The first question is, how much water should I drink every day? It is not accurate to say "drink 8 glasses of water every day". This statement first came from a book published by 1974, but people put forward that "drink 6 to 8 glasses of water every day". The water here not only refers to pure water, such as coffee, milk and even beer, but also adds up to 6 to 8 cups. Most importantly, there is still no scientific basis for this statement.
Regarding how much water should be drunk, the suggestion of the American Institute of Scientific Engineering and Medical Health is that for most healthy people, drinking water after thirst can already meet the daily physical needs. It should be noted that adults can "drink water before they are thirsty", but for children aged 7 to 9, drinking water can improve their concentration. Because children of this age are more prone to lack of water, which will lead to the decline of reaction ability, concentration and memory, so children are the people who need to drink more water. If there are children at home, remember to let them drink more water than adults.
The second question is, why on earth should we stay away from carbonated drinks? Carbonated drinks are really bad for your health, but the reason is not that it will lead to osteoporosis. There is no strong evidence that carbonated drinks can cause osteoporosis. In fact, the real reason for not drinking carbonated drinks is sugar. Sugar can make people fat and increase the risk of diabetes. Drinking an average can of carbonated drinks every day will increase the risk of diabetes by 25%.
The third question is, should we drink more freshly squeezed juice? Although fruit juice contains fiber, vitamins, minerals and other elements needed by the human body, the more you drink, the better. There are two reasons: first, the fiber contained in fruit juice is actually very low. For example, a glass of orange juice actually contains less than a quarter of the fiber of an orange; The second reason is sugar. The daily sugar intake recommended by the World Health Organization is 25g, but a glass of 250ml orange juice contains 24g of sugar. In other words, as long as you drink a glass of orange juice every day, your healthy sugar intake quota will be used up today.
The fourth question is, is drinking milk really that healthy? A recent study has proved that drinking milk can really help those children with slow growth and short stature to strengthen their height development, but there is no way to make them exceed the normal height of other children who don't drink milk, just to help them catch up with others. Whether milk is helpful to adults is still inconclusive, but the more milk you drink, the better. A study of 20 14 found that people who drank three cups of milk every day for 20 years had a higher mortality rate than those who drank 1 cup of milk every day.
The fifth question is about coffee and tea. In fact, coffee is not so bad and tea is not so healthy. Coffee first. Coffee is often criticized as addictive, but in fact it is easy to quit caffeine addiction. As long as the amount is reduced every day, it will have obvious effect in 4 weeks. Moreover, coffee is rich in an element called chlorogenic acid, which can slow down the body's absorption of glucose and reduce the risk of diabetes.
And we generally believe that healthier tea is really good for the human body, but the benefits are not so great. For example, tea tannin in black tea helps to lose weight, but research shows that the influence of drinking tea on weight is almost negligible and has nothing to do with human health. Moreover, drink tea in moderation and don't drink too much. The article said that there was a woman who drank a lot of tea every day for 17 years, and all her teeth fell out before she was 50 years old.
To sum up: the statement of eight glasses of water a day is not very scientific. Children should drink more water, and adults are thirsty to drink; Drink less carbonated drinks and fruit juice, mainly because there is sugar inside; Drinking milk is not necessarily good for adults, but it is harmful to drink too much; Coffee is not as "unpalatable" as we thought, and tea is not particularly helpful to health. In short, we should pay attention to what we drink in moderation. When judging a drink, we need to pay attention to the composition of sugar. The above is the research and interpretation of several common drinks for your reference.
This article is from: New Scientist 2065438+March 2007 1 1.
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