A recent study has raised concerns about the potential health risks associated with regular use of Listerine mouthwash. Researchers found that daily use of Listerine could lead to an increase in bacteria linked to cancer and infections. The study suggests that alcohol-based mouthwashes may disrupt the natural balance of bacteria in the mouth, potentially contributing to health issues. Experts recommend using alcohol-free alternatives and limiting the use of alcohol-based mouthwashes.