Essential Nutrient
water
the body must have water to function people can live more than a month without food.
water
Reasoning
Water is colorless, tasteless and odorless. Because of its numerous and diverse functions in the body, it is often regarded as the most important nutrient. Most people can survive no more than 7 days without water.Water helps maintain a healthy weight. It is hard to distinguish between hunger and thirst. If you feel hungry, drink some water first and then reassess your hunger status.