How to spot a fad diet - Mia Nacamulli

993,996 views ・ 2016-04-11

TED-Ed


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翻译人员: Rong Ma 校对人员: fuyu you
00:06
Conventional wisdom about diets,
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对于健康食谱的普遍看法,
00:08
including government health recommendations,
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以及政府发布的健康饮食指南,
00:11
seems to change all the time.
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似乎随时都在变化。
00:13
And yet, ads routinely come about
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但是,广告总是在表明
00:15
claiming to have the answer about what we should eat.
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他们有解决我们该吃什么的答案。
00:19
So how do we distinguish what's actually healthy
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所以,我们该如何区分,什么是真正健康的
00:22
from what advertisers just want us to believe is good for us?
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什么是广告商想让我们相信它是健康的?
00:26
Marketing takes advantage of the desire to drop weight fast,
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市场抓住了人们期望, 快速减肥
00:30
and be stronger,
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变得更强壮,
00:31
slimmer,
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更苗条,
00:32
and brighter.
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以及更聪明。
整体而言,减肥计划给人以巨大变化的期望,
00:34
And in the big picture, diet plans promising dramatic results,
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00:37
known as fad diets,
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也就是通常所说的流行餐,
00:39
are just what they seem: too good to be true.
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就像他们看起来一样:好到难以置信
00:43
So where do diet fads even come from?
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所以,流行餐到底从哪里来的呢?
00:46
While the Ancient Greeks and Romans
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在几个世纪前,古希腊人和罗马人
00:47
rallied behind large-scale health regimens centuries earlier,
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整合了庞大数量的养生之道,
这个现象最早出现在维多利亚时期
00:52
this phenomenon began in earnest in the Victorian Era
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00:56
with crazes like the vinegar diet
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并伴随着时尚,比如喝醋减肥法
节食减肥法。
00:59
and the Banting Diet.
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01:00
Since then, diets have advised us all sorts of things:
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从那以后,减肥被宣传成各种各种的事:
01:04
to excessively chew,
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充分的咀嚼
一下都不嚼
01:06
to not chew at all,
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01:07
to swallow a grapefruit per meal,
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每餐吞一个葡萄柚,
01:10
non-stop cabbage soup,
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必不可少的卷心菜汤,
甚至服砷,
01:12
even consumption of arsenic,
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01:14
or tapeworms.
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吃绦虫。
01:16
If the idea of diet crazes has withstood history,
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如果流行餐的办法经受住了历史考验,
01:19
could this mean that they work?
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那就意味着他们是有效的嘛?
在短时间内,他们常常有效。
01:22
In the short term, the answer is often yes.
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01:24
Low-carbohydrate plans,
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低碳水化合物饮食计划,
01:26
like the popular Atkins or South Beach Diets,
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就像流行的阿特金斯减肥法以及南滩减肥法,
原本就有利尿的作用。
01:29
have an initial diuretic effect.
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钠被流失,直到身体能够平衡他们,
01:32
Sodium is lost until the body can balance itself out,
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01:35
and temporary fluid weight loss may occur.
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并且会发生短暂的身体流体质量减轻。
关于其他的高蛋白餐,你可能在一开始减重
01:39
With other high-protein diets, you might lose weight at first
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01:42
since by restricting your food choices,
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因为它限制了你的食物选择,
01:44
you are dropping your overall calorie intake.
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减少了总体卡路里的摄入。
01:47
But your body then lowers its metabolic rate to adjust to the shift,
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但是你的身体之后会降低新陈代谢速率来适应调整,
01:53
lessening the diet's effect over time
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减肥的效果便逐渐减少
01:55
and resulting in a quick reversal if the diet is abandoned.
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并且如果放弃这种饮食,体重就会快速反弹。
01:59
So while these diets may be alluring early on,
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所以,这些饮食计划可能一开始吸引着你,
02:02
they don't guarantee long-term benefits for your health and weight.
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他们并不能保证对你长期的健康以及体重有好处。
02:06
A few simple guidelines, though, can help differentiate between
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有一些简单的指导,能帮助你来区分
02:09
a diet that is beneficial in maintaining long-term health,
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这个饮食计划是对维持长期健康有好处的,
02:13
and one that only offers temporary weight changes.
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还是仅仅在短期内,体重上有所变化。
02:17
Here's the first tipoff:
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这是第一个警告:
02:18
If a diet focuses on intensely cutting back calories
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如果一个饮食计划集中关注减少卡路里
02:22
or on cutting out entire food groups,
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或者减少整个食物群
02:24
like fat, sugar, or carbohydrates,
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像是脂肪,糖类或者碳水化合物,
他们就有可能是流行餐。
02:27
chances are it's a fad diet.
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02:29
And another red flag is ritual,
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另一个危险信号是有模式的,
02:32
when the diet in question instructs you to only eat specific foods,
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那就是当这个饮食计划告诉你只吃特定的食物,
02:36
prescribed combinations,
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规定的组合,
02:38
or to opt for particular food substitutes,
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或者去选择指定的食品替代物,
02:41
like drinks, bars, or powders.
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像是饮料,棒状食物,或者粉末状的食物。
事实就是长期减肥
02:45
The truth is shedding pounds in the long run
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02:47
simply doesn't have a quick-fix solution.
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没有一个简单的速效对策。
02:51
Not all diet crazes tout weight loss.
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不是所有流行餐都以减少体重为卖点。
02:54
What about claims of superfoods, cleanses, and other body-boosting solutions?
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那么关于保健食品,清洁食品和其他强化身体办法的意见呢?
03:00
Marketing emphasizes the allure
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市场强调了产品
03:01
of products associated with ancient and remote cultures
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关于古代和久远文化的魅力
03:05
to create a sense of mysticism for consumers.
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从而对消费者造成迷惑感。
03:08
While so-called superfoods, like blueberries or açaí,
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被叫做绿色超级食物的东西,比如蓝莓,巴西莓,
03:12
do add a powerful punch of nutrients,
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确实加入了强力的营养物,
03:14
their super transformative qualities are largely exaggeration.
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他们的超级塑形能力被极大地夸大。
03:19
They are healthy additions to a balanced diet,
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对于平衡膳食,他们是健康的添加剂,
03:22
yet often, they're marketed as part of sugary drinks or cereals,
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但是经常被市场用作甜味饮料和谷物的成分
03:26
in which case the negative properties outweight the benefits.
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在那种情况下,他们的坏处大于好处。
03:30
Cleanses, too, may be great in moderation
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清洁食品,同样也是,可能对节制有很大帮助
03:33
since they can assist with jumpstarting weight loss
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因为他们可以帮助开始减少体重
03:35
and can increase the number of fresh fruits and vegetables consumed daily.
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并且可以增加每天新鲜水果和蔬菜的摄入。
但是,从科学角度,
03:40
Scientifically speaking, though,
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03:41
they've not yet been shown to have either a long-term benefit
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他们还没有被发现有长期的好处
03:45
or to detox the body any better than the natural mechanisms already in place.
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或者比通过自然机制排毒更有效。
无论在哪里,
03:51
Everywhere we look,
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03:52
we're offered solutions to how we can look better,
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都有解决让我们怎样看起来更好
03:55
feel fitter,
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感觉更健康,
03:56
and generally get ahead.
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并且总体上在进步的方法。
03:58
Food is no exception,
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食物没有例外,
但是建议我们吃什么最好,
04:00
but advice on what we should eat is best left to the doctors and nutritionists
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应该留给了解我们个人情况的医生或者是营养师。
04:04
who are aware of our individual circumstances.
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04:07
Diets and food fads aren't inherently wrong.
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饮食计划以及流行餐本质上没有错。
04:11
Circumstantially, they might even be right,
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有些时候,他们甚至是对的,
04:14
just not for everyone all of the time.
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但并不总适用于每个人。
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