I attended a talk [1] in which the made a case for the a British manned space programme as another angle on investigating ageing [2]. Radiation, boneloss, and a number of aspects. Ironically my memory of the talk is fading...

[1] http://www.bis-space.com/2014/03/04/12501/uk-space-life-and-...

[2] http://www.ukspacelabs.co.uk/about/5-strategy-r-d-themes