What category of nutrients is the most important of all?

While all nutrient categories—carbohydrates, proteins, fats, vitamins, and minerals—are essential for health, water is often considered the most vital nutrient. It plays a crucial role in various bodily functions, including temperature regulation, nutrient transport, and waste elimination. Without adequate water intake, even the most balanced diet cannot sustain health. Therefore, hydration is fundamental to overall well-being.