Whether food is healthy or not depends on the amount of food you eat. An important idea of modern nutrition is that there should be more kinds of food and appropriate amount, that is, you should eat everything, but not more. Like poison, eating food in a proper range is the basis for maintaining health and life. If excessive, it will cause the risk of some diseases. In primitive times, people had to chase prey, collect a lot of food, and be alert to various risks, and energy meant the cost of living.
Moreover, as far as animals are concerned, sugar is the main energy supply mode in cells, and a large amount of sugar can provide energy quickly in a short time. Lipid is a kind of energy-supplying substance second only to sugar. When the sugar intake in the body is insufficient, the human body will start endogenous sugar anabolism, and some lipids will be converted into sugar through biochemical reactions to provide energy for cells. Therefore, in humans, when there is overnutrition, it will lead to fatty liver, and when there is undernutrition, it will lead to fatty liver. Hypertrophic fatty liver is the direct accumulation of excess sugar into fat, while dystrophic fatty liver is the accumulation of fat in the liver before it is converted into sugar.
Modern high-fat and high-sugar foods are considered unhealthy, mainly because of human lifestyle. Due to the large-scale application of machinery, the living environment of human beings has been greatly improved, and it is no longer necessary to go out hunting and rely on the weather to eat. In this way, humans are more active indoors, and the energy consumed cannot be consumed. However, the evolutionary history is that human beings prefer high-sugar and high-fat foods, which has caused the risk of overnutrition in this area.
The achievements made by mankind in the past 200 years cannot be achieved in the previous 10000 years of civilization. Due to the progress of science, human's influence on nature has reached its peak, and this situation will accelerate, which will bring about changes in human lifestyle, reduced physical input and increased mental activity, but the eating habits will not change very much. However, the variety of food has increased, but human beings can not get rid of the influence of evolutionary history.
As we all know, instant noodles are fried food and unhealthy food at present. Frying means that the cost of noodles is full of bubbles and water evaporation, and when it meets water, it will quickly fill with water and recover to its original state. When instant noodles were first invented, they were considered as healthy food, mainly because they used a variety of raw materials. Although fried, it can provide people with sufficient energy. Modern people have a fast pace of life. In order to save time, many people like to eat fast food, both Chinese fast food and western fast food can be made quickly, and frying is a common way to cook food quickly.