Research into why women are at greater risk of developing dementia than men

Why are women more likely to develop dementia?  The old argument that women live longer does not explain this adequately.  Research is continuing around the world to understand more about all aspects of dementia.  The link below to Alzheimer's Australia details the latest research:

http://dementiaresearchfoundation.org.au/blog/women-over-65-greater-risk-developing-alzheimer%E2%80%99s-disease-men