Adults should drink 1000 - 1200 ml of water per day.

The amount of water an adult should drink per day is determined by the body's fluid metabolism, based on body weight and body surface area.

Calculations can be made based on body weight or body surface area:

Daily water requirement (ml) = body weight (kg) X 40 (ml).

Daily water requirement (ml) = body surface area (square) X 1500 (ml).

Adults' daily water intake is 2000 - 2500ml, of which 1000 - 1200ml is drinking water, 700 - 1000ml is food water, and 300ml is water produced by oxidizing sugar, fat, and protein in the body.

Expanded Information

Harms of Inadequate Drinking Water

Harms of Inadequate Drinking Water

Harms of Inadequate Drinking Water< /p>

When dehydrated, in addition to feeling thirsty, there will be dry skin, cracked lips, weakness, urination, dizziness, headache and other phenomena, and in severe cases there will be fever, irritability and other mental symptoms. Insufficient water will lead to malfunction of gastrointestinal digestion, blood transport of nutrients, body fluid concentration regulation, etc., and will also trigger back pain and deformity of the knee, arthritis and other diseases.

The dangers of drinking too much water

Excessive drinking water will lead to excessive loss of salt in the human body, the beginning of dizziness, weakness, heartbeat acceleration and other symptoms, and in severe cases, even spasms, impaired consciousness and coma, that is, water intoxication. But too much water in the body or water intoxication is rarely seen in normal people, and is usually seen in people with abnormal liver, kidney and heart function.

Baidu Encyclopedia: Drinking Water