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Among U.S. teens, unsuccessful attempts to quit smoking rose in 2020 after years of decline—a reversal that might relate to the recent rise in vaping.
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A treatment for severe skin inflammation that works well in lean mice made the condition worse in obese mice because of immune-cell changes associated with obesity.
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Viruses isolated from people with inflammatory bowel disease, or IBD, triggered inflammation in human cells and mice, while those from non-diseased guts didn’t.
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