University professor warns: If you don't clean in the evening, you risk stroke and heart attack.. As of: March 1, 2024, 5:00 p.m By: Andreas Beez CommentsPressSplit Brushing your teeth is particularly important in the evenings - otherwise it's easier for treacherous bacteria.

Professor Hannes Wachtel explains the very specific dangers. The recommendation is to brush your teeth at least twice a day. There are around 700 different types of bacteria lurking in the mouth. Most are harmless, but a few can cause serious damage to the body.