Drinking water (below)

Source: Health News

Shanghai Jiaotong University School of Medicine Affiliated Ruijin Hospital Clinical Nutrition Wang Ye Cao Weixin

      Question 6: During pregnancy, how much water is appropriate every day?

During pregnancy, the total blood volume of mothers will increase by 40% to 50%, so it is necessary to ensure adequate water supply. However, if you drink too much, it will cause or aggravate edema. Therefore, pregnant women should also moderate water, about 1500 ml per day, generally not more than 2000 ml, and should be a small amount of drink, drink less before going to bed. However, each person's drinking water should also depend on the environment and personal circumstances.

      Question 7: summer drink ice water to quench their thirst, good for the body?

People always like to drink cold water in the summer heat thirst quencher. But ice water will stimulate the gastrointestinal tract, causing gastrointestinal mucosal vasoconstriction, leading to gastrointestinal spasm, abdominal pain, diarrhea, vomiting and other phenomena, but also affect the digestion and absorption of food. For the gastrointestinal tract itself is more vulnerable to children more vulnerable. For the elderly, drinking ice water may also induce cardiovascular and cerebrovascular accident. In addition, from the perspective of traditional Chinese medicine, a large number of drinking ice water may lead to poor pore leakage, waste heat accumulation, easy to cause heat stroke. Therefore, should try not to drink or drink less low temperature ice water, even if you drink, cold time is best not more than half an hour. For the elderly, children and menstrual women are advised not to drink ice water.

      Question 8: drink the more the better? Some people say that fat people will drink fat, it makes sense?

      Although water is very important to the human body, especially in certain special periods, such as colds, after exercise, do need to add more water, but the water is not the better. Long-term excessive drinking water, may lead to long-term overload of the kidney work, prone to impaired renal function. For some special groups, such as heart failure patients, patients with renal failure, such as drinking too much, it will increase the burden on the heart and kidneys, leading to exacerbations. So how much water should be given, depending on the condition to listen to the doctor's specific recommendations. In addition, the summer while a long while sweating a lot of drinking water, there will be weakness, headache, vomiting, vertigo and other symptoms, that is, "water poisoning." That is, the continuous increase in water and salt loss or concentration decreased, there is hypotonic dehydration to cell edema, severe cases due to blood dilution caused by brain cell hypoxia, brain cell edema, there will be headache, vomiting, lethargy, Respiratory distress and other nerve stimulation symptoms, and even coma, convulsions until life-threatening. Therefore, drinking water can not be excessive, for healthy adults, the daily drinking water 1500 ~ 2000 ml is appropriate.

      Question 9: Before exercise, should we drink plenty of water?

      Exercise, especially in summer, will make the body lose a lot of water. Therefore, some people think that should be prevented before, that is, before the exercise a lot of water. Although the exercise before the first to add some water is feasible, but also pay attention to the amount, if too much, there will be fullness of the stomach, hinder breathing, and may dilute the blood, blood volume increases, increase the burden on the heart, but not Conducive to movement. Therefore, it is generally recommended that you drink 300 to 500 milliliters of water 20 to 30 minutes before exercise, and the rest are added during exercise and after exercise. Summer is easy to sweat a lot, if the exercise time is longer, you can add a small amount of water in the boiled water or use some healthy potassium, sodium and other electrolyte sports drinks.