本期内容：

Cancers linked to obesity are rising at a faster rate in millennials than in older generations in the United States, the American Cancer Society has said. It said a steep rise in obesity in the past 40 years may have increased cancer risk in younger generations. And it warned the problem could set back recent progress on cancer. Researchers say obesity is not only one factor leading to cancer - the environment, genetics and other issues can also come into play. But scientists are clear that losing even small amounts of weight can help reduce the risk of cancer.

cancer: n. 癌症
obesity: n. 肥胖
obese: adj. 肥胖的
millennial: n. 千禧世代
steep rise: 急剧增加
dramatic/sharp rise: 急剧增加
set back: 耽误；耽搁；延缓
progressv. 发展；进步
come into play: 发挥作用

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