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More restriction, more overeating: conflict monitoring ability is impaired by food-thought suppression among restrained eaters
Brain Imaging and Behavior ( IF 3.2 ) Pub Date : 2020-10-08 , DOI: 10.1007/s11682-020-00401-8
Xuemeng Zhang 1, 2 , Shaorui Wang 1, 2 , Yong Liu 1, 2 , Hong Chen 1, 2
Affiliation  

Numerous studies have shown that restrained eating is not an effective weight loss strategy. Restrained eaters often suppress their desires and thoughts about tasty food, which makes it more difficult to control themselves in subsequent eating behavior. The ego depletion impairs conflict monitoring abilities. Therefore, this study explored the effects of food thoughts suppression on restrained eaters’ conflict monitoring. Therefore, this study used functional magnetic resonance imaging (fMRI) methods to explore changes in the activity of brain regions involved in conflict monitoring when restrained eaters choose between high- and low-calorie foods after either suppressing or not suppressing thoughts about food. The results showed that, compared to the control condition, after suppression of such thoughts, restrained eaters chose more high-calorie foods and displayed decreased activity in the dorsal anterior cingulate cortex—an important region in charge of conflict monitoring. At the same time, the functional coupling of the dorsal anterior cingulate cortex and the precuneus increased. Our findings suggest that restrained eaters’ suppression of thoughts about tasty food could lead to a decline in their ability to monitor conflicts between current behaviors and goals, which in turn leads to unhealthy eating behavior.



中文翻译:

更多的限制,更多的暴饮暴食:克制饮食者的食物思想抑制削弱了冲突监测能力

大量研究表明,节制饮食并不是一种有效的减肥策略。节制的食客往往会压抑自己对美味食物的欲望和想法,这使得在随后的饮食行为中更难控制自己。自我耗竭削弱了冲突监控能力。因此,本研究探讨了食物思想抑制对克制进食者冲突监测的影响。因此,本研究使用功能性磁共振成像 (fMRI) 方法来探索当克制饮食者在抑制或不抑制对食物的想法后选择高热量和低热量食物时,参与冲突监测的大脑区域活动的变化。结果表明,与控制条件相比,在抑制这种想法后,节制的食客选择更多的高热量食物,并在背侧前扣带回皮层(负责冲突监测的重要区域)中表现出活动减少。同时,背侧前扣带回皮质和楔前叶的功能耦合增加。我们的研究结果表明,克制的食客抑制对美味食物的想法可能会导致他们监控当前行为和目标之间冲突的能力下降,进而导致不健康的饮食行为。

更新日期:2020-10-11
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