How many glasses of water a day is best

Healthy people are recommended to drink 1.5 to 1.7 liters of water per day, about 8 glasses. If you suffer from a special disease that requires water restriction, or are dehydrated due to diarrhea or other illnesses, adjustments should be made in accordance with medical advice.
The 2022 Dietary Guidelines for Chinese Residents state that light-working adult women should drink at least 1,500ml of water per day, and light-working adult men should ensure that they drink at least 1,700ml of water, which is generally about 8 cups of water.
Drinking water advocates drinking plain water and drinking less or no sugary drinks. Water plays an important role in the human body. Ensuring adequate daily water intake helps ensure blood pressure, regulate temperature, promote metabolism and maintain life.
Drinking water should be chosen to meet the national drinking water standards for water quality and water sources, avoid excessive drinking for a short period of time, and advocate drinking water in small amounts and many times. If you have a disease that requires you to limit your water intake, or if you lose a lot of water due to diarrhea or other disorders, you should consult a doctor and adjust your water intake according to the doctor’s instructions.