British hair and scalp specialist Carol Walker told the Daily Mail that facial hair can lead to more frequent skin infections and to germs being passed on to others.
Another factor? People with beards tend to touch them a lot, and this transfers germs from the hands to the face.
Two university scientists told the site that scientific evidence supports Walker’s theory about beards spreading bacteria and infections between people. “Men with beards do harbor a significant number of bacteria, more than non-bearded men and women,” Dr. Anthony Hilton said, adding that on average, a person’s face has some 20,000 types of bacteria on it.