Breathalysers that analyze your breathing and suggest what you should eat

Two devices that badyze people's respiratory gases promise to show how they can improve their diet.

Lumen and FoodMarble, which function as "breathalyzers," are handheld devices presented at the CES Technology Show in Las Vegas, USA.

They pair with smartphone apps that tell their users how to digest food or burn calories.

But, according to experts, this technology has not yet been validated by scientists.

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Lumen reported nearly $ 2 million (about 7.4 million RS) at the Indiegogo crowdfunding site. The company has designed a product in the form of an inhaler to measure the levels of carbon dioxide in the breath.

According to the company, this provides a way to monitor a person's metabolism – the set of chemical processes that, among other things, converts food into energy.

"You do not have to guess the amount of sugar contained in this Kung Pao chicken nor the number of calories you have burned during this period," explained Dror founder Cedar

Instead, he explains to the BBC, the application says if the user burns carbohydrates or fat. He then suggests recipes that help burn fat and, over time, Lumen learns, according to the manufacturer, which diet is best for each individual.

Scientific Validation

According to Cedar, hundreds of users in the United States have tested the device. However, studies measuring the effectiveness of the product have not yet been reviewed by field researchers.

The lumens will go on sale at a price of 299 USD (R $ 1,104) in the months to come. The application may charge a subscription fee in the future, but will be free for the first year.

FoodMarble measures hydrogen levels to try to infer the digestive health of those who use it. Founder Lisa Ruttledge told the BBC that the levels of hydrogen in the breath could indicate that someone else The FoodMarble founder says her digestive health can be determined simply by detecting hydrogen in his breath.

"This happens because your gut is fermenting and that part of the hydrogen created during this process is exhaled," he said.

The idea is to help people suffering from swelling, abdominal pain and other gastrointestinal symptoms to improve their nutrition. By introducing foods that produce hydrogen, FoodMarble could help its users create healthier diets.

However, although these tests are sometimes used by doctors and nutritionists, some doubt their accuracy.

"There is little scientific evidence that these hospital-based tests can be used to determine which foods you are sensitive to," said Kevin Whelan, professor of dietetics at King's College of Medicine. London. Several factors can affect breathing, including the time needed to digest a meal, which is not always the same.

Lisa Ruttledge said that one of her company's goals is to make FoodMarble the first device of its kind. to be evaluated as part of a scientific study

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