Due to the decline of organ function, the body fluid of the elderly is about 15% less than that of the young and middle-aged people, so the heat balance and heat resistance of the elderly are poor. If you don't replenish water regularly and timely, it is easy to have physiological water shortage and increase blood concentration, which will affect the normal circulation of blood and easily induce serious diseases such as hypertension, cerebral thrombosis and myocardial infarction. Therefore, the elderly should always take the initiative to drink water, and don't wait until they are thirsty.
There are many disadvantages for old people to drink too much.
Some elderly people like to drink a lot of boiled water or other drinks after physical exercise and housework. This "emergency irrigation" method of drinking water will suddenly increase the burden on the heart, make the blood concentration suddenly drop, lead to an accelerated heartbeat and cause palpitation and dizziness. Patients with heart disease are more likely to cause danger, which will suddenly dilute gastric juice, damage gastric mucosa, and affect appetite and digestive function of the stomach. At the same time, the water supply speed is too fast, so it is difficult for water to be absorbed normally by body tissues for a while, which can not effectively quench thirst, and can also cause a lot of sweating, leading to abnormal heart rhythm and blood pressure.
Salt water and tea are the best ways to quench your thirst.
Sweating in summer will take away trace elements such as salt, vitamins, potassium and magnesium in the body. If you only drink boiled water, the water entering the body is not only difficult to enter the blood vessels normally and stay in the cells, but also easy to penetrate into sweat glands and bladder and be quickly excreted, which is not only difficult to quench your thirst, but also causes discomfort such as palpitation and dizziness. If a small amount of salt (about 1 g salt in 500 ml water) is added to the drinking boiled water, the body can keep water and quench its thirst. Drinking tea every day in midsummer can not only replenish water and essential substances such as vitamins lost by the human body, but also promote fluid production to quench thirst, refresh the mind, enhance appetite, and have the functions of detoxification and sterilization.
Drinking water in the morning can prevent diseases.
After getting up, if you drink two glasses of water on an empty stomach, it can not only effectively replenish the water shortage caused by physiological dehydration, but also reduce the blood viscosity, accelerate blood circulation, and promote the rapid discharge of metabolic wastes such as feces and urine, which plays an important role in preventing cardiovascular and cerebrovascular diseases such as cerebral embolism, cerebral thrombosis, hypertension, arteriosclerosis and angina pectoris, as well as urinary calculi and urinary tract infections.