Shuttle Online voters seem uncertain on the value of a traffic light system of health warnings on food labels.

In last week's online poll, 49 per cent of those voting believed the system would be beneficial in the continuing war on obesity.

However, 51 per cent felt it would not have the desired effect.

THIS WEEK'S POLL The former head of the Food Standards Agency said this week there was no clear evidence on the health benefits of organic food. Are you prepared to pay more for organic produce?Go to Editor's Choice panel to cast your vote.