Is natural medicine chemical toxic? Does it have a great influence on the skin and body? Will graduate students majoring in natural medicine get old and ugly after graduation? Is it not suitable for g

Is natural medicine chemical toxic? Does it have a great influence on the skin and body? Will graduate students majoring in natural medicine get old and ugly after graduation? Is it not suitable for girls to learn? ... Whether it is natural medicine or synthetic medicine, it is very toxic! Don't be as naive as someone upstairs who thinks that the word "natural" is not poisonous! The extraction of natural drugs also needs a lot of solvents, so does the chromatographic column. It would be even more tragic if you accidentally catch up with the project and make it more poisonous. Once, a senior lost sleep for half a year while doing a project. Don't think that she didn't take proper protective measures. Some things can't be hidden. Boys basically regret doing this, but girls don't regret it. I regret it now! Many toxic substances can't be metabolized in the body. One of my classmates, who did this in their factory, died before the age of 60. He was afraid to attend the memorial service and jumped ship directly. There used to be a senior who said she had nightmares on weekends, and now it's my turn. ...