西方一项研究发现，你会随着密友的增胖而变胖，“与子同胖”是否能“与子同瘦”呢？
When one person gains weight, their close friends often follow. Researchers have just offered evidence in a study that says obesity appears to spread through social ties. But the findings might also offer hope. If friends help make obesity acceptable, then they might also be influential in lo…