Okay, so there is something called traditional Chinese medicine, which is a way of using plants, animals, and other natural things to make medicines. In some cases, people used to use parts of the human body for traditional Chinese medicine.
Now, let's say you feel sick, and there's a part of your body that you think might help make you feel better. Maybe it's your hair, your bones, or your blood. Some people in the past used to believe that taking a little bit of that part of your body and making it into a medicine could help cure illnesses.
But nowadays, it's not common to use parts of the human body for traditional Chinese medicine. In fact, many people think it's not a good idea. Scientists have found medicines in plants and other things that are just as effective, and don't involve using parts of people's bodies. So, there are other options available that are much better for us to use for our health than parts of our own body for medicine.