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Losing weight is not only good for the waistline, it is good for the brain。 保持健康的体重不仅能让你拥有苗条的腹部线条，同时还有益于你的大脑。 Scientists say substantial weight loss improves cognitive functions like memory and concentration。 科学家们发现，减去多余的体重的将提高大脑的工作能力，比如说更加良好记忆与集中力。 Researchers carried out tests on 150 volunteers, all weighing over 21 stone, and compared them with results from healthy people。 研究人员研究了150名体重超过21英石的人员的各方面数据，并将之与健康人群的数值相比较。 In some tests, including memory exams, almost a quarter of the overweight participants scored low enough to be considered learning disabled。 在某些例如记忆力的测试中，近四分之一的体重超重者得分低到了基本可以被评价为有学习障碍。 Many of them had additional health problems, such as high blood pressure, type two diabetes and sleep apnea。 他们其中的很多人还有附加的健康问题，比如所高血压和二型睡眠呼吸暂停等。 After the initial round of testing, two-thirds of the volunteers had gastric bypass surgery to reduce the size of the stomach and lost an average of about 3st 8lbs。 | 
