schedule with enough quality sleep.

– Encourage regular physical exercise.

– Limit a child’s exposure to electronic devices and promote good posture.


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