NHS Behind the Headlines calls BS on the Star and Express: "This study cannot be taken as evidence that eating chocolate, and specifically Mars bars, will reduce your risk of bowel cancer, or any other type of cancer, or that it is ‘good for you’."

The new NHS web site has a ‘Behind the headlines’ section which will provide ‘an unbiased and evidence-based analysis of health stories that make the news’. It will link to news stories where available and aims to espond on the day.