Geek研究: 肥胖是因為過度飲食造成的,這一觀點對嗎?(1)
來源:滬江聽寫酷
2011-10-12 21:00
I keep reading about how the obesity epidemic is happening because people eat way more than they used to. That seems to make sense, but is it right?
Well, it's certainly true that food is more available than it used to be, at least in the United States. It's also the case that Americans eat out more than they used to, and that restaurant portion sizes have gotten bigger.
But it's complicated. There's certainly evidence that people eat more today than they did several decades ago. One study claims that we eat nearly 600 more calories per day than people did in the mid 1970s.
At least one other study, though, claims that Americans actually don't eat substantially more now than we used to. Even though restaurant portion sizes are bigger, it's possible that people are compensating by eating less in
other ways.
我一直在閱讀一些有關(guān)人們因食用比以前過多食物而導(dǎo)致肥胖的有關(guān)報告。這看似有理,但是真的正確嗎?
食物比以前更容易獲得是非??隙ǖ?,至少在美國是這樣。這也是美國人比以前吃的多的原因,并使得飯店的面積越來越大。
但是這是復(fù)雜的事情。有明確的證據(jù)表明人們現(xiàn)在比幾十年前吃更多的食物。一項研究稱我們每天食用食物比二十世紀(jì)七十年代幾乎多600卡路里。
至少有一項研究稱美國人實際上所食用的食物并不比以前多。即使飯店的面積越來越大,但是人們可能通過其他途徑所食用的食物較少。
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