More than 50 million people have dementia worldwide. It's expected that number will increase to almost 80 million people by 2030.

Despite that, there's very little that can be done to treat a person, or even prevent a person from getting dementia.

But in a massive breakthrough scientists from the UK have developed a blood test that can predict whether a person is at risk of developing dementia.

The CEO of Neuroscience Research Australia, Professor Matthew Kiernan joins John to discuss the research and explain how important it will be for treating people with dementia.

Listen to John Stanley Monday-Thursday from 8pm-12am on 2GB/4BC 

See omnystudio.com/listener for privacy information.