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A Japanese study of nearly 60,000 diabetic patients shows that those eating slowly are thinner. A meal taken in slow motion would be more effective at being satiated. So, to lose weight, it is better to eat less quickly.
Those who slow down the rate at which they eat tend to lose weight, according to a Japanese research done on diabetics. The study, published by the journal BMJ Open, about 60,000 people, shows a link between the speed at which participants say swallow their meal and changes in weight.
"Changes in the speed at which we eat can lead to changes in obesity, BMI [body mass index] and waist circumference," researchers at Kyushu University in Japan said. "Interventions to reduce the speed of meals can be effective in preventing obesity," they said.
They were interested in medical records, between 2008 and 2013, of 59,717 people with type 2 diabetes, a disease that often results from a problem of overweight. People who say they eat "slowly" (7% of them) had a lower waist circumference on average. Only 21.5% were overweight (a BMI greater than 25).
Among those who reported eating at "normal" (56%) and "fast" (37%), overweight was more prevalent, with 36.5% and 44.4%, respectively. And they had a higher BMI.
But most of all, those who slowed down tended, according to researchers, to lose weight. Two other dietary advice also allowed it: do not eat after the evening meal, or in the two hours before bedtime.
"This is an interesting study, [which] confirms what we already think, that eating slowly is less weight gain than eating fast," said Simon Cork of Imperial College. from London. According to him, "it is probably due to the signals sent by the digestive system that communicate to the brain that we are satiated in time to limit the amount ingested". But he stressed that it was "highly subjective" to ask people how fast they ate.
For Susan Jeb, professor of dietetics in Oxford, "the problem that remains" is how to effectively inculcate the habit of eating slowly. Katarina Kos, Obesity Specialist at the University of Medicine in Exeter (UK), said it would be interesting to conduct the study on a larger population, not necessarily diabetic, to see if the weight loss found in the Japanese study was not attributable to treatment for this disease.
WHAT YOU MUST REMEMBER
Researchers have followed nearly 60,000 diabetic patients over five years.
Those who ate slowly were less often overweight.
Those who slowed down tended to lose weight.
Source: http://bmjopen.bmj.com/content/8/1/e019589
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