BBC
Why caffeine makes some people buzz - and others barely notice
Thursday, September 17, 2026
Caffeine affects individuals differently based on genetics, consumption habits, and lifestyle factors. A person's genetic makeup influences how quickly their body metabolizes caffeine, affecting the intensity and duration of its effects. Regular caffeine users may develop tolerance and experience less pronounced effects than occasional users consuming the same amount.
Original reporting: https://www.bbc.co.uk/news/articles/c4gkd4zw564o?at_medium=RSS&at_campaign=rss
