If you're wondering how to lose weight, you're better off being kept in the dark。

　　According to a study, those living in well-lit towns or cities are more likely to become obese than country dwellers – even if they eat the same amount。

　　Scientists believe that the glow of street lights encourages late-night snacking, and because food eaten close to bedtime is less likely to be burned off, it is often stored as fat。

　　But before you swap calorie counting for a blackout blind, it seems that all unnatural light could have the same effect – including that from computer screens and TVs。

　　American researchers found that mice that were exposed to a dim light at night put on 50 per cent more weight than those whose cages were left dark。

　　英国《每日邮报》12日报道：关灯如何帮助你减肥

　　如果你想得到减肥秘籍，最好一直呆在黑暗里。

　　一项研究表明，与村民相比，照明系统良好的城市居民更有可能发胖——即使饮食量相同。

　　科学家认为街灯的照射会促进午夜食欲，而睡前所进食物不太容易被消耗掉，故而常被转化成脂肪贮存起来。

　　但若想要通过黑暗疗法来减肥，似乎需要注意，所有的非自然光线都能导致肥胖——包括来自电脑以及电视屏幕的光亮。

　　美国研究人员已经发现，与夜晚呆在黑暗笼子里的小鼠相比，笼子被暴露于昏暗光线下的小鼠增重了50%。