New studies suggest starting hormone replacement therapy (HRT) in the 40s and 50s can protect brain health, contrary to previous dementia concerns.

The study also found that women who naturally had lower exposure to oestrogen over their lifetime seemed to have a 16 per cent reduced odds of dementia

Biggest ever study of HRT following 183,000 post-menopausal women in Britain shows how the treatment appears to boost cognitive health and cut dementia risk