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Healthy diets 09 November 2015
How ‘food words’ may trigger unhealthy eating New studies suggest that obese people respond to food cues differently to lean people, which could prompt them to eat more.
Certain food words can interact with stress and genetics to trigger unhealthy eating, two new studies suggest.
The findings were presented this week at Obesity Week, a meeting in Los Angeles hosted by the American
Society for Metabolic and Bariatric Surgery and The Obesity Society.
Altered responses to ‘high-calorie’ words
One study included 17 obese people and 12 normal-weight people whose brain activity was monitored while they looked at words describing high and low-calorie foods.
“Our study found that individuals with obesity had a stronger response to words associated with high-calorie foods such as chocolate spread and chicken wings in a widespread neural circuit spanning multiple areas of the brain,” study leader Susan Carnell said in an Obesity Society news release.
Read: Americans eat all day long
Stress made the obese participants more likely to want high-calorie foods.
“When we subjected individuals to a combined social and physiological stressor, both individuals with obesity and those of normal weight showed slightly altered responses to high-calorie food words, but only those with obesity ate more at a subsequent meal,” said Carnell. She is an assistant professor of psychiatry and behavioural sciences at Johns Hopkins University School of Medicine in Baltimore.
She said this suggests that obese people respond to food cues differently than lean people, which could lead them to eat more.
In the second study, Carnell and colleagues found a link between responses to food words and obesity risk in teens with genetic variants that increase the risk of obesity.
New ways to combat obesity
“Our study provides additional insight into how these particular obesity-associated genetic variants may be working by increasing appetite and food intake,” study research coordinator Leora Benson said in the news release.
Read: The obesity blame game
The findings could lead to new ways to combat obesity, the researchers said.
“It may be possible to train our brains to react differently to certain food cues,” Obesity Society spokesman Martin Binks said in the news release.
“This research is a step toward better understanding how food words – relatively minimal food cues – may influence food consumption and how other common experiences like stress may interact with associated food cues to influence eating behaviour. These types of studies may eventually lead to more effective behavioural strategies,” he said.
Studies presented at meetings are not subject to the same scrutiny given to published research and are generally considered preliminary.
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Image: Unhealthy foods from iStock
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