Rather than studying weight loss in overweight or obese individuals, scientists looked at how certain activities and diet affected weight gain over several years.

过去几年中科学家研究了某些活动和饮食对体重增加的影响，没有研究超重或肥胖者减肥的个案。

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[font=Times New Roman]Fowler and Christakis say that the contagion-effect should hold just as much for weight loss as it does for weight gain.

[font=Times New Roman]Fowler和Christakis认为这种“传染效应”在减肥上也一样。

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Pressure from loved ones about weight loss was not helpful for women already concerned about it, and in fact led women who weren't originally concerned about their weight to gain weight, too.

而来自爱人的压力不仅不会对那些本就重视减肥的女性有所帮助，事实上，反而会让起初没有担忧体重的女性也增加体重。

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These include weight gain or loss, eye or stomach problems, sleepiness and loss of balance.

VOA: special.2010.10.26

So, some women can develop irregular cycles because of medical conditions such as thyroid abnormalities, but both weight loss and weight gain can play a role as can stress.

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As they age rapidly, these children suffer from a loss of body fat and hair and an inability to gain weight.

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In addition, people often overconsume no-sugar products because they assume that they must be healthier, and they end up taking in more calories than they need which leads to weight gain or prevents weight loss.

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