How does body water, as a percentage of body weight, change based on stage of the life cycle and lifestyle?

Question

Quizplus · Accepted Answer

At birth, an infant's body weight is about 75% to 85% water compared with a lean adult, who is 60% to 70% by body weight.As muscle mass decreases with age, total body water also decreases.Also, compared with the lean adult, an obese adult may be 45% to 55% water by body weight.This is because the weight is displaced by adipose tissue, which contains very little water.

How Does Body Water, as a Percentage of Body Weight