Many obese diabetic patients are afraid to drink water for fear that it will increase their weight when they are carrying out weight loss, which is very wrong! In fact, the intake of the right amount of water is also very important to reduce weight. Without the participation of water, the process of fat decomposition can not be carried out normally, in addition, the reduction of water in the body is not conducive to the kidneys to discharge metabolic waste. But too much water intake, so that the formation of water retention in the body, increasing the burden on the heart, is also very bad for weight loss. Under the condition of good heart and kidney function, the standard of water intake can be mastered at 2200-2700 ml per day. Also note that if you eat more protein food, exercise more intensely, sweat more in summer, bathing, etc. should drink a little more water appropriately. However, dehydration is a common thing for the elderly and is very easy to be ignored. These factors lead to water shortage in the elderly, especially in summer when the temperature is high and the body sweats a lot, the elderly are more prone to water shortage, blood concentration and viscosity rise easily cause blood sugar to rise even more. Therefore, elderly diabetics in the summer to prevent water shortage, drinking water should pay attention to: 1, drink before thirst, feel thirsty because of the elderly response is slow, the actual has been obvious dehydration. 2, eat more water-rich food, such as winter melon, seaweed or radish soup. 3, drink water every morning and before going to bed, drink water after labor and activities, as well as timely replenishment of water loss, half an hour before and after meals and during the meal should not drink a lot of water, each drink should be controlled at 250-300 ml, divided into 2 to 3 times to drink. 4, drink more plain water. Boiled water does not contain preservatives, coloring, sugar and other substances, has a strong biological activity and rich in minerals, easy to absorb.