Middleaged adults who smoke tended to perform poorly on tests of memory and reasoning compared to nonsmokers, adding to the list of reasons not to smoke, French researchers said on Monday.

• 法国研究人员于本周一称，与不吸烟者相比，中年吸烟者在记忆力和推理测试中的表现较差。这无疑是戒烟的又一个理由。