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Water content in the human body

With increasing age, the water content in the human body will gradually decrease. The embryonic water content can reach 98%, the average fetus at 3 months is 91%, the average at 8 months is 81%, and the average at newborns is 80%. After 10-16 years of age, it gradually reaches adult levels. Water content is 50% for men over 60 years and about 45% for women.

Don't drink water only when you are thirsty

Do not drink water only when you are thirsty: Most people think of drinking water only when they are thirsty. In fact, when the brain senses the dehydration signal, the body has been "dry" for a long time. "Dry mouth" is already the last sign of water shortage. When people age, the sensitivity to water shortage becomes weaker. Some elderly people can't feel thirsty even when their mouths are obviously dry, the water needs cannot be met. The correct way to drink water: drink regularly with suitable amount each time, do not to wait until you are thirsty.

How the human body absorbs water

Unlike the digestion and absorption of ordinary food, when water entering the digestive system, most of the water is directly absorbed by the small and large intestines. Water is absorbed into the intestinal capillaries or lymph vessels through the intestinal mucosa, then becomes part of the blood.