这世界上到底是胖子多还是瘦子多？
<p><span word="The">The</span> <span word="number">number</span> <span word="of">of</span> <span word="obese">obese</span> <span word="people">people</span> <span word="in">in</span> <span word="the">the</span> <span word="world">world</span> <span word="now">now</span> <span word="outnumber">outnumber</span> <span word="the">the</span> <span word="underweight">underweight</span> <span word="people">people</span>, <span word="according">according</span> <span word="to">to</span> <span word="analysis">analysis</span> <span word="of">of</span> <span word="the">the</span> <span word="trends">trends</span> <span word="of">of</span> <span word="adult">adult</span> <span word="body">body</span>-<span word="mass">mass</span> <span word="index">index</span> <span word="in">in</span> 200 <span word="countries">countries</span> <span word="over">over</span> <span word="the">the</span> <span word="last">last</span> 40 <span word="years">years</span>.</p><p>根据200个国家最近40多年的成年人体重指数（<span word="BMI">BMI</span>）趋势分析，全球肥胖人口数量已超过体重过轻人口数量。</p><p><span word="The">The</span> <span word="major">major</span> <span word="study">study</span>, <span word="published">published</span> <span word="in">in</span> <span word="the">the</span> <span word="medical">medical</span> <span word="journal">journal</span> <span word="The">The</span> <span word="Lancet">Lancet</span>, <span word="shows">shows</span> <span word="that">that</span> <span word="the">the</span> <span word="number">number</span> <span word="of">of</span> <span word="obese">obese</span> <span word="has">has</span> <span word="risen">risen</span> <span word="to">to</span> 641 <span word="million">million</span> <span word="from">from</span> 105 <span word="million">million</span> <span word="in">in</span> 1975.</p><p>一份发表于医学期刊《柳叶刀》（<span word="The">The</span> <span word="Lancet">Lancet</span>）上的主要研究表明，全世界肥胖人口已经从1975年的1.05亿增长到现在的6.41亿。</p>
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