只有美国科罗拉多州的18.9%人口是极为肥胖的，降至20%界限。
Only Colorado, where 18.9% of the population is obese, falls below the 20% mark.
尽管已有研究发现了一些端倪，但由于可利用的有效数据极为有限，关于肥胖与出生缺陷之间的联系还不清楚。
The relationship between obesity and other birth defects remains unclear, according to the paper, because limited data is available, though some studies suggest a correlation.
因此，对于肥胖症的积极防治，是目前以及未来都极为重要的课题。
Therefore, the positive control of obesity are extremely important issue in present and future.
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