減肥失敗是因為建議錯誤

Diets fail because advice is wrong
減肥失敗是因為建議錯誤
Eat less and you will lose weight. This simple piece of advice is true, but it’s one that many of us struggle to follow. It is easy to blame a lack of willpower or a penchant for sugary, fat-laden snacks. But researchers say the reason so many of us relapse and fail on diets is because we have unrealistic expectations. And this is not our fault but that of experts, because the advice they give us is flawed.
少吃你就會瘦。這個簡單的建議沒錯，但我們許多人卻很難遵守。怪罪缺乏意志力或是愛吃甜又高熱量的零食或許很簡單，但研究人員說，我們這麼多人復胖而且減肥失敗的原因，是因為期望不切實際，而這也不是我們的錯，而是專家的錯，因為他們給的建議其實有錯。
Most people start dieting with the notion that they will start to see results fast. Experts tell us that if we cut around 500 calories from our daily diet, or burn them off exercising, then we can expect to lose 0.5kg in weight every week.
多數人開始減肥時，都覺得他們很快會看到結果，專家告訴我們，如果我們每天飲食少吃約500大卡，或是透過運動消耗，我們每週約可減半公斤。
But US researchers from the National Institutes for Health say this is a gross overestimation because the calculation used is flawed. They say it takes much longer to lose the weight - around three years to be precise, according to their work published in The Lancet.
但美國國家衛生研究院的研究人員說，這是嚴重的高估，因為使用的計算方法有誤。他們說，減重要花的時間長得多，準確來說約要3年，根據他們刊登在「刺胳針」的研究。
For example, a year of dieting will result in only half of the amount of weight loss that experts currently predict. This explains why many of us give up within months, because we expect unrealistic results that cannot be achieved.
比方說，節食1年只會減去專家目前預期的一半體重，這解釋了為什麼我們許多人在數個月內就放棄，因為我們預期的是無法達成、不切實際的結果。