Alex Cohen is the Director of Learning and Evaluation for the Richard M. Fairbanks Foundation. In July 2019, the CDC released preliminary estimates that showed, for the first time since 1990, a decline in fatal drug poisonings (overdose deaths) in the United States—by approximately 5 percent from 2017 to 2018. This decline is borne out […]

减少香烟中的尼古丁含量可能会导致一些目前吸烟者吸烟更多——至少在短期内是这样。但也有证据表明减少香烟中的尼古丁有助于减少吸烟。