Water is essential for our body, which improves physical functions and keeps the body hydrated. But did you know that drinking too much water can also be harmful to health? According to doctors, everyone should know the appropriate amount of water according to their age. **Disadvantages of not drinking enough water** According to Dr. Jonathan Webster, if you do not drink enough water daily, problems such as headaches, fatigue, constipation, lack of concentration and urinary tract infections can occur. **Water requirement according to age and gender** People are generally advised to drink 1.5 to 2 liters of water daily. This can also be met with watermelon, milk, soup or other drinks in addition to water. However, the amount of water varies depending on age and gender. **Water intake according to age** - **Children aged 4 to 8**: About 1.2 liters of water should be drunk daily. Hydration at this age is essential for brain function, digestion and body temperature. - **Youth**: Boys should drink 1.6 to 1.9 liters and girls 1.5 liters of water daily. Exercise and hormonal changes increase water needs. - **60 Adults under 18**: Men should drink 2 liters and women 1.6 liters of water. Exercise, weather, and diet can affect this amount. - **People over 60**: Drink 1.5 to 2 liters of water daily. Thirst becomes less noticeable as we age, so special attention should be paid to hydration to support joint health, digestion, and infection prevention. **Expert Opinion** According to experts, the right amount of water to drink depends on age, gender, activity level, weather, and health. Rehydrate by understanding your body's signals, such as the color of your urine or your thirst. These guidelines will help you stay healthy.