What's the difference between nanometer medicine and traditional medicine?

We know that the human body consists of many organs, such as brain, heart, liver, spleen, stomach, intestine, lungs, bones, muscles and skin. Organs are composed of various cells, which are the organizational units of organs, and the combination of cells shows the functions of organs. According to the present understanding, the main components of cells are various biomolecules such as protein, nucleic acids and lipids, which are collectively referred to as biomolecules, and there are hundreds of thousands of them. Biomolecules are the basic components of human body, and each of them has its own unique biological activity. It is their different biological activities that determine their division of labor and role in the human body. Because the human body is composed of molecules, all diseases in the human body, including aging itself, can be attributed to the changes of molecules in the human body. When molecular machines in human body, such as ribosome for synthesizing protein and enzyme for DNA replication, fails or works abnormally, it will lead to cell death or abnormality. From the molecular microscopic point of view, the current medical technology can not reach the level of molecular repair. Nano-medicine is to make up for this deficiency. At the molecular level, it can use a series of tiny tools for diagnosis, medical treatment, disease prevention, trauma prevention, pain relief, health care and health improvement. Moreover, at present, some diseases that are difficult to treat will be well treated by nano-medical technology. Therefore, the future of nano in medical desks will be limitless.

With nanotechnology, people will know themselves from the molecular level, create and use nano-devices and nanostructures to prevent and treat diseases and improve the whole human life system. But this process is not as simple as imagined.

First of all, we need to understand the molecular basis of life, and then develop from scientific understanding to engineering technology, and design and manufacture a large number of nano-devices with incredible and peculiar effects. The geometric scale of these micro nano-devices is only about one thousandth of that of hair, and they are assembled by molecules, which can play the role of similar tissues and organs and can play a more accurate and effective role. They can swim around in the human body, even in and out of cells, and complete their special mission in the microscopic world of the human body. For example: kill budding cancer cells, repair distorted genes, catch bacteria and viruses that invade the human body, and destroy them before they get sick; Detecting the changes of chemical or biochemical components in the body and releasing drugs and trace substances needed by the human body in time can improve people's health in time. Nanomedicine in the future will be powerful, and it will be surprising, because the drugs and medical devices that play a role in it are invisible to the naked eye. The ultimate realization of nano-medicine will make human beings have healthy and tough bodies.