Breast cancer is the world’s most common cancer and researchers now say a lack of physical activity may be to blame.

But there are some steps that can be taken to reduce the risk.

The World Cancer Research Fund now says there’s a definitive link proving physical activity reduces breast cancer risk.

Press PLAY below to hear what can be done to reduce the risk of breast cancer

Leading breast cancer surgeon Dr Chantal Thornton says “many of the things we’re doing to ourselves are helping to cause breast cancer”.

“We can’t change our genetics and our family history but we can change our lifestyle to try and reduce our risk,” Dr Thornton said.

“It’s not rocket science.”