– Dr Rachel Greig, senior policy officer at Breakthrough Breast Cancer
It is startling to think that we could have a million older women living with breast cancer within a generation.
It shows that we have a rapidly ageing population - but also that we are getting much better at treating women with breast cancer.
However, increasingly we should think less about the age of patients, and more about their individual need. This will ensure the best standards of care for women living with the disease.
– Ciaran Devane, chief executive of Macmillan Cancer Support
The NHS needs to take heed of these figures. It is already struggling to provide adequate care for older breast cancer patients.
We need to change the way we care for older breast cancer patients now - so that we are prepared for such a dramatic increase in numbers.
The number of pensioners living with breast cancer is set to quadruple by 2040, researchers said.
In less than three decades there will be 1.2 million women aged over 65 living with the disease - almost four times today's figure of 340,000, according to researchers from King's College London.
At present, 59% of all breast cancer survivors are over the age of 65 but the research, funded by Macmillan Cancer Support, suggests that this figure will increase to 73% by 2040.