This article seems to say chilli peppers can't hurt you. However just a few days ago the Journal of Emergency Medicine reported that a ghost pepper (a very hot chilli pepper) caused an esophageal rupture - a serious and potentially life threatening injury.
http://www.jem-journal.com/article/S0736-4679(16)30256-6/ful...
Why is the BBC not aware of this? A simple search would have yielded a more timely, accurate and interesting story. Somewhat disappointing.