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2013年(13)

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分类: 敏捷开发

2013-05-13 10:30:40

Calorie Foods in Their Carts

By Steven ReinbergMONDAY, May 6 (HealthDay News) People who grocery shop when hungry tend to load up their carts with highercalorie foods and more of them , a new study suggests.

Not only does that affect the meal they will be eating at home that night , but their meals throughout the week, according to researchers Brian Wansink and Aner Tal cheap toms shoes, with the Food and Brand Lab at Cornell University.

known that hungry people buy more food in the grocery store, but what happens more is that people shift their shopping patterns to contain more highcalorie foods, Tal said. you are hungry, you think highcalorie food can provide you with more energy. by skipping meals might not be a good idea, Tal added. If you shop while hungry you might wind up compensating for it with the highcalorie foods that will make up meals for the next several days, he said.

Candy, salty snacks and red meat were deemed highercalorie foods in the study. Meanwhile, fruits, vegetables and chicken breasts counted as lowercalorie choices.

Tal is now investigating whether having a snack before food shopping will tip the scale toward choosing lowercalorie foods.

The report was published as a research letter in the May 6 online edition of JAMA Internal Medicine.

Another expert explained what might be driving the urge to shop for calorierich foods.

body does not know the difference between purposely depriving yourself of food, as in fasting or dieting, or a lack of food or a famine, said Samantha Heller , a senior clinical nutritionist at the NYU Langone Medical Center, in New York City. body does not know there are grocery stores and that you can have pizza delivered 24/7. The human body has not evolved as quickly as our agriculture or technology. It thinks we still have to go out and catch breakfast.

Therefore, she said, when the body is deprived of food it goes into survival mode because it does not know when there will be another meal.

complex defensive response affects both psychological and physiological parameters. When you do start choosing and eating foods , the body directs you to go for highcalorie foods to replace calories lost and to store up in case of another famine, Heller said .

To make their point , the researchers did two experiments. The first was a lab experiment in which people were told not to eat five hours before the study.

Before the test began, some of the 68 participants were given crackers to appease their hunger . Then , they all were asked to in a simulated, online grocery store. Hungry people tended to choose highercalorie foods such as regular ice cream over lowfat ice cream, the researchers found.

In a second study, the researchers followed 82 actual shoppers during the course of the day at times when they were most likely to be full or hungry.

Again , Wansink and Tal found that hungry shoppers bought more highcalorie products, compared to shoppers who weren hungry.

Nutritionist Heller said this very small study indicates that skipping meals , fasting and restrictive dieting, even for short periods of time, is likely to backfire if weight loss is the goal .

It is important to eat at relatively regular intervals, she added. signals the body that fuel is readily available . Metabolism can run at optimal levels. Energy is available for biological functions and daily activities, Heller explained. immune system has the wherewithal to keep the body healthy. Mood improves, she said

healthy foods, eating regularly, monitoring portions and getting in daily exercise is the best way for your body and mind get happier and healthier , Heller advised.Related:
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