People with heart failure tend to gain weight because fluids build up when the heart can't pump enough blood.

VOA: standard.2010.06.04

Now in this particular case, these animals will not overeat on the healthy balanced food and won't gain excess weight, they'll maintain a normal weight.

在这种情况下,它们并不会吃过量的健康食品,因此不会变胖,所以一直保持着标准的体重

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

You eat, and eat, and eat and those people don't gain weight.

那些人大吃特吃 却不发胖

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

We need to reengineer the environment so it doesn't promote weight gain.

FORBES: The Next Fat Pill

She didn't gain any weight but recalled discomfort and stomach aches from several meals.

CNN: She ate 162 school lunches -- and blogged it

And he doesn't gain any weight.

WSJ: Chris Sale: Baseball's Greatest Metabolism