Beards, as you may have noticed, are back. The chin-strap, the goatee, the neck beard and the Van Dyke, they all have their fans. But with beards sprouting everywhere, like new grass in the spring sunshine, there has inevitably been a backlash.
Critics claim that beards are not only an irritating affectation but can potentially harbour unpleasant bugs. So, what's the evidence that beards pose any sort of health risk?