What information presented by the nurse about macronutrients is incorrect for a patient on a calorie-restricted diet?

The information regarding vitamins being required to promote body functions at the cellular level is indeed accurate and relevant, but it does not pertain to macronutrients specifically. Vitamins are classified as micronutrients, which are necessary for various physiological functions but do not directly contribute calories or serve as primary sources of energy, like macronutrients do. Therefore, in the context of discussing macronutrients for a patient on a calorie-restricted diet, mentioning vitamins does not apply.

In contrast, carbohydrates acting as an essential energy source, proteins being critical for muscle repair, and the recommendation to minimize fats for weight loss are all statements that directly involve macronutrients. Carbohydrates provide energy needed for daily activities and metabolic processes, proteins are essential for maintaining bodily functions and promoting recovery, and the guidance around fat intake is a common dietary approach to reduce calorie consumption in a weight loss context. Therefore, the mention of vitamins does not fit within the discussion of macronutrients aimed at someone on a calorie-restricted diet, making it the incorrect statement in this scenario.