Abstract
What does it mean to respect life and health in an innocent fellow-human being? Separating conjoined twins where one twin will die as a result need not involve the intention to kill or harm. Arguably, however, not all side-effects are “mere” side-effects which could, in principle, be outweighed by sufficiently good intended effects. Rather, foreseen serious harm for an innocent person we non-therapeutically affect can be morally conclusive when linked to the intention to affect the person’s body or invade the space it fills. In the case of infant conjoined twins, such as the Maltese twins Jodie and Mary, the twin who dies from separation has no unjust, or any, intentions as regards the twin saved. She thus has the moral immunity of any innocent person from lethal bodily invasions and other serious bodily harm. Neither the final act which killed Mary nor previous acts of cutting into Mary, including parts shared with her twin Jodie, were therefore morally permissible.
