Yes. Women have a greater risk of developing dementia during their lifetime.

In fact, around twice as many women have Alzheimer’s disease – the most common type of dementia – compared to men.

(the above comes from alzheimers.org.uk)

The article then states:- 'The main reason for this greater risk is because women live longer than men and old age is the biggest risk factor for this disease but it’s much less clear if men and women of the same age have different levels of dementia risk.

Now, we may be thinking 'out of the box here' but bear with us as we present a fictional case study:-

Mary, 75, has recently been diagnosed with dementia, 8 years after her twin brother, John, got his diagnosis. (Is Dementia Hereditary?). In our study, we want to go back beyond diagnosis (maybe 10 or 15 years previously) to see if we can understand the causes and triggers. Mary and John were both born in the post war years (their country of birth has no relevance here). We will ask the question:"Did John receive a better standard of education overall than his twin sister?

The gender gap, worldwide, may well be closing every week - and that includes education, FE opportunities, careers etc.. and, if an increased actvity in the entorhinal cortex and hippocampus over his sister, over the course of their 'middle years', has 'stalled' dementia development (due to John being subjected to more brain stimulation), then the disparity in male v female dementia cases will, surely, fade.

Conclusion:- age is a contributory factor, gender not so much, brain activity makes a difference.