Mid-life stress 'precedes dementia'
The study only looked at women, not men.
Mid-life stress may increase a woman's risk of developing dementia, according to researchers.
In a study of 800 Swedish women, those who had to cope with events such as divorce or bereavement were more likely to get Alzheimer's decades later.
The more stressful events there were, the higher the dementia risk became, BMJ Open reports.