Our food is basically carbohydrates, except fat, pure water, coffee, tea, salt and so on. In fact, it is almost impossible to achieve zero carbohydrate, so there is no zero carbohydrate diet, only a low-carbon water diet.

There are three forms of carbohydrates in food: sugar, starch and fiber. Most people know that sugar is easy to make people fat, because it is a refined carbohydrate and also becomes a simple carbohydrate. In fact, there is another kind of carbohydrate, which is also very easy to make people fat, and that is starch, also called complex carbohydrate.

The common carbohydrate sources in our food are mainly rice, noodles, sugar, vegetables, fruits, beans and so on.

Most of the carbohydrate comes from plants. There are two ways for plants to store carbohydrate, one is starch and the other is dietary fiber. Starch is a way for plants to store energy, and fiber provides structure for plants.

At the same time, starch can also provide energy for us. The energy supply mode of starch is fast and direct, and it is also the energy supply mode chosen by 99% people at present. We often say that people are iron rice steel, and they are hungry without a meal, because rice and flour provide us with energy. If we lack these energy supplies, we will feel weak and hungry.

Fiber is also a carbohydrate, but after entering the human body, it is absorbed slowly and has little calories, so it can keep full for a long time.

Therefore, when calculating carbohydrates in a low-carbon diet, fiber content is generally excluded, because these carbohydrates are good carbohydrates and have little effect on insulin. We usually calculate net carbohydrate = total carbohydrate-fiber, which is what we should pay attention to when reading the nutrient composition table when shopping.