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How dentists could help tackle obesity in children

As a specialty registrar in paediatric dentistry, I’ve seen first-hand the pain children experience because of poor oral health. Tooth decay happens when teeth are damaged by acids produced by oral bacteria breaking down sugar from foods and drinks – and although it’s largely preventable – it’s the most common reason for hospital admission in children aged between five and nine in England.

Tooth decay in children is also linked to obesity. Childhood obesity increases the risk of developing other diseases throughout childhood and into adulthood, including diabetes, high blood pressure and non-alcoholic fatty liver disease.

My research, conducted with colleagues at Loughborough University, explores how acceptable and feasible it is for dental teams to offer weight checks and support, such as referral to weight loss programmes, to patients during routine appointments. In my job as a paediatric dentist, I discuss weight and health with families and offer referral to local healthy lifestyle services.

The World Health Organization estimates that 43% of children have decay worldwide and 20% of children aged 5-19 years are overweight or living with obesity.

In England, 29.3% of five-year-olds have tooth decay and 21.3% of four and five year olds are overweight or living with obesity. A diet high in sugary foods and drinks increases the risk of developing both conditions. and evidence suggests that children who are overweight or living with obesity are more likely to have tooth decay.

Mouth disease is also linked with disease in other parts of the body. Gum disease, for example, is an infection of the tissues that support teeth, which has links with type 2 diabetes. When one disease is poorly controlled, it can make the other worse. The number of children with type 2 diabetes is increasing, with excess weight increasing the risk of developing this condition.

Given the links between diet, tooth decay, obesity, type 2 diabetes, as well as other diseases that can develop when living with obesity, dental teams may be ideal professionals to tackle both tooth decay and obesity. It can be difficult to see an NHS dentist in the UK but NHS dental teams do see millions of children every year and already advise families on reducing sugary foods and drinks in the diet to reduce the risk of tooth decay.

Dental teams taking body measurements is not new. Height and weight measurements to calculate body mass index (BMI), a measure of body fat, are already collected by some dental teams. These measurements are helpful when prescribing medication and for planning dental treatment for children who need a general anaesthetic or sedation.

Some hospital dental teams, such as in Edinburgh and Dundee in Scotland, also offer weight and height checks for children and young people as part of routine appointments. The child’s weight is discussed with the child’s parent or carer in a sensitive way and families are offered referral to a local service to support healthy lifestyle changes.

This opportunity to support a child with their oral health as well as weight aligns with the NHS initiative, Making Every Contact Count. Making Every Contact Count calls on all health care professionals to take every opportunity within their appointments with patients to help improve patient health.

Children living in more deprived areas of the UK are at least twice as likely to be living with overweight and obesity. They’re also three times as likely to have tooth decay. The NHS aims to reduce these inequalities among children and has chosen oral health and diabetes as two key areas to improve care for children and young people.

Continues…

For the full article by Jessica Large, Doctoral Researcher at Loughborough University’s Centre for Lifestyle Medicine and Behaviour (CLiMB), visit The Conversation here:

www.theconversation.com/how-dentists-could-help-tackle-obesity-in-children-252258

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Notes for editors

Press release reference number: 25/57

Loughborough is one of the country’s leading universities, with an international reputation for research that matters, excellence in teaching, strong links with industry, and unrivalled achievement in sport and its underpinning academic disciplines. 

It has been awarded five stars in the independent QS Stars university rating scheme and named the best university in the world for sports-related subjects in the 2025 QS World University Rankings – the ninth year running. 

Loughborough is ranked 6th in The UK Complete University Guide 2025, 10th in the Guardian University League Table 2025 and 10th in the Times and Sunday Times Good University Guide 2025.  

Loughborough was also named University of the Year for Sport in the Times and Sunday Times Good University Guide 2025 - the fourth time it has been awarded the prestigious title.  

Loughborough is consistently ranked in the top twenty of UK universities in the Times Higher Education’s ‘table of tables’, and in the Research Excellence Framework (REF) 2021 over 90% of its research was rated as ‘world-leading’ or ‘internationally-excellent’. In recognition of its contribution to the sector, Loughborough has been awarded seven Queen's Anniversary Prizes. 

The Loughborough University London campus is based on the Queen Elizabeth Olympic Park and offers postgraduate and executive-level education, as well as research and enterprise opportunities. It is home to influential thought leaders, pioneering researchers and creative innovators who provide students with the highest quality of teaching and the very latest in modern thinking. 

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