What causes cancer? If we know this then we can try to find ways to prevent it.
That’s why a review published on 21st May is important. It looks at all the evidence around a type of cancer called childhood acute lymphoblastic leukaemia (ALL), using evidence from published studies to try and pinpoint a cause.
And the scientist behind the review, Professor Mel Greaves, an expert in childhood leukaemia at The Institute of Cancer Research, London, has presented his theory, based on 30 years of work on the topic.
It’s important to say that the review only looked at childhood ALL. Because different types of cancer have different causes, these results won’t be the same for other forms of the disease.