The Food Lion grocery chain is considering using nutritional labelling on the products it sells, such as Hannaford's Guiding Stars programme.

The programme - which ranks a product's level of nutritional value and is applied to some 27,000-plus items - has been very successful for Hannaford. Food products earn credits for ingredients such as minerals, vitamins, fibre and whole grains, and debits for trans fats, saturated fats, cholesterol, added sugar and sodium.

The 1200-store North Carolina-based chain, part of the Delhaize Group, has also launched a loyalty programme under its Bloom banner, which tracks customer purchases and rewards them with quarterly rebates or donations to local charities.