The magic of water is endless. I often hear people talk about the fear of carbonated water (soda, sparkling water). The pH value of pure water is close to 7, which is almost neutral, while the carbonated mineral water is slightly acidic, or around pH 5.
Schematic／
Harvard Dr. Ruan Jinmei pointed out that in weakly acidic carbonated mineral water, microorganisms are less likely to survive and multiply, so; however, for the human digestive system, the selling point of carbonated water is insignificant, because the daily diet of fruits, Coffee, chocolate, or dairy products all contain acidic ingredients.
So. In this way, the weak acid characteristics of bottled water products are completely irrelevant. After opening the bottle, the gas in the carbonated drink disappeared without a trace, and we just burped a few times at most. Because
In 2017, Palestinian scientists claimed that carbonated beverages can easily cause bloating. The stomach wall releases signals to the brain due to continuous pressure, stimulating the brain to release the so-called "ghrelin" hormone (Ghrelin), thereby enhancing appetite. The results of the study caused an uproar.
The news also caused a stir in Germany, where many Germans like to drink carbonated mineral water. Ruan Jinmei said she did not believe the results of the study.
First of all, this research is limited to animal experiments; moreover, ghrelin is not the only hormone that can enhance appetite, other hormones and factors alsomay increase appetite.
The reason why carbonated mineral water is fresh and refreshing is not only because of the slight acid flavor, but also because of the pleasure brought by the stimulation of oral nerves by small carbon dioxide bubbles. However, carbon dioxide gas can indeed cause stomach upset and increase the frequency of burping. Therefore,
Regardless of whether mineral water has carbon dioxide added to it, what really matters is that you drink it well and stay hydrated. In Germany, Ruan Jinmei recommends everyone to drink tap water
Ruan Jinmei also said that sugar-sweetened beverages are very treacherous, providing calories similar to food, but almost no nutrients, and they will not make people feel full after ingesting them. heat".
For example, smoothie products in the supermarket can be a dangerous source of empty calories. Consumers may think it's good for the body and even drink more; but most smoothies are as high in sugar as Coke, or even sweeter. Next time you go to the supermarket, you might as well look at the ingredient labels. For your reference, 100 ml of cola contains about 11 grams of sugar.
Ads claim that smoothies are healthy because their ingredients are "100 percent pure fruit." However, in order to smooth the taste, The amount of fruit to make a smoothie is amazing. It exceeds the normal intake range, and it is easy to make people feel overwhelmed. However, after making a smoothie, it can be refilled many times
What is particularly interesting is that scientific research states: . Depending on the food texture as a factor, it may be possible toSatiety left and right. It's really hard to feel full when you only eat liquid food.
◎ This article is excerpted from / "The Chemical Effects of Mobile Phones, Coffee, and Emotions: 24 Hours of Chemistry in a Day" by Dr. Ruan Jinmei ◎ Image source/Provided by Dazhi Image/shutterstock
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