They further point out that weight loss on fad diets, which typically restrict or prohibit certain foods, is often because the dieter has fewer food choices available.

他们进一步指出，能减肥的流行饮食法一般都要限制或禁食某些食物，这往往因为减肥者可选择的食物较少。

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Avoid fad diets. It's never a good idea to trade meals for shakes or to give up a food group in the hope that you'll lose weight — we all need a variety of foods to stay healthy.

避免时尚减肥药品：用药品代替食品或者节食的减肥方法是错误的，饮食均衡才能保持健康。

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It's too early to tell whether Facebook-like features in the workplace will be a passing fad or a lasting trend, but IBM says it's eating its own dog food.

类似Facebook的社交网络功能在职场中究竟会成为一种经久不衰的潮流，抑或只是昙花一现？ 现在下定论还为时过早。

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And it has just got longer, with the addition of omega-3 fatty acids, found in fish, which have made the transition from health-food fad to vital nutrient with amazing speed.

ECONOMIST: In praise of omega-3s

The stock's climb "symbolizes the broader market's and institutional investors' appreciation" of organic food as more than a fad, Ms. Ashby said in her office last week after Solera and Annie's employees, along with their children, rang the opening bell at the New York Stock Exchange.

WSJ: The Buyout Brain Behind Annie's IPO