Have you been using mouthwash on a daily basis? May it is time to stop as it may raise the risk of developing diabetes. According to a study, using mouthwash twice a day significantly raises the risk of developing type-2 diabetes. US researchers from the Harvard School of Public Health claim that washing with the anti-bacterial fluid could be killing beneficial microbes which live in the mouth and protect against the conditions. According to the research, people who used the product twice a day were around 55 percent more likely to develop diabetes or dangerous blood sugar spikes, known as pre-diabetes, within three years.