Nature · 1
What percentage of the human body is water?
Answer
70%
The human body is approximately 60-70% water by mass, with water content varying by age, sex, and body composition. Water is essential for all biological functions including nutrient transport, temperature regulation, and waste removal, making it Earth's most important biological solvent. Infants are born at approximately 75% water, while elderly people are typically around 50% water due to declining muscle mass and tissue water content.
💡 Did you know?
Infants are 75% water while elderly people are 50%—water decreases with age.
Other options people guess
- 50%
- 60%
- 80%
Topics
- human body
- biology
- chemistry
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