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Speed of eating 'key to obesity' | Speed of eating 'key to obesity' |
(about 9 hours later) | |
Wolfing down meals may be enough to nearly double a person's risk of being overweight, Japanese research suggests. | Wolfing down meals may be enough to nearly double a person's risk of being overweight, Japanese research suggests. |
Osaka University scientists looked at the eating habits of 3,000 people and reported their findings in the British Medical Journal. | Osaka University scientists looked at the eating habits of 3,000 people and reported their findings in the British Medical Journal. |
Problems in signalling systems which tell the body when to stop eating may be partly responsible, said a UK nutrition expert. | Problems in signalling systems which tell the body when to stop eating may be partly responsible, said a UK nutrition expert. |
He said deliberately slowing down at mealtimes might impact on weight. | He said deliberately slowing down at mealtimes might impact on weight. |
The old wives' tale about chewing everything 20 times might be true - if you did take a bit more time eating, it could have an impact Professor Ian McDonaldNottingham University | The old wives' tale about chewing everything 20 times might be true - if you did take a bit more time eating, it could have an impact Professor Ian McDonaldNottingham University |
The latest study looked at the relationship between eating speed, feelings of "fullness" and being overweight. | The latest study looked at the relationship between eating speed, feelings of "fullness" and being overweight. |
Just under half of the 3,000 volunteers told researchers they tended to eat quickly. | Just under half of the 3,000 volunteers told researchers they tended to eat quickly. |
Compared with those who did not eat quickly, fast-eating men were 84% more likely to be overweight, and women were just over twice as likely. | Compared with those who did not eat quickly, fast-eating men were 84% more likely to be overweight, and women were just over twice as likely. |
Those, who, in addition to wolfing down their meals, tended to eat until they felt full, were more than three times more likely to be overweight. | Those, who, in addition to wolfing down their meals, tended to eat until they felt full, were more than three times more likely to be overweight. |
Stomach signals | Stomach signals |
Professor Ian McDonald, from the University of Nottingham, said that there were a number of reasons why eating fast could be bad for your weight. | Professor Ian McDonald, from the University of Nottingham, said that there were a number of reasons why eating fast could be bad for your weight. |
He said it could interfere with a signalling system which tells your brain to stop eating because your stomach is swelling up. | He said it could interfere with a signalling system which tells your brain to stop eating because your stomach is swelling up. |
He said: "If you eat quickly you basically fill your stomach before your gastric feedback has a chance to start developing - you can overfill the thing." | He said: "If you eat quickly you basically fill your stomach before your gastric feedback has a chance to start developing - you can overfill the thing." |
He said that rushing meals was a behaviour that might have been learned in infancy, and could be reversed, although this might not be easy. | He said that rushing meals was a behaviour that might have been learned in infancy, and could be reversed, although this might not be easy. |
"The old wives' tale about chewing everything 20 times might be true - if you did take a bit more time eating, it could have an impact." | "The old wives' tale about chewing everything 20 times might be true - if you did take a bit more time eating, it could have an impact." |
'Biological imperative | 'Biological imperative |
In an accompanying editorial, Australian researchers Dr Elizabeth Denney-Wilson and Dr Karen Campbell, said that a mechanism that helps make us fat today may, until relatively recently, have been an evolutionary advantage, helping us grab more food when resources were scarce. | In an accompanying editorial, Australian researchers Dr Elizabeth Denney-Wilson and Dr Karen Campbell, said that a mechanism that helps make us fat today may, until relatively recently, have been an evolutionary advantage, helping us grab more food when resources were scarce. |
They said that, if possible, children should be encouraged to eat slowly, and allowed to stop when they felt full up at mealtimes. | They said that, if possible, children should be encouraged to eat slowly, and allowed to stop when they felt full up at mealtimes. |
Dr Jason Halford, Director of the Kissileff Human Ingestive Behaviour Laboratory at the University of Liverpool, said that the way we eat was slowly being seen as a key area in obesity research, especially since the publication of studies highlighting a genetic variant linked to "feelings of fullness". | Dr Jason Halford, Director of the Kissileff Human Ingestive Behaviour Laboratory at the University of Liverpool, said that the way we eat was slowly being seen as a key area in obesity research, especially since the publication of studies highlighting a genetic variant linked to "feelings of fullness". |
His own work, recently published in the Journal of Psychopharmacology, found that anti-obesity drug sibutramine worked by slowing down the rate at which obese patients ate. | His own work, recently published in the Journal of Psychopharmacology, found that anti-obesity drug sibutramine worked by slowing down the rate at which obese patients ate. |
He said: "What the Japanese research shows is that individual differences in eating behaviour underlie over-consumption of food and are linked to obesity. | He said: "What the Japanese research shows is that individual differences in eating behaviour underlie over-consumption of food and are linked to obesity. |
"Other research has found evidence of this in childhood, suggesting that it could be inherited or learned at a very early age." | "Other research has found evidence of this in childhood, suggesting that it could be inherited or learned at a very early age." |
He said that there was no evidence yet that trying to slow down mealtimes for children would have an impact on future obesity rates. | He said that there was no evidence yet that trying to slow down mealtimes for children would have an impact on future obesity rates. |
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