Medically reviewed by Daniel Bubnis, M.S., NASM-CPT, NASE Level II-CSS, specialty in fitness — composed by Jenna Fletcher on September 24, 2020

To tell even if it is a young adolescent has actually a healthy weight, the can assist to know the typical for their age and sex. The averages because that 12-year-olds space 89 pounds, because that males, and also 92 pounds, because that females.

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However, beyond biological sex, numerous other components influence someone’s load at this age, including their height, body composition, the beginning of puberty, ecological factors, and underlying health and wellness issues.

Below, we check out the averages and also the components that affect them, making use of statistics from the Centers for condition Control and also Prevention (CDC). We likewise describe some health dangers of having a weight that is significantly below or over average.


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Biological sex plays a role in weight, and also in general, a 12-year-old mrs weighs slightly more than a masculine of the very same age.

When mentioning a children weight, a doctor may refer come a statistic that suggests the portion of others who weigh much less or more.

For example, a kid in the 35th percentile weighs much more than 35% of children of the exact same age and also sex. Through the very same token, castle weight much less than 65% of these peers.

Below, learn an ext about the averages because that 12-year-old males and also females.

Females

According to the CDC, the typical weight that a 12-year-old woman is 92 pounds (lb), or around 42 kilograms (kg).

Below, uncover the average range by percentile:


Percentilelbkg (rounded to nearest value)
95th13561
90th12356
75th10648
50th9242
25th8137
10th7233
5th6831

Males

The CDC report that the average weight the a 12-year-old male is 89 lb, or about 40 kg.

Below, discover the average variety by percentile:


Percentilelbkg (rounded to nearest value)
95th13059
90th11954
75th10347
50th8940
25th7936
10th7132
5th6730

Complications of short or high weight

A doctor may be concerned about the weight and also health the a young adolescent if:

their weight falls past the upper or lower percentiles top top the CDC’s development chartthere has been a drastic readjust in your weight

When your weight drops significantly above or listed below the average, a young adolescent may have actually a risk of wellness complications. We synopsis some examples below.

Complications of low weight

Doctors may use the expression “failure to thrive” as soon as describing a kid with poor weight obtain or sudden load loss. The expression usually uses to babies and also toddlers, though older kids can additionally have an obstacle gaining or keeping weight.

The adhering to are part potential reasons of slow-moving weight gain in children:

Premature birth: This deserve to lead to the underdevelopment of certain muscles. Metabolic disorders: These deserve to interfere through the body’s ability to convert food into energy.Financial difficulties: These have the right to make it complicated for parents and also caregivers to provide sufficient food.

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A child with very low weight may have:

developmental delaysproblems v thinkingbehavioral issuesproblems in ~ schoolbelow-average height

Complications of high weight

Children and young teenagers with overweight or excessive weight may have actually an increased risk of:

anxietylow self-esteem

As the CDC note, kids with weight problems are also more likely to construct severe obesity and associated risk components as adults.