Actually, I studied Bio Science for one year for Advance Level. Then the teacher who teaches us bio, when he was teaching us about living body systems, when he was teaching us about human blood circulation system, he told us "garlic can remove 19% of the lead accumulated in the blood of people who work with car batteries".
In addition, when the teacher told us about this, he mentioned that he discovered this in an experiment done by a group of students in a certain university.