Help make Alexa smarter on Alexa Answers. Sign in with Amazon


How much water is the human body made out of?

2 Answers

Up to 60% of the human adult body is water. According to H.H. Mitchell, Journal of Biological Chemistry 158, the brain and heart are composed of 73% water, and the lungs are about 83% water. The skin contains 64% water, muscles and kidneys are 79%, and even the bones are watery: 31%.

{{ relativeTimeResolver(1572104457659) }}

Points points 141

The average adult human body is 50-65% water, averaging around 57-60%. The percentage of water in infants is much higher, around 75-78% water, dropping to 65% by one year of age. Body composition varies according to gender and fitness level because fatty tissue contains less water than lean tissue.

{{ relativeTimeResolver(1570496072509) }}

Points points 118

Join Alexa Answers

Help make Alexa smarter and share your knowledge with the world