Many people like to drink tea. They think tea is good and healthy. So, what did we drink when we were drinking tea? As a kind of drink, the most important thing we drink is water. Needless to say. However, in addition to water, some things in tea will be dissolved into tea during tea making, mainly including:
1. Tea polyphenols
Tea polyphenols are the general name of phenols and their derivatives in tea. They are mainly flavanols (catechins), which account for 60 ~ 80%. Catechins are one of the main components to form the color and flavor of tea. Many people think tea is very fragrant and delicious, mainly thanks to him.
2. Alkaloid
Alkaloids in tea include caffeine, theobromine and theophylline, of which caffeine is the most. Caffeine, also known as caffeine, is why many people feel excited and don't sleep well when drinking tea. In addition, a small amount of vitamins, minerals and amino acids will be dissolved in tea, but it is too small to play a great role.
A very common reason for the saying that drinking tea leads to anemia is that tea contains a lot of tannins. This substance will combine with the iron element in food to form an insoluble substance, which hinders the human body's absorption of iron and leads to iron deficiency anemia. you bet. Tannin does hinder iron absorption, but it is far from our real life. From the current research, drinking tea normally will not have a great impact on the absorption of iron in our daily diet, nor will it lead to anemia.
First of all, we usually don't drink much tea. Only a few grams of tea are used to make a pot of tea, and there are fewer tannins that can be dissolved. In fact, it has little impact on iron absorption and can not produce great waves.
Secondly, although tannin in tea will reduce the iron absorption rate, our daily diet is diverse. Many foods contain iron. As long as we eat more iron rich foods, such as more pieces of lean meat, we don't have to worry about iron deficiency at all. There are many foods that can promote iron absorption, such as vitamin C in vegetables and fruits.
Why is the old lady anemic?
Many people may say: why is the old lady in the news anemic? She drinks tea every day.
In fact, this is the confusion of causality.
In fact, there are two main causes of anemia.
One is the shortage or utilization obstacle of hematopoietic raw materials. To put it bluntly, it is "insufficient supply at the source", such as iron deficiency anemia, which is the most common. In addition, lack of other nutrients required for hematopoiesis will also lead to anemia, such as B vitamins, vitamin C, folic acid, vitamin B12 and so on.
The other is hemorrhagic anemia, which means "too much consumption". For example, the blood coagulation function of the body has a problem, or serious trauma, tumor, peptic ulcer, hemorrhoids or urogenital diseases will lead to hemorrhagic anemia.
However, when people mention anemia, they often only think of iron deficiency, and drinking tea will affect iron absorption. It is considered that drinking tea leads to anemia.
In fact, the causes of anemia are complex. When the elderly are anemic, there may be many other dietary problems, such as insufficient intake of vitamin C and B vitamins, or worry that Sangao seldom eats meat at ordinary times, and the digestion and absorption itself is worse when they are old.
