Friday, July 27, 2012
Efforts to cut risky sexual behavior by U.S. teens stall
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Friday, July 13, 2012
Subtle goal reminders, known as primes, can offset hedonic effects of food and facilitate health behavior
Affecting the choices of these individuals is especially relevant since their eating behavior is heavily influenced by attractive food temptations which abound in our daily lives. The current living environment in most Western societies makes weight control a difficult enterprise for health-conscious individuals. Numerous studies have now revealed that conscious intentions for healthy eating and dieting are not sufficient for healthy eating pattern -- rather, consumers are heavily influenced by their eating habits, and by food temptations in their environment. Furthermore, people struggling with their weight are especially susceptible to the effects of such easily available food temptations. Chronic dieters and overweight people show strong hedonic responses to tasty, high-calorie food cues in both behavioral and neuro-imaging studies, and easily overeat when they are around attractive food. Thus, it is especially important to bolster these individuals against these detrimental effects of our "obesity promoting environment."
Previous research by Papies and colleagues has shown that priming methods can help dieters eat fewer high-calorie tasty snacks. In a field experiment, customers of a local butcher store were observed on days when a poster announcing a dieting recipe had been mounted on the door, and on other days when the poster was not present. When the diet recipe reminded dieters of their health goal, they ate less of the bite-size meat snacks the store offered than on other days. Customers who were not concerned with controlling their weight were not affected. Thus, goal priming is an effective strategy to help weight-concerned individuals translate their intentions into behavior, especially when faced with temptation .
More recent experiments have replicated this finding in different settings. A study now under review shows that subtle goal primes incorporated into the menu of a restaurant lead overweight and weight-concerned individuals to order more healthy meals, such as salads.
Most recently, this priming method was applied in a field experiment in a grocery store. Here, overweight and diet-concerned individuals who were handed a recipe flyer with health-related words before shopping bought less unhealthy snacks, such as chips, cookies, and cake. Interestingly, this was hardly affected by how much attention participants said they had paid to the recipes. It seems very little conscious awareness is needed for such primes to affect health behavior. Although preliminary, these findings are especially promising: food decisions made in the grocery store affect eating behavior at home, and that means the whole family could benefit.
This technique has great potential as an intervention to help weight control -- it is unobtrusive, easy to implement and low in cost making it attractive to policy makers.
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Tuesday, May 29, 2012
Gut Flora Can Alter Eating Behavior
The idea that the type of bacteria you have in your digestive tract can actually determine your eating behavior is something to pause for a moment and think about. I am saying that completely foreign bacteria can direct your subconscious brain how to behave in relation to food intake, a statement that is consistent with the latest study on the subject.
Researchers from the French Institute for Agricultural Research transferred the intestinal bacteria of obesity prone or obesity resistant rats into the intestinal tracts of germ free mice recipients, therefore having no innate gut microbiota. Some animals were fed a regular diet, whereas others were provided unlimited access to a high fat diet. Food intake and weight gain were monitored for eight weeks, and intestinal samples were analyzed for a variety of physiologic markers of metabolism and normal feedback mechanisms known to play a role in maintenance of energy balance.
Mice that received intestinal bacteria from obesity prone animals ate more food, gained more weight, and became more obese than those that received microbiota from obesity resistant animals. Animals with microbiota transferred from obesity prone animals also exhibited changes in intestinal nutrient sensors and gut peptide levels, likely influencing how the animals responded to eating.
Behavioral impulses in response to food signaling are of fundamental importance to the survival of the human race. If your gut flora is imbalanced, they can generate signals within your gut that cause peptides to form that communicate to your brain and dictate your eating behavior.
If you struggle with food cravings and have digestive tract symptoms, then working on improving your overall gut health and specifically working on improving your friendly flora may really help you out.
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Pulling Data...
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Wednesday, May 23, 2012
Chemical exposure influences rat behavior for generations
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Friday, May 4, 2012
Clues to 'Slacker' Behavior Found in Brain, Study Says
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