A survey has found that four in ten people are unaware that a poor diet can increase their chances of needing cancer treatment in the future.
Research commissioned by the World Cancer Research Fund (WCRF) found that 41 per cent of people did not know of the link between diet and cancer, while 44 per cent were unaware that being overweight increases a person's risk of developing the disease.
Meanwhile, 42 per cent did not realise that increasing their levels of physical activity could help to reduce their cancer risk.
Lisa Cooney, head of education for the WCRF, said: "The scientific evidence is clear that people can reduce their risk of cancer through eating healthily and reducing their intake of things like alcohol and processed meat.
"But these results show that there are still millions of people in Britain who are unaware of how they can take simple steps to reduce their cancer risk."
According to experts, people can reduce their risk of developing cancer by giving up smoking, drinking less alcohol, maintaining a healthy body weight, eating a balanced diet, leading an active lifestyle and taking care in the sun.