Associations between shift type, sleep, mood, and diet in a group of shift working nurses by Heath G, Dorrian J, Coates A Among shift working nurses, night shift, more than afternoon or morning shift, was associated with mood disturbance, increased energy intake, and increased proportion of carbohydrates. Reduced sleep efficiency was also associated with higher carbohydrate intake. Results highlight the importance of examining changes across different shifts in a schedule in the context of gender and mood, as all factors influence diet.