While technology is often blamed for poor health in children, new research suggests these same devices may be part of the solution.
A global review from the University of South Australia, analysing data from more than 133,000 young people under 18, found that health apps, wearables, and interactive programmes can help improve physical activity, diet, and weight outcomes.
The analysis of 25 systematic reviews found that digital health tools delivered significant benefits:
- More activity: Children using the tools showed boosts in moderate and vigorous physical activity, adding roughly 10 to 20 extra minutes per day.
- Better diets: Apps and online programmes helped children eat more fruit and vegetables while cutting back on fatty foods.
- Less sedentary time: Some programmes helped children spend about 20 to 25 minutes less per day sitting or on screens.
- Healthier weight: Participants showed small but steady improvements in body weight and body fat levels.
The review also found that mobile apps had the greatest impact on diet and weight outcomes, while wearables, such as fitness trackers, were most effective in reducing sedentary time.
“Because children and teens have grown up with technology, they’re naturally open to using apps,” said lead researcher Dr Ben Singh. “They’re accessible, engaging, and easy to scale, which makes them a great choice for schools and community programs to promote healthier lifestyles.”
Shorter exercise programmes of eight weeks or less had the biggest effect on boosting activity, while longer programmes running 12 weeks or more were better for weight management.
The findings come as lives become “increasingly sedentary through the use of motorised transport and the increased use of screens for work, education and recreation,” according to the World Health Organisation (WHO). The WHO reports that 80 per cent of adolescents do not meet recommended levels of physical activity.
“These online tools worked as well as, and sometimes better than, traditional in-person health programs,” Dr Singh said. “If we can encourage the use of healthy digital tools from a young age, we have a real opportunity to help children and teens form healthier habits that last a lifetime.”
