One Body or Two?

When someone says “my body, my choice,” she might mean one of a few things. She might be saying that a fetus is a part of the mother’s body, like a kidney. In this case, the core disagreement is about biology. On the other hand, she might agree that the fetus is a distinct human person. She might instead be saying that it is justified to kill a person who is inside her body or a person who is using her body for life support. In this case, the core disagreement is about ethics.