If your child is a healthy weight, there's lots you can do as a parent to help them stay a healthy size as they grow.
Research shows that children who stay a healthy weight tend to be fitter, healthier, better able to learn, and more self-confident. They're also much less likely to have health problems in later life.
Children whose parents encourage them to be active and eat well are more likely to stay a healthy weight and grow up healthy.
Check their BMI every now and then using using our BMI calculator to make sure they stay in the healthy range.
Steps for success
Here are five key ways you can help your child maintain a healthy weight. You can read this whole page or click on the links below to go directly to the topic you want to know about:
Be a good role model
One of the best ways to instil good habits in your child is for you to be a good role model. Children learn by example. One of the most powerful ways to encourage your child to be active and eat well is to do so yourself.
Set a good example by going for a walk or bike ride instead of watching TV, or surfing the internet. Playing in the park or swimming with your children shows them that being active is fun. It's also a great opportunity for you all to spend time together.
Children need about 60 minutes of physical activity a day for good health, but it doesn't need to be all at once. Several short 10-minute or even 5-minute bursts of activity throughout the day can be just as good as an hour-long stretch.
For younger children, it can take the form of active play, such as ball games, chasing games like "it" and "tag", riding a scooter, and using playground swings, climbing frames and see-saws.
For older children it could include riding a bike, skateboarding, walking to school, skipping, swimming, dancing and martial arts.
Walking or cycling short distances instead of using the car or bus is a great way to be active together as a family - and you'll save money too.
Try to avoid feeding your child over-sized portions.
There's very little official guidance on precisely how much food children require so you'll need to use your own judgement.
A good rule of thumb is to start meals with small servings and let your child ask for more if they are still hungry.
Try not to make your child finish everything on the plate or eat more than they want to. And avoid using adult-size plates for younger children as it encourages them to eat oversized portions.
It may also help if you encourage your child to eat slowly and have set mealtimes. You can use mealtimes as an opportunity to catch up on what's happened during the day.
Eat healthy meals
Children, just like adults, should aim to eat five or more portions of fruit and vegetables everyday. They're a great source of vitamins, minerals and fibre.
Getting 5 A DAY shouldn't be too difficult. Almost all fruit and vegetables count towards your child's 5 A DAY including fresh, tinned, frozen and dried. Juices, smoothies, beans and pulses also count.
Discourage your child from having too many sugary or high-fat foods like sweets, cakes, biscuits, some sugary cereals and soft drinks. These foods and drinks tend to be high in calories and low in nutrients.
Aim for your child to get most of their calories from healthier foods such as fruit and vegetables, and starchy foods such as bread, potatoes, pasta and rice (preferably wholemeal). And switch sweet drinks for water.
Less screen time and more sleep!
Help your children to avoid sitting and lying around too much, as it makes it more likely for them to put on weight.
Limit the amount of time your child spends on inactive pastimes such as watching television, playing video games and playing on electronic devices.
There's no hard and fast advice on how much is too much, but experts advise that children should watch no more than two hours of television each day - and remove all screens (including mobile phones) from their bedroom at night.
It also helps children stay trim if they sleep well. It's been shown that children who don't have the recommended amount of sleep are more likely to be overweight. The less children sleep, the greater the risk of them becoming obese. Lack of sleep can also affect their mood and behaviour.