What's really growing in that beard?

As part of the BBC series Trust Me I'm a Doctor, Dr Adam Roberts (UCL Microbial Diseases) has analysed swabs from beards to see which microbes are present. Read: Times (£), More: BBC News, Independent, Metro, Daily Mail, Washington Post, Watch: BBC Two 'Trust Me I'm a Doctor' (from 8 mins 53 secs), Listen: BBC World Service 'World Update' , More: BBC Radio Norfolk 'Chrissie Jackson' (from 16 mins)