Scientists have dismissed recent claims that foods such as chips, crisps and toast could raise the risk of cancer.

A few months ago Swedish scientists rang the alarm bells when they found high levels of a chemical called acrylamide - which can cause cancer in animals - in high carbohydrate foods including crispbreads, cereals, bread and biscuits.

However, a study of people’s eating habits in the US, published in the British Journal of Cancer, found that the levels are not high enough to increase the risk of the disease in humans.

In some cases, the chemical even appeared reduce the chances of developing the disease, said researchers from the Harvard School of Public Health in Boston.