Mandela not in danger! Of what? Dying in his nineties?

After announcing this morning that Nelson Mandela has been admitted into hospital for tests, BBC Radio 4 News continued by saying he was ‘not in danger.’  Much loved though he is, Nelson Mandela is 92, and as far I am aware, not immortal.  Clearly his body is beginning to pack up, and he is getting … More Mandela not in danger! Of what? Dying in his nineties?