The latest official statistics from the Office for National Statistics (ONS) on deaths registered in England and Wales, in 2013, show that dementia was the leading cause of death for women (12.2% of all female deaths). The leading cause of death for males in England and Wales during 2013 was ischaemic heart disease (15.4% of all male deaths).
Gallagher, J. (2014). Dementia is leading cause of death for women. London: BBC Health News, October 29th 2014.
This relates to:
Deaths Registered in England and Wales (Series DR), 2013. Fareham [Hampshire]: Office for National Statistics, October 30th 2014.