Side effects of bloodletting therapy

There are some side effects of bloodletting therapy, the first one is unhygienic, it is easy to get infected with bacteria. The second side effect is that the amount of bloodletting is not well controlled, which can easily cause anemia. The third side effect is that the equipment and instruments should be sterilized before use, because they are all tools that are used repeatedly, so they must be sterilized, otherwise it is easy to get infected with some viruses.