http://www.sina.com.cn 2009年05月15日 14:27   沪江英语

  I've never been a big fan of diet drinks (I prefer good old water), and now I'm glad.

    A study conducted by the University of Texas Health Science Center at San Antonio followed over six hundred people ranging from twenty-five to sixty-four years old for up to eight years and found that those drinking diet soda — even as little as one can or bottle a day — did not lose weight and were significantly more likely to become overweight than those who drank regular soft drinks or none at all. How can this be?

    No one knows for sure, but scientists think that artificial sweeteners, perhaps even the caramel coloring, may muddle brain chemistry. The brain in a sense gets a reward, and the desire for more sweets is intensified. The more of these fake sweet products you eat or drink, the more sweets you want.



  7、You Can Lose More in Cold Weather 冷天让你减更多

  Some people swear they gain more weight in the wintertime. Frankly, I think it's because we're not quite as active in winter. But the reality is, your metabolism revs up to keep your body warm in cold temperatures. This may mean marginally more calorie expenditure each day.

  8、Yo-Yo Dieting Won't Wreck Your Metabolism 急速减肥不会破坏新陈代谢

  Because of all the ups and downs I've experienced with my weight through the years, I was afraid that dieting might have messed with my metabolism. Now I've learned I don't have anything to worry about. While extremely low-cal diets temporarily lower your metabolism, recent studies suggest that the effects don't last.

    Researchers in Canada looked at fifty-two overweight women who'd been dieting on and off for an average of eighteen years. They measured the women's resting metabolic rate, then compared those numbers with what their metabolism was expected to be based on their weights, heights, and ages. The result: There was no difference between actual and predicted metabolic rates in all but four dieters. So even if you've lost and regained weight countless times, don't give up. Yo-yo diets don't hurt you; they just don't get you anywhere.


  9、There's No Need to Shun Red Meat on a Low-Fat Diet 不用为了节食戒红肉

  While it's true that prime and choice grades of meat are high in fat, lean cuts with fewer than 30 percent calories as fat are available. When buying meat, it's best to look for "select" grades of lean cuts like top round and tenderloin as well as extra-lean ground beef. They are among the lowest in fat.

  10、Diets Do Work 节食是有用的

  The phrase diets don't work has been drummed into us by book titles, advertising slogans, and other such mantras. But the truth is, you can lose weight following pretty much every diet on the bookstore shelf. The problem is that unless the diet fits your lifestyle, it's bound to fail, and your weight will creep back on. You want a diet you can live with.

    If you like sandwiches for lunch, for example, you'll have trouble sticking to a low-carb diet. If you hate counting calories and find it much easier to follow rules — like avoiding carbs — Atkins may be for you. And if you really love your olive oil, the Mediterranean diet is more appealing than a true low-fat diet. If you're trying to lose weight, you have to exercise your options.



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