下面是小编为大家整理的TED演讲：为什么节食减肥没有效果,供大家参考。
ted演讲：为什么节食减肥没有效果(英语)
Three and a half years ago, I made one of the best decisions of my life. As my New Years resolution, I gave up dieting, stopped worrying about my weight, and learned to eat mindfully. Now I eat whenever Im hungry, and Ive lost 10 pounds.
This was me at age 13, when I started my first diet. I look at that picture now, and I think, you did not need a diet, you needed a fashion consult. (Laughter) But I thought I needed to lose weight, and when I gained it back, of course I blamed myself. And for the next three decades, I was on and off various diets. No matter what I tried, the weight Id lost always came back. Im sure many of you know the feeling.
As a neuroscientist, I wondered, why is this so hard? Obviously, how much you weigh depends on how much you eat and how much energy you burn. What most people dont realize is that hunger and energy use are controlled by the brain, mostly without your awareness. Your brain does a lot of its work behind the scenes, and that is a good thing, because your conscious mind -- how do we put this politely? -- its easily distracted. Its good that you dont have to remember to breathe when you get caught up in a movie. You dont forget how to walk because youre thinking about what to have for dinner.
Your brain also has its own sense of what you should weigh, no matter what you consciously believe. This is called your set point, but thats a misleading term, because its actually a range of about 10 or 15 pounds. You can use lifestyle choices to move your weight up and down within that range, but its much, much harder to stay outside of it. The hypothalamus, the part of the brain that regulates body weight, there are more than a dozen chemical signals in the brain that tell your body to gain weight, more than another dozen that tell your body to lose it, and the system works like a thermostat, responding to signals from th...
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