Although lead has some benefit to the animal body from the angle of health science and nutriology,some reported papers showed that lead and cadmium still had toxicious function to the human body.

• 从健康学、营养学的角度看，铅对动物体有某些益处。但迄今为止，文献报道仍然是肯定铅、镉对人体的毒性作用。