A new study led attention when it found coffee can lead to good breath . The study in Tel Aviv , Israel , was meant to prove coffee leads to bad breath . The lead researcher is now thinking about creating a coffee - based mouthwash .
A new study surprised researchers when it found coffee can lead to good breath . The study in Tel Aviv , Israel , was meant to prove coffee leads to bad breath . The lead researcher is now thinking about creating a coffee-based mouthwash .