What percentage of the human body is primarily made up of water?

The human body is primarily composed of approximately 60-65% water, which is essential for a variety of physiological functions. Water is vital for maintaining body temperature, serving as a solvent for biochemical reactions, transporting nutrients, and removing waste products. This percentage can vary based on factors such as age, gender, and body composition; for instance, infants have a higher water content than adults. The range of 60-65% reflects the average in healthy adults, particularly in males, whereas women's water composition tends to be slightly lower due to a higher proportion of body fat. Understanding this percentage is important in recognizing the significance of hydration in maintaining overall health and preventing dehydration.