image

health as it happens

New weight-loss tool prevents mouth from opening more than 2mm - The Guardian

A weight-loss tool that uses magnets to stop people from opening their mouths wide enough to eat solid food has been developed by scientists in order to tackle obesity.

The device, developed by medical professionals from the University of Otago in New Zealand and scientists from Leeds in the UK, can be fitted by dentists and uses magnetic components with locking bolts.

It has been criticised online, however, with people likening it to a medieval torture device.

The University of Otago tweeted that it was “a world-first” weight-loss device “to help fight the global obesity epidemic: an intra-oral device that restricts a person to a liquid diet.”

Called the DentalSlim Diet Control, the device allows its users to open their mouths only 2mm wide. Initially, it was trialled on seven otherwise healthy obese women from Dunedin in New Zealand for two weeks, who were given a low-calorie liquid diet.

An article published in the British Dental Journal reported that the group of women lost a mean amount of 6.36kg – about 5.1% of their body weight.

But participants complained that the device was hard to use, causing discomfort with their speech. They said they felt tense and that “life in general was less satisfying”.

One participant did not follow the rules and instead consumed foods they were not supposed to, such as chocolate, by melting them.

Prof Paul Brunton from the University of Otago said the main barrier that stopped weight loss was “compliance”. He said that the tool helped to establish new habits that could kickstart the process”.

He said: “It is a non-invasive, reversible, economical and attractive alternative to surgical procedures.”

The DentalSlim Diet Control has received criticism online, with people on Twitter saying: “You don’t need this torture device to go on a liquid diet.”

The University of Otago said: “To clarify, the intention of the device is not intended as a quick or long-term weight-loss tool. Rather, it is aimed to assist people who need to undergo surgery and who cannot have the surgery until they have lost weight.”

The research team behind the product included Dr Jonathan Bodansky of Leeds and Dr Richard Hall of RMH consultancy in Leeds.

… as you're joining us from France, we have a small favour to ask. We’d like to thank you for putting your trust in our journalism this year - and invite you to join the million-plus people in 180 countries who have recently taken the step to support us financially, keeping us open to all, and fiercely independent.

In 2021, this support sustained investigative work into offshore wealth, spyware, sexual harassment, labour abuse, environmental plunder, crony coronavirus contracts, and Big Tech.

The new year, like all new years, will hopefully herald a fresh sense of cautious optimism, and there is certainly much for us to focus on in 2022 - a volley of elections, myriad economic challenges, the next round in the struggle against the pandemic and a World Cup.

With no shareholders or billionaire owner, we can set our own agenda and provide trustworthy journalism that’s free from commercial and political influence, offering a counterweight to the spread of misinformation. When it’s never mattered more, we can investigate and challenge without fear or favour.

Unlike many other media organisations, Guardian journalism is available for everyone to read, regardless of what they can afford to pay. We do this because we believe in information equality. Greater numbers of people can keep track of global events, understand their impact on people and communities, and become inspired to take meaningful action.

If there were ever a time to join us, it is now. Every contribution, however big or small, powers our journalism and sustains our future. Support the Guardian from as little as €1 – it only takes a minute. If you can, please consider supporting us with a regular amount each month. Thank you.

Accepted payment methods: Visa, Mastercard, American Express and PayPal