Cancer surgeon Dr Richard Babor embarks on a journey to discover how to prevent cancer. Many believe cancer comes down to genes and bad luck – and sometimes that’s true – but we have more power in our own hands than we realise. At least 40 percent of cancers can be prevented by lifestyle changes. Even more, by changing our environments and using medical and scientific interventions. In this four-part documentary series, Dr Richard sorts science from superstition to find out what we can do to keep the cancer wolf from our doors.