Researchers conducted a study that found alcohol-based mouthwash may increase the risk of certain health problems such as gum disease and certain cancers. The study, led by Jolein Lauman at the Institute of Tropical Medicine in Antwerp, Belgium, was published in the Journal of Medical Microbiology. Participants who used alcohol-based mouthwash for three months showed an increase in certain bacteria species associated with diseases like gum disease and colorectal cancer. There was also a decrease in beneficial bacteria. However, the researchers did not explicitly state that the public should stop using alcohol-based mouthwash.
It was found that alcohol-based mouthwash, like Listerine Cool Mint, had an adverse effect on beneficial bacteria in the mouth, such as Actinobacteria. This could potentially disrupt the nitrate-nitrite-nitric oxide pathway, which is important for cardiovascular health. The study recommended that long-term use of alcohol-based mouthwash should be approached with caution, and other options should be considered, particularly for those with dry mouth conditions or other underlying health issues. The study emphasized the need for healthcare professionals to guide the public on the potential implications of alcohol-based mouthwash use.
Most commercially available mouthwashes contain alcohol, which can kill both good and bad bacteria in the mouth. Alcohol-free mouthwash, on the other hand, does not completely destroy the bacteria but helps maintain a healthier balance in the mouth. For individuals with dry mouth, those undergoing certain medical treatments, or those with specific health conditions, alcohol-free mouthwash may be a better option. People with a history of alcohol abuse or extensive dental restorations may also benefit from using alcohol-free mouthwash over alcohol-based alternatives.
While the study’s findings suggest caution in the long-term use of alcohol-based mouthwash, experts note that its direct link to the development of cancer is not conclusive. Factors like smoking, poor diet, and alcohol consumption may also play a role in affecting cancer risk. Additionally, the study had limitations, such as focusing on a specific group of men who have sex with men and limitations in the sampling of the oral cavity. More research is needed to fully understand the potential implications of regular use of alcohol-based mouthwash on overall health.
Dr. Eric Ascher, a family medicine physician, underscored the importance of individual dental needs in choosing the appropriate type of mouthwash. Dental hygiene and enamel health are important factors to consider when deciding on a suitable mouthwash. He stressed that biannual dental checkups can help determine the best mouthwash for an individual’s specific needs. While the study highlights potential risks associated with alcohol-based mouthwash, it does not suggest that the general public should altogether avoid using mouthwash. Healthcare professionals should provide guidance on the implications of using alcohol-based mouthwash, especially for individuals with specific health conditions or dietary habits that may impact oral health.
