Many say they smoke to “stay focused”. This has led scientists to consider whether nicotine might directly influence people’s ability to think. Here’s what they have found https://www.economist.com/science-and-technology/2025/09/12/what-nicotine-does-to-your-brain?taid=69fa71c5083ff20001077239&utm_campaign=editorial-social&utm_content=discovery.content&utm_medium=social-media.content.np&utm_source=voante