(完整版)TED英语演讲稿：为什么节食减肥没效果？_1
TED英语演讲稿：为什么节食减肥没效果？简介：在美国，80%的女孩在她们10岁的时候便开始节食。
神经学家sandra aamodt结合自己的亲身经历，讲述大脑是如何控制我们的身体的。
节食减肥为何没效果?来听听她的说法吧!three and a half years ago, i made one of the best decisions of my life. as my new year's resolution, i gave up dieting, stopped worrying about my weight, and learned to eat mindfully. now i eat whenever i'm hungry, and i've 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 i'd lost always came back. i'm 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 don'trealize 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? -- it's easily distracted. it's good that you don't have to remember to breathe when you get caught up in a movie. you don't forget how to walk because you're 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 that's a misleading term, because it's 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 it's 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 the body by adjusting hunger, activity and metabolism, to keep your weight stable as conditions change. that's what athermostat does, right? it keeps the temperature in your house the same as the weather changes outside. now you can try to change the temperature in your house by opening a window in the winter, but that's not going to change the setting on the thermostat, which will respond by kicking on the furnace to warm the place back up.your brain works exactly the same way, responding to weight loss by using powerful tools to push your body back to what it considers normal. if you lose a lot of weight, your brain reacts as if you were starving, and whether you started out fat or thin, your brain's response is exactly the same. we would love to think that your brain could tell whether you need to lose weight or not, but it can't. if you do lose a lot of weight, you become hungry, and your muscles burn less energy. dr. rudy leibel of columbia university has found that people who have lost 10 percent of their body weight burn 250 to 400 calories less because their metabolism is suppressed. that's a lot of food. this means that a successful dieter must eat this much less forever than someone of the same weight who has alwaysbeen thin.from an evolutionary perspective, your body's resistance to weight loss makes sense. when food was scarce, our ancestors' survival depended on conserving energy, and regaining the weight when food was available would have protected them against the next shortage. over the course of human history, starvation has been a much bigger problem than overeating. this may explain a very sad fact: set points can go up, but they rarely go down. now, if your mother ever mentioned that life is not fair, this is the kind of thing she was talking about. (laughter) successful dieting doesn't lower your set point. even after you've kept the weight off for as long as seven years, your brain keeps trying to make you gain it back. if that weight loss had been due to a long famine, that would be a sensible response. in our modern world of drive-thru burgers, it's not working out so well for many of us. that difference between our ancestral past and our abundant present is the reason that dr. yoni freedhoff of the university of ottawa would like to take some of his patients back to a time when food was less available,and it's also the reason that changing the food environment is really going to be the most effective solution to obesity.sadly, a temporary weight gain can become permanent. if you stay at a high weight for too long, probably a matter of years for most of us, your brain may decide that that's the new normal.psychologists classify eaters into two groups, those who rely on their hunger and those who try to control their eating through willpower, like most dieters. let's call them intuitive eaters and controlled eaters. the interesting thing is that intuitive eaters are less likely to be overweight, and they spend less time thinking about food. controlled eaters are more vulnerable to overeating in response to advertising, super-sizing, and the all-you-can-eat buffet. and a small indulgence, like eating one scoop of ice cream, is more likely to lead to a food binge in controlled eaters. children are especially vulnerable to this cycle of dieting and then binging.several long-term studies have shown that girls who diet in their early teenage years are three times morelikely to become overweight five years later, even if they started at a normal weight, and all of these studies found that the same factors that predicted weight gain also predicted the development of eating disorders. the other factor, by the way, those of you who are parents, was being teased by family members about their weight. so don't do that. (laughter)i left almost all my graphs at home, but i couldn't resist throwing in just this one, because i'm a geek, and that's how i roll. (laughter) this is a study that looked at the risk of death over a 14-year period based on four healthy habits: eating enough fruits and vegetables, exercise three times a week, not smoking, and drinking in moderation. let's start by looking at the normal weight people in the study. the height of the bars is the risk of death, and those zero, one, two, three, four numbers on the horizontal axis are the number of those healthy habits that a given person had. and as you'd expect, the healthier the lifestyle, the less likely people were to die during the study. now let's look at what happens in overweight people.the ones that had no healthy habits had a higherrisk of death. adding just one healthy habit pulls overweight people back into the normal range. for obese people with no healthy habits, the risk is very high, seven times higher than the healthiest groups in the study. but a healthy lifestyle helps obese people too. in fact, if you look only at the group with all four healthy habits, you can see that weight makes very little difference. you can take control of your health by taking control of your lifestyle, even if you can't lose weight and keep it off.diets don't have very much reliability. five years after a diet, most people have regained the weight. forty percent of them have gained even more. if you think about this, the typical outcome of dieting is that you're more likely to gain weight in the long run than to lose it.if i've convinced you that dieting might be a problem, the next question is, what do you do about it? and my answer, in a word, is mindfulness. i'm not saying you need to learn to meditate or take up yoga. i'm talking about mindful eating: learning to understand your body's signals so that you eat when you're hungryand stop when you're full, because a lot of weight gain boils down to eating when you're not hungry. how do you do it? give yourself permission to eat as much as you want, and then work on figuring out what makes your body feel good. sit down to regular meals without distractions. think about how your body feels when you start to eat and when you stop, and let your hunger decide when you should be done. it took about a year for me to learn this, but it's really been worth it.i am so much more relaxed around food than i have ever been in my life. i often don't think about it. i forget we have chocolate in the house. it's like aliens have taken over my brain. it's just completely different.i should say that this approach to eating probably won't make you lose weight unless you often eat when you're not hungry, but doctors don't know of any approach that makes significant weight loss in a lot of people, and that is why a lot of people are now focusing on preventing weight gain instead of promoting weight loss. let's face it: if diets worked, we'd all be thin already. (laughter)why do we keep doing the same thing and expectingdifferent results? diets may seem harmless, but they actually do a lot of collateral damage. at worst, they ruin lives: weight obsession leads to eating disorders, especially in young kids. in the , we have 80 percent of 10-year-old girls say they've been on a diet. our daughters have learned to measure their worth by the wrong scale. even at its best, dieting is a waste of time and energy. it takes willpower which you could be using to help your kids with their homework or to finish that important work project, and because willpower is limited, any strategy that relies on its consistent application is pretty much guaranteed to eventually fail you when your attention moves on to something else.let me leave you with one last thought. what if we told all those dieting girls that it's okay to eat when they're hungry? what if we taught them to work with their appetite instead of fearing it? i think most of them would be happier and healthier, and as adults, many of them would probably be thinner. i wish someone had told me that back when i was 13.thanks.(applause)。
2021年TED英语演讲：减肥怎么就你坚持不下去
为何有些人在减肥这件事上比别人更苦恼社会心理学家Emily为我们展示了她的研究，揭示了众多原因之一视觉。
在这个启发性的演讲中，她展示了在健身这件事上，为何有些人眼中的世界就是和别人不一样也提供了一个格外简单的办法来克服这些难题。
下面是为大家收集关于TED英语演讲减肥怎么就你坚持不下去，欢迎借鉴参考。
演说者Emily Balcetis演说题目减肥，怎么就你坚持不下去中英对照演讲稿Vision is the most important and prioritized sense that we have. We are constantly looking at the world around us, and quickly we identify and make sense of what it is that we see.视觉是我们所有感觉中最重要和最优先的。
我们在不停地注视着周围的一切，并且快速的识别和分析我们所看到的事物。
Lets just start with an example of that very fact. Im going to show you a photograph of a person, just for a second or two, and Id like for you to identify what emotion is on his face. Ready Here you go. Go with your gut reaction. Okay. What did you see让我先举一个例子来说明这个事实。
我会让你们花几秒钟时间来观看一个人的照片，并且请你们辨别出这个人的表情所代表的情绪。
准备好了吗就是这张，跟随你们的第一感觉，好了，你们看到了什么事实上我们调查了一百二十多个人，而调查结果很复杂。
人们在所看到的情绪上面并没有达成共识。
Well, we actually surveyed over 120 individuals, and the results were mixed. People did not agree on what emotion they saw on his face. Maybe you saw discomfort. That was the most frequent response that we received.可能你看到了不安，这是我们收到的最常见的回答。
TED演讲：为什么节食减肥没有效果（2）
TED演讲：为什么节食减肥没有效果(2)Psychologists classify eaters into two groups, those who rely on their hunger and those who try to control their eating through willpower, like most dieters. Let's call them intuitive eaters and controlled eaters. The interesting thing is that intuitive eaters are less likely to be overweight, and they spend less time thinking about food. Controlled eaters are more vulnerable to overeating in response to advertising, super-sizing, and the all-you-can-eat buffet. And a small indulgence, like eating one scoop of ice cream, is more likely to lead to a food binge in controlled eaters. Children are especially vulnerable to this cycle of dieting and then binging.Several long-term studies have shown that girls who diet in their early teenage years are three times more likely to become overweight five years later, even if they started at a normal weight, and all of these studies found that the same factors that predicted weight gain also predicted the development of eating disorders. The other factor, by the way, those of you who are parents, was being teased by family members about their weight. So don't do that. (Laughter)I left almost all my graphs at home, but I couldn't resist throwing in just this one, because I'm a geek, and that's how I roll. (Laughter) This is a study that looked at the risk of death over a 14-year period based on four healthy habits: eating enough fruits and vegetables, exercise three times a week, not smoking, and drinking in moderation. Let's start by looking at the normal weight people in the study. The height of the bars is the risk of death, and those zero, one, two, three, four numbers on the horizontal axis are the number of those healthy habits that agiven person had. And as you'd expect, the healthier the lifestyle, the less likely people were to die during the study. Now let's look at what happens in overweight people.The ones that had no healthy habits had a higher risk of death. Adding just one healthy habit pulls overweight people back into the normal range. For obese people with no healthy habits, the risk is very high, seven times higher than the healthiest groups in the study. But a healthy lifestyle helps obese people too. In fact, if you look only at the group with all four healthy habits, you can see that weight makes very little difference. You can take control of your health by taking control of your lifestyle, even If you can't lose weight and keep it off.Diets don't have very much reliability. Five years after a diet, most people have regained the weight. Forty percent of them have gained even more. If you think about this, the typical outcome of dieting is that you're more likely to gain weight in the long run than to lose it.If I've convinced you that dieting might be a problem, the next question is, what do you do about it? And my answer, in a word, is mindfulness. I'm not saying you need to learn to meditate or take up yoga. I'm talking about mindful eating: learning to understand your body's signals so that you eat when you're hungry and stop when you're full, because a lot of weight gain boils down to eating when you're not hungry. How do you do it? Give yourself permission to eat as much as you want, and then work on figuring out what makes your body feel good. Sit down to regular meals without distractions. Think about how your body feels when you start to eat and when you stop, and let your hunger decide when you should be done. It took about a year for me to learn this, but it's really been worth it. I am somuch more relaxed around food than I have ever been in my life.I often don't think about it. I forget we have chocolate in the house. It's like aliens have taken over my brain. It's just completely different. I should say that this approach to eating probably won't make you lose weight unless you often eat when you're not hungry, but doctors don't know of any approach that makes significant weight loss in a lot of people, and that is why a lot of people are now focusing on preventing weight gain instead of promoting weight loss. Let's face it: If diets worked, we'd all be thin already. (Laughter)Why do we keep doing the same thing and expecting different results? Diets may seem harmless, but they actually do a lot of collateral damage. At worst, they ruin lives: Weight obsession leads to eating disorders, especially in young kids. In the U.S., we have 80 percent of 10-year-old girls say they've been on a diet. Our daughters have learned to measure their worth by the wrong scale. Even at its best, dieting is a waste of time and energy. It takes willpower which you could be using to help your kids with their homework or to finish that important work project, and because willpower is limited, any strategy that relies on its consistent application is pretty much guaranteed to eventually fail you when your attention moves on to something else.Let me leave you with one last thought. What if we told all those dieting girls that it's okay to eat when they're hungry? What if we taught them to work with their appetite instead of fearing it? I think most of them would be happier and healthier, and as adults, many of them would probably be thinner. I wish someone had told me that back when I was 13.Thanks.(Applause)。
英文演讲稿-如何减肥
---------------------------------------------------------------范文最新推荐------------------------------------------------------英文演讲稿:如何减肥how to lose weightit seems that many people today are overweight. no one wants to carry around extra pounds, lout few people know how to slum down effectively. they look for miracle pills and magic cures. in the end, they fail and the pounds come back. but the most effective way of losing weight is actually very simple. it is a combination of a good diet and proper exercise. what makes it work is determination. it requires discipline and commitment to succeed. here is an example that proves the truth of these words.my aunt had been trying to lose weight for years. she went on one diet after another, but none of them worked. she lost a lot of weight quickly only to have it come back. finally, she followed her doctor’s advice and began to eat a simple, well-balanced diet. she ate lots of fruits and vegetables and avoided high-fat foods. in addition, she joined an exercise class. she worked out three times a week. at first, my aunt wasn’t happy because the weight came o ff so slowly. but her classmates encouraged her to stick to it and eventually she1 / 10reached her goal. best of all, she was able to stay at her ideal weight. that was because she had developed healthy new habits. 如何减肥现在似乎有许多人的体重都过重。
关于建议不要节食减肥的英语作文模板八下
关于建议不要节食减肥的英语作文模板八下Title: Why You Should Avoid Dieting to Lose WeightIntroduction:Many people resort to dieting as a quick fix to lose weight, but this practice is not only ineffective in the long run but can also have negative effects on your health. In this article, we will explore the reasons why you should avoid dieting to lose weight and suggest healthier alternatives for achieving your weight loss goals.Body:1. Dieting is not sustainable- Many diets are based on restrictive eating habits that are difficult to maintain in the long term. Once you stop following the diet, you are likely to gain back the weight you lost and even more.- Instead of focusing on short-term dieting, it is important to develop a healthy and balanced eating plan that you can stick to for life.2. Dieting can lead to nutrient deficiencies- Some diets require cutting out entire food groups, leading to nutrient deficiencies that can have serious consequences for your health.- Instead of depriving yourself of essential nutrients, it is better to focus on eating a variety of foods that provide the nutrients your body needs to function properly.3. Dieting can harm your metabolism- Constantly going on and off diets can disrupt your metabolism and make it harder for you to lose weight in the future.- Instead of relying on dieting to lose weight, focus on building healthy habits like regular exercise and mindful eating that support a healthy metabolism.4. Dieting can have negative psychological effects- The constant cycle of dieting and weight loss can have a negative impact on your mental health, leading to feelings of guilt, shame, and low self-esteem.- Instead of tying your self-worth to your weight, focus on building a positive relationship with food and your body through self-acceptance and self-care.Conclusion:In conclusion, dieting is not the answer to achieving lasting weight loss. Instead of resorting to extreme measures that can harm your health and well-being, focus on making sustainable lifestyle changes that promote a healthy body and mind. Remember, weight loss is a journey, not a destination, and it is important to prioritize your overall health and well-being above the number on the scale.。
TED英语演讲：减肥怎么就你坚持不下去
TED英语演讲：减肥怎么就你坚持不下去为何有些人在减肥这件事上比别人更苦恼?社会心理学家Emily为我们展示了她的研究，揭示了众多原因之一：视觉。
在这个启发性的演讲中，她展示了在健身这件事上，为何有些人眼中的世界就是和别人不一样也提供了一个格外简单的办法来克服这些难题。
下面是本文库为大家收集关于TED英语演讲：减肥怎么就你坚持不下去，欢迎借鉴参考。
演说者：Emily Balcetis演说题目：减肥，怎么就你坚持不下去?中英对照演讲稿Vision is the most important and prioritized sense that we have. We are constantly looking at the world around us, and quickly we identify and make sense of what it is that we see.视觉是我们所有感觉中最重要和最优先的。
我们在不停地注视着周围的一切，并且快速的识别和分析我们所看到的事物。
Lets just start with an example of that very fact. Im going to show you a photograph of a person, just for a second or two, and Id like for you to identify what emotion is on his face. Ready? Here you go. Go with your gut reaction. Okay. What did you see?让我先举一个例子来说明这个事实。
我会让你们花几秒钟时间来观看一个人的照片，并且请你们辨别出这个人的表情所代表的情绪。
准备好了吗?就是这张，跟随你们的第一感觉，好了，你们看到了什么?事实上我们调查了一百二十多个人，而调查结果很复杂。
该不该节食减肥辩论观点英语作文
该不该节食减肥辩论观点英语作文The Debate on Dieting for Weight Loss.The topic of whether or not to diet for weight loss has sparked debate among individuals for decades. With theever-growing concern about obesity and its related health issues, the discussion has become even more intense. Inthis article, we will explore both sides of the argument, weighing the pros and cons of dieting for weight loss.The Pros of Dieting for Weight Loss.1. Health Improvement: Obesity is a significant risk factor for various chronic diseases such as heart disease, diabetes, and stroke. Losing weight through dieting can significantly reduce these risks, leading to a healthier lifestyle.2. Confidence Boost: Weight loss can lead to a significant improvement in body image and self-confidence.Feeling more comfortable in one's own skin can have a positive impact on mental health and overall well-being.3. Long-Term Benefits: Adopting healthy eating habits as part of a weight loss diet can have long-term benefits, including maintaining a healthy weight and preventing weight regain.4. Social Acceptance: In many cultures, a slimmer body is highly valued, and weight loss can lead to better social acceptance and fewer instances of discrimination.The Cons of Dieting for Weight Loss.1. Yo-Yo Effect: Many dieters experience weight regain after stopping their diet, leading to a cycle of weight loss and regain known as the "yo-yo effect". This constant fluctuation can be even more unhealthy than maintaining a constant overweight status.2. Nutritional Deficiencies: Strict diets can lead to nutritional deficiencies, especially if they restrictcertain food groups or nutrients. Long-term nutritional deficiencies can have serious health consequences.3. Psychological Impact: Dieting can have a negative impact on mental health, leading to feelings of guilt, failure, and obsession with food and body image. This can lead to eating disorders and other psychological problems.4. Short-Term Solutions: Dieting is often seen as a short-term solution to weight loss, rather than a sustainable lifestyle change. Once the diet is stopped, weight regain is often inevitable.The Balanced Approach.Instead of focusing solely on dieting for weight loss, a more balanced approach is recommended. This involves adopting healthy eating habits that are sustainable in the long term, rather than following a restrictive diet. It emphasizes the importance of:1. Portion Control: Eating smaller portions of healthyfood can help control calorie intake without feeling deprived.2. Variety: Including a variety of foods in the diet ensures that all essential nutrients are obtained.3. Regular Exercise: Incorporating regular physical activity into daily life can help boost metabolism and promote weight loss.4. Mindful Eating: Taking the time to enjoy meals and being aware of hunger and fullness cues can help prevent overeating.5. Long-Term Commitment: Viewing weight loss as a lifelong commitment to healthy eating and active living, rather than a temporary fix, is key to maintaining a healthy weight in the long run.In conclusion, while dieting can be an effective tool for weight loss, it should be approached with caution. A balanced diet combined with regular exercise and a healthylifestyle is the key to achieving long-term weight loss and improved health. Focusing on sustainable changes rather than quick fixes is essential for maintaining a healthy weight in the long run.。
节食减肥英语作文
节食减肥英语作文Title: The Pros and Cons of Dieting for Weight Loss。
In recent times, the practice of dieting has become increasingly popular as a means of shedding excess weight. While it offers potential benefits, there are also drawbacks associated with this approach. This essay aims to explore the various aspects of dieting for weight loss.To begin with, dieting can be an effective method for achieving weight loss goals. By controlling caloric intake and making healthier food choices, individuals can create a calorie deficit, leading to gradual weight reduction. Additionally, certain diets, such as the Mediterranean diet or the ketogenic diet, have been scientifically proven to promote weight loss and improve overall health when followed correctly.Moreover, adopting a dieting regimen often encourages individuals to become more mindful of their eating habits.This heightened awareness can lead to better food choices and a greater emphasis on nutrition, ultimatelycontributing to long-term health benefits beyond weight loss alone.However, it's important to acknowledge the potential downsides of dieting. One significant drawback is the risk of developing disordered eating patterns or even eating disorders such as anorexia nervosa or bulimia nervosa. Extreme restriction of food intake or the elimination of entire food groups can disrupt one's relationship with food and lead to unhealthy behaviors.Furthermore, many fad diets promote quick fixes and unrealistic expectations, promising rapid weight loss without addressing the underlying factors contributing to weight gain. Such approaches often result in short-term success followed by weight regain once normal eating patterns resume.Additionally, dieting can have negative effects on both physical and mental well-being. Severely restrictingcalories can lead to nutrient deficiencies, fatigue, and muscle loss. Moreover, the constant focus on foodrestriction and weight loss can lead to feelings of guilt, shame, and anxiety, detracting from overall quality of life.In conclusion, while dieting can be an effective toolfor weight loss, it's essential to approach it with caution and moderation. It's crucial to prioritize health over aesthetics and to adopt sustainable lifestyle changesrather than relying on short-term fixes. By combining healthy eating habits with regular physical activity and a positive mindset, individuals can achieve their weight loss goals while maintaining overall well-being.。
如何看待节食减肥英语作文80字
节食减肥：一种值得审视的减肥方式In the quest for a slimmer physique, dieting has become a popular approach among many. While it may appear to be a straightforward method, there are several aspects to consider before embarking on a diet. Firstly, diets that promise rapid weight loss are often unhealthy and unsustainable. Rapid weight loss can lead to dehydration, electrolyte imbalance, and even muscle loss, which can affect overall health negatively. Secondly, diets that restrict certain food groups or nutrients may lead to nutritional deficiencies in the long run. The body requires a balanced diet to function optimally, and depriving it of essential nutrients can have adverse effects.Moreover, diets that are too restrictive can cause psychological stress and affect one's quality of life. Feeling hungry or deprived can lead to feelings of frustration and dissatisfaction, which can affect one's mental well-being. Finally, it is important to rememberthat weight loss is not the only goal when it comes to dieting. A healthy lifestyle, including regular exercise,balanced eating, and stress management, is essential for maintaining a healthy weight and improving overall health.In conclusion, while dieting can be an effective way to lose weight, it is crucial to approach it with caution and wisdom. Opting for sustainable and balanced diets, rather than crash diets, is key to achieving long-term weight loss and maintaining good health.**如何看待节食减肥**在追求苗条身材的道路上，节食已成为许多人采取的方法。
如何看待节食减肥英语作文80字
如何看待节食减肥英语作文80字Dieting: A Critical Perspective.Dieting has become an increasingly prevalent practicein today's society, driven by the pervasive desire to achieve an idealized body shape. However, the pursuit of weight loss through restrictive eating patterns often comes at significant costs to both physical and mental well-being.Short-Term Ineffectiveness and Long-Term Health Consequences.Numerous studies have demonstrated that the majority of diets fail to produce sustainable weight loss. In fact, dieting can often lead to a phenomenon known as "yo-yo dieting," where individuals repeatedly lose and regain weight, ultimately contributing to weight gain. Moreover, restrictive eating patterns can deprive the body ofessential nutrients, leading to a host of health problems, including nutrient deficiencies, muscle loss, and metabolicdysfunction.Psychological Distress and Eating Disorders.Dieting is strongly associated with negative psychological consequences. The constant focus on food and weight can lead to body dissatisfaction, low self-esteem, and a preoccupation with eating. In severe cases, dieting can trigger eating disorders such as anorexia nervosa and bulimia nervosa, which can have devastating physical and mental repercussions.Social Isolation and Stigma.Dieting can also contribute to social isolation and stigma. Individuals who engage in restrictive eating patterns may feel ashamed of their bodies or theirinability to conform to societal beauty standards. This can lead to feelings of isolation and alienation, further exacerbating the psychological distress associated with dieting.Ignoring Underlying Causes of Overweight and Obesity.Dieting focuses solely on weight loss without addressing the underlying causes of overweight and obesity, such as genetics, hormonal imbalances, emotional eating, and sedentary lifestyles. By ignoring these factors, diets fail to provide a comprehensive solution to weight management and may even perpetuate the problem.Promoting an Unhealthy Relationship with Food.Dieting promotes an unhealthy relationship with food by creating a sense of guilt, shame, and fear surrounding certain foods. This can lead to disordered eating patterns, an inability to enjoy food, and a preoccupation with counting calories and controlling food intake.Conclusion.While the desire to lose weight may be understandable, dieting is not a sustainable or healthy approach. It is associated with numerous physical and mental health risks,promotes an unhealthy relationship with food, and fails to address the underlying causes of overweight and obesity. Instead, a focus on overall health, balanced nutrition, and regular physical activity is a more sustainable and effective path to well-being.。
TED英语演讲稿：为什么节食减肥没效果？_英语演讲稿_
TED英语演讲稿：为什么节食减肥没效果？简介：在美国，80%的女孩在她们10岁的时候便开始节食。
神经学家sandra aamodt结合自己的亲身经历，讲述大脑是如何控制我们的身体的。
节食减肥为何没效果?来听听她的说法吧!three and a half years ago, i made one of the best decisions of my life. as my new year's resolution, i gave up dieting, stopped worrying about my weight, and learned to eat mindfully. now i eat whenever i'm hungry, and i've 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 i'd lost always came back. i'm 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 don't 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? -- it's easily distracted. it's good that you don't have to remember to breathe when you get caught up in a movie. you don't forget how to walk because you're 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 that's a misleading term, because it's actually a range of about 10 or 15 pounds. you can use lifestyle choices to moveyour weight up and down within that range, but it's 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 the body by adjusting hunger, activity and metabolism, to keep your weight stable as conditions change. that's what a thermostat does, right? it keeps the temperature in your house the same as the weather changes outside. now you can try to change the temperature in your house by opening a window in the winter, but that's not going to change the setting on the thermostat, which will respond by kicking on the furnace to warm the place back up.your brain works exactly the same way, responding to weight loss by using powerful tools to push your body back to what it considers normal. if you lose a lot of weight, your brain reacts as if you were starving, and whether you started out fat or thin, your brain's response is exactly the same. we would love to think that your brain could tell whether you need to lose weight or not, but it can't. if you do lose a lot of weight, you become hungry, and your muscles burn less energy. dr. rudy leibel of columbia university has found that people who have lost 10 percent of their body weight burn 250 to 400 calories less because their metabolism is suppressed. that's a lot of food. this means that a successful dieter must eat this much less forever than someone of the same weight who has always been thin.from an evolutionary perspective, your body's resistance to weight loss makes sense. when food was scarce, our ancestors' survival depended on conserving energy, and regaining theweight when food was available would have protected them against the next shortage. over the course of human history, starvation has been a much bigger problem than overeating. this may explain a very sad fact: set points can go up, but they rarely go down. now, if your mother ever mentioned that life is not fair, this is the kind of thing she was talking about. (laughter) successful dieting doesn't lower your set point. even after you've kept the weight off for as long as seven years, your brain keeps trying to make you gain it back. if that weight loss had been due to a long famine, that would be a sensible response. in our modern world of drive-thru burgers, it's not working out so well for many of us. that difference between our ancestral past and our abundant present is the reason that dr. yoni freedhoff of the university of ottawa would like to take some of his patients back to a time when food was less available, and it's also the reason that changing the food environment is really going to be the most effective solution to obesity.sadly, a temporary weight gain can become permanent. if you stay at a high weight for too long, probably a matter of years for most of us, your brain may decide that that's the new normal.psychologists classify eaters into two groups, those who rely on their hunger and those who try to control their eating through willpower, like most dieters. let's call them intuitive eaters and controlled eaters. the interesting thing is that intuitive eaters are less likely to be overweight, and they spend less time thinking about food. controlled eaters are more vulnerable to overeating in response to advertising, super-sizing, and the all-you-can-eat buffet. and a small indulgence, like eating one scoop of ice cream, is more likely to lead to a food binge in controlled eaters. children are especially vulnerable to this cycle of dieting and then binging.several long-term studies have shown that girls who diet in their early teenage years are three times more likely to become overweight five years later, even if they started at a normal weight, and all of these studies found that the same factors that predicted weight gain also predicted the development of eating disorders. the other factor, by the way, those of you who are parents, was being teased by family members about their weight. so don't do that. (laughter)i left almost all my graphs at home, but i couldn't resist throwing in just this one, because i'm a geek, and that's how i roll. (laughter) this is a study that looked at the risk of death over a 14-year period based on four healthy habits: eating enough fruits and vegetables, exercise three times a week, not smoking, and drinking in moderation. let's start by looking at the normal weight people in the study. the height of the bars is the risk of death, and those zero, one, two, three, four numbers on the horizontal axis are the number of those healthy habits that a given person had. and as you'd expect, the healthier the lifestyle, the less likely people were to die during the study. now let's look at what happens in overweight people.the ones that had no healthy habits had a higher risk of death. adding just one healthy habit pulls overweight people back into the normal range. for obese people with no healthy habits, the risk is very high, seven times higher than the healthiest groups in the study. but a healthy lifestyle helps obese people too. in fact, if you look only at the group with all four healthy habits, you can see that weight makes very little difference. you can take control of your health by taking control of your lifestyle, even if you can't lose weight and keep it off.diets don't have very much reliability. five years after a diet,most people have regained the weight. forty percent of them have gained even more. if you think about this, the typical outcome of dieting is that you're more likely to gain weight in the long run than to lose it.if i've convinced you that dieting might be a problem, the next question is, what do you do about it? and my answer, in a word, is mindfulness. i'm not saying you need to learn to meditate or take up yoga. i'm talking about mindful eating: learning to understand your body's signals so that you eat when you're hungry and stop when you're full, because a lot of weight gain boils down to eating when you're not hungry. how do you do it? give yourself permission to eat as much as you want, and then work on figuring out what makes your body feel good. sit down to regular meals without distractions. think about how your body feels when you start to eat and when you stop, and let your hunger decide when you should be done. it took about a year for me to learn this, but it's really been worth it. i am so much more relaxed around food than i have ever been in my life. i often don't think about it. i forget we have chocolate in the house. it's like aliens have taken over my brain. it's just completely different. i should say that this approach to eating probably won't make you lose weight unless you often eat when you're not hungry, but doctors don't know of any approach that makes significant weight loss in a lot of people, and that is why a lot of people are now focusing on preventing weight gain instead of promoting weight loss. let's face it: if diets worked, we'd all be thin already. (laughter)why do we keep doing the same thing and expecting different results? diets may seem harmless, but they actually do a lot of collateral damage. at worst, they ruin lives: weightobsession leads to eating disorders, especially in young kids. in the u.s., we have 80 percent of 10-year-old girls say they've been on a diet. our daughters have learned to measure their worth by the wrong scale. even at its best, dieting is a waste of time and energy. it takes willpower which you could be using to help your kids with their homework or to finish that important work project, and because willpower is limited, any strategy that relies on its consistent application is pretty much guaranteed to eventually fail you when your attention moves on to something else.let me leave you with one last thought. what if we told all those dieting girls that it's okay to eat when they're hungry? what if we taught them to work with their appetite instead of fearing it? i think most of them would be happier and healthier, and as adults, many of them would probably be thinner. i wish someone had told me that back when i was 13.thanks.(applause)。