Gluttony is a hard-to-control eating habit.

暴食是一种难以控制的饮食习惯。

You have a terrible diet (a poor/bad/terrible eating habit) and I don't think you know anything about nutrition.

你的饮食习惯很差, 并且我认为你对营养学一无所知。

They point out that genetically modified food will threaten the health of people as well as arouse heated debate in consumers and experts so as to bring changes to people's eating habit.

他们指出转基因食品会威胁到人们的健康，并在消费者和专家中激起激烈的讨论以至于改变人们的饮食习惯。