A registered nutritionist is calling on all fast-food chains to display easy to interpret warning signs on high-calorie meals and provide nutritional information on all their items including combos, Newshub reports. Dr Sally Mackay says customers need help to understand exactly what they’re ordering. “We would also like to see every chain have nutrition information for all of its products.” Dr Mackay was “really surprised” at the difference in the combos. She found that some were significantly more unhealthy compared to others.