Nurses who work rotating shifts consume more energy, macronutrients and calcium when they work the night shift versus day shift.

A significant increase in calorie, macronutrient and calcium intake on days the night shift was worked compared to days the day shift was worked among female nurses who work rotating shifts was demonstrated. These findings could be extended to other professionals who work rotating shifts, including physicians and allied healthcare personnel. It appears that the difference detected may be influenced by the food supplied by the hospital as well as by increased food intake in general.