If your child is obese or
overweight, they have an increased risk of developing various health problems.
They are also more likely to become an overweight or obese adult. If overweight
and obesity is treated in childhood, some of these health problems may be
reversed, or even prevented. Your child is also more likely to grow into an
adult with a healthy weight. The main way to treat a child who is overweight or
obese is to look at changes that can be made to their lifestyle. Such changes
include eating more healthily and doing plenty of physical activity. Changes
that involve the whole family are best.
How do you know if your child is overweight or obese?
If your child is obese or
overweight, this means that they are carrying excess body fat. If nothing is done
about this, the extra weight that they are carrying may cause problems for
their health.
Doctors, nurses and other
healthcare professionals can look to see whether your child is overweight or
obese by calculating their body mass index (BMI). BMI is a measurement of your
child's weight in relation to their height. However, it is important to know
that a child's BMI is not interpreted in the same way as an adult's BMI.
Instead, their BMI is charted on special growth charts. These charts can show
how your child's BMI compares with the normal range for children of a similar
age, sex and ethnic background. For infants between the ages of 2 weeks and 4
years, the UK-WHO charts are used. For 5-19 year olds, the WHO centile charts
are used.
Your child's doctor, nurse or
other healthcare professional can check your child's BMI against these centile
charts to determine if they are overweight or obese. See our BMI Calculator or
go to www.mendcentral.org/aboutobesity/bmicalculator for a calculator
specifically designed for children.
What are the health risks for
your child of being overweight or obese?
Children who are overweight or
obese can develop health problems during childhood because of their weight.
Health problems can include type 2 diabetes, high blood pressure, fatty liver
disease, gallstones and signs of heart disease. The worrying thing is that such
health problems have traditionally been problems just affecting adults, with
overweight and obese adults having an increased risk of developing them. But
because of the rises in the levels of childhood obesity, these obesity-related
health problems are affecting younger and younger people.
A child who is overweight or
obese also has an increased risk of:
Joint problems, including
osteoarthritis and separation of the ball of the hip joint from the upper end
of the thigh bone (slipped capital femoral epiphysis).
Going through puberty early.
Breathing problems, including
worsening of asthma, obstructive sleep apnoea (difficulties with your child's
breathing whilst they are asleep) and feeling out-of-breath easily when they
are exercising.
Developing iron deficiency and vitamin D deficiency.
Being overweight or obese as an
adult (more than half of children who are obese will grow up to be obese as
adults).
Being overweight or obese as a
child or teenager can also have psychological effects for some. It can lead to
low self-esteem and a lack of confidence. A child may be subject to bullying
because of their weight. They may become withdrawn and avoid social contact. It
may lead to low mood and, in severe cases, depression.
If overweight and obesity are
recognised and treated in childhood and the teenage years, some of these health
problems may be reversed, or even prevented. The child is also more likely to
grow into an adult who has a healthy weight.
How common is obesity and
overweight in children?
The most recent figures show that
about 1 in 3 children in the UK are overweight or obese. The increase in
obesity seems to be flattening out in the UK but continues to rise in other
parts of Europe and North America. The rapid rise in obesity seen since the
1970s has been termed the obesity epidemic.
What is the cause of being overweight or obese in children?
For anyone (including children),
your weight depends on how much energy you take in (the calories in food and
drink) and how much energy your body uses (burns) up:
If the amount of calories that
you eat equals the amount of energy that your body uses up, then your weight
remains stable.
If you eat more calories than you
burn up, you put on weight. The excess energy is converted into fat and stored
in your body.
If you eat fewer calories than
you burn up, you lose weight. Your body has to tap into its fat stores to get
the extra energy it needs.
The reasons why energy taken in
may not balance energy used up and may lead to weight gain in children, include
the following:
How much a child eats and drinks
Many children are overweight or
obese simply because they eat and drink more than their body needs. Having too
many foods or drinks that are too sugary or fatty is a common problem.
A lack of physical activity
A child may be eating the right
type and the right amount of food but, if they are not doing enough physical
activity, they may put on weight. Long periods without exercise also
contributes, for example spending many hours watching television or playing
video games. Having parents who are inactive can also increase a child's risk
of being overweight or obese.
Your parents
Being overweight or obese does
run in families. It is thought that 5 out of 10 children who have one parent
who is obese will become obese themselves. And 8 out of 10 children who have
two parents who are obese will also become obese themselves.
This may partly be due to
learning bad eating habits from your parents as a child. But, some people
actually inherit a tendency in their genes that makes them prone to overeating.
It is not fully understood how this genetic factor works. It has something to
do with the control of appetite. When you eat, certain hormones and brain
chemicals send messages to parts of your brain to say that you have had enough
and to stop eating. In some people, this control of appetite and the feeling of
fullness (satiety) may be faulty, or not as good as it is in others.
However, if you do inherit a
tendency to overeat, it is not inevitable that you will become overweight or
obese. You can learn about the power of your appetite, ways to resist it, be
strict on what you eat and do some regular physical activity. But you are
likely to struggle more than most people where your weight is concerned. You
may find it more difficult to stop yourself from gaining weight or to lose
weight.
Research has also shown that
children who are born to mothers who are overweight, or mothers who develop
diabetes during their pregnancy, are more likely to be overweight or obese
themselves.
Lack of sleep
Not getting enough sleep has been
suggested as another possible risk factor for obesity in children. There seems
to be a trend of children going to bed later but, also, too little physical
exercise can lead to poor sleep.
Two hormones called leptin and
ghrelin may be important here. Leptin is released by fat cells to tell your
brain that fat stores are sufficient. Ghrelin is released by your stomach as a
signal of hunger. In someone who does not have enough sleep, leptin levels are
low and ghrelin levels are high. These changes in hormone levels may encourage
a child to eat more.
Medical problems
Rarely, a child has a medical
cause for being overweight or obese. For example, there are some rare genetic
diseases that can cause overweight and obesity in children. Conditions such as
an underactive thyroid gland (hypothyroidism) or other hormone problems may
also be a cause. Some medicines can also make children more likely to put on
weight. However, in general, a medical cause for being overweight or obese is
the exception in children.
What should I do if I am worried that my child is overweight or obese?
If you are worried that your
child may be overweight or obese, you can discuss this with your doctor,
practice nurse or another healthcare professional that you trust. They may be
able to suggest ways in which you can help your child, or refer you to other
professionals who may be able to help. There may be some specific schemes or
services in your local area specially set up to help prevent or manage
overweight and obesity in children. For example, there may be a healthy living
programme in your area such as a MEND course (see link below). Your child's
healthcare professional should be able to advise about this.
Children who are seriously
overweight may be referred by their doctor to a special clinic at a hospital.
Usually, such clinics have a team of doctors, nurses and other healthcare
professionals who are experts in dealing with overweight and obesity in
children. However, many overweight children do not need to be referred for
specialist care.
How much weight should a child lose if they are overweight or obese?
In general, rapid weight loss or
strict dieting is not recommended for children who are still growing, unless
this has been specifically advised by a specialist. For most children, the aim
is usually to keep the weight at the same level rather than weight loss. As
they grow and their height increases, the child should either not gain any
weight as well or their weight gain should be slower than their height gain.
Sometimes, if teenagers have stopped growing, weight loss of around 0.5 kg per
week may be appropriate. Your child's healthcare professional will be able to
advise what is best for them.
What is the treatment for a child who is overweight or obese?
The main way to treat a child who
is overweight or obese is to look at changes that can be made to their
lifestyle. Changes that involve the whole family are best. Other family members
who are overweight may also benefit at the same time. Remember that as a parent
or carer, you act as an important role model for your child and you can help
them to stay healthy.
The two main lifestyle changes
that are advised are for your child to eat more healthily and do plenty of
physical activity. Small, gradual changes may be best. Your child will then be
more likely to stick to these changes in the long-term.
As a parent or carer, you should try to be
involved as much as possible in helping your child make these changes. However,
some older teenagers may prefer to take responsibility for themselves. Think
about how your child's progress is going to be monitored. Discuss this with
their healthcare professional
Ed: guest post in honour of National Children's Day yesterday
For full article: http://www.patient.co.uk/health/obesity-and-overweight-in-children