The final potential cause is an increase in snacking and eating out over recent decades both in terms of how often they happen and how much they contribute to our overall energy intake.

最终的潜在原因是近几十年来吃零食和外出就餐的次数增加，这不仅体现在其发生的频率上，还体现在其对我们整体能量摄入的影响。

youdao

Previous research has also shown a reduction in the average energy intake in the developed world.

先前的研究者也已经表明了发达国家的平均能量摄入量减少了。

youdao

56% of the women in the group with the highest energy intake at conception had sons, compared with 45% in the lowest group.

在最高的热量摄入组中56%的母亲都怀上男孩，而在最低的热量摄入组中只有45%。

youdao

Being in a warmer environment,up to a point, will lead to decreased energy expenditure and therefore, at the same amount of food intake,weight gain."

VOA: special.2010.12.21

And then the investigators actually measured these things, and found that with reported and actual energy intake, how many calories people were consuming, there was really quite a difference.

研究人员实际上得到了以下结果,实验对象汇报的和实际的能量摄入,也就是人们摄入的卡路里,两者有较大差异

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Researchers found that the beneficial associations weren't related to energy intake.

WSJ: Vegetarians Live Longer Than Meat-Eaters, Study Finds

Finally, there is some evidence suggesting artificial sweeteners, which are often used in conjunction with sugar alcohols, may actually contribute to obesity by promoting energy intake.

CNN: Is no-sugar ice cream really a healthier alternative?

According to a 2001 study led by researchers at the University of Washington, Seattle, adding dextrin to a beverage can increase levels of satiety and so reduce energy intake in subsequent meals by about 72 calories.

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