No, the human body cannot live without water. Water is essential for the functioning of our bodies and is involved in numerous vital processes. Here are some reasons why water is crucial for human survival:

1. Hydration: Water is the main component of our cells, tissues, and organs. It helps maintain the balance of body fluids, regulates body temperature, and aids in digestion and absorption of nutrients.
2. Transportation: Water serves as a medium for transporting nutrients, oxygen, and waste products throughout the body. It plays a vital role in the circulatory system, allowing the blood to carry oxygen to cells and remove waste materials.
3. Lubrication: Water acts as a lubricant for joints, allowing them to move smoothly. It also lubricates the digestive system, helping with the breakdown and absorption of food.
4. Temperature regulation: Water has a high heat capacity, which means it can absorb and release heat without significant changes in temperature. This property helps regulate body temperature and prevents overheating.
5. Waste elimination: Water is involved in the excretion of waste products through urine, sweat, and bowel movements. It helps flush out toxins and maintain kidney function.

If a person does not consume enough water, they can become dehydrated, leading to various health problems. Severe dehydration can be life-threatening. It is recommended to drink an adequate amount of water daily to maintain proper bodily functions and overall health. The exact water intake requirements may vary based on factors such as age, sex, physical activity, climate, and overall health.