A new study conducted by Queen Mary University of London researchers, has reportedly revealed that use of antiseptic mouthwash may lead to an increased risk of heart attack and stroke. Kapil, Vikas, et al., “Physiological role for nitrate-reducing oral bacteria in blood pressure control,” Free Radical and Biology Medicine, February 2014. The study observed the blood-pressure levels of a small group of healthy individuals who used the commonly prescribed antiseptic mouthwash Corsodyl, which contains 0.2 percent chlorhexidine gluconate by volume. Noting that individuals in the group experienced a rise in blood pressure between 2 and 3.5 units within 24 hours of using the mouthwash, lead researcher Amrita Ahluwalia said that chlorhexidine gluco- nate can kill “good” bacteria used by the body to create nitrite, a component that controls blood vessel dilation. Even small rises in blood pressure can have “significant impact on morbidity and mortality from heart disease and stroke,” she noted.