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FALSE:::::::: Up to 60 percent of the human body is water, the brain is composed of 70 percent water, and the lungs are nearly 90 percent water. About 83 percent of our blood is water, which helps digest our food, transport waste, and control body temperature. Each day humans must replace 2.4 litres of water, some through drinking and the rest taken by the body from the foods eaten.
Babies have the largest percentage at 78% at birth. Once they have reached a year old the amount reduces to 65%. In male adults, the water percentage is about 60% although lean tissues have more water compared to fat tissues. Adult women have more fat making up their body than men. Therefore, they have bodies made of about 55% water. Kids and babies have a larger body water percentage than adults.