Calcium pills 'raise female dementia risk after a stroke'
Calcium supplements dramatically raise the risk of dementia in women who have suffered a stroke, a study has found.
The pills, taken by thousands of women in the UK to stave off osteoporosis after the menopause, were linked to a seven-fold increase in the chances of developing dementia in old age.
In women with no stroke history whose brains showed signs of less serious damage caused by impaired blood flow, taking calcium tripled the risk.
There was no association between calcium supplements and dementia among women who had no evidence of cerebrovascular disease.
During the course of the study at the University of Gothenburg in Sweden, published in the journal Neurology, researchers found that overall, women who took calcium supplements were twice as likely to develop dementia as those who did not.