Is cooking in an iron pan harmful to your health?

Is cooking in an iron pan harmful to human body? I think frying in an iron pan is not harmful to the body, but beneficial to the balance of the human body. Because if you cook with apples, it will increase the elements in your body. Because if you fire me, I'll burn it in a wok. First, I stir-fry iron in an iron pan. Eventually, it will penetrate into the human body and be absorbed by people. So, in the final analysis, it's people. The United Nations also published an article, that is to say, it is necessary to learn that iron pots in China can supplement iron in the human body. So it is definitely beneficial to the human body in the process.