Manflu, the phenomenon that men experience the symptoms of viral illness more than woman, is usually used with derision - but a new review, published in the Christmas edition, is asking - is there a plausible biological basis for this sex difference?

Kyle Sue is a clinical assistant professor in family medicine at Memorial University of Newfoundland, and a GP in northern Canada - and has been looking at the research on sex difference in immune response.

Read the full article:
http://www.bmj.com/content/359/bmj.j5560