Article 40.3.3 of the Constitution
The State acknowledges the right to life of the unborn and, with due regard to the equal right to life of the mother, guarantees in its laws to respect, and, as far as practicable, by its laws to defend and vindicate that right.
This Article was interpreted by the Supreme Court in its judgment in the X case in March, 1992. It ruled that abortion is permissible in the State where the continuation of the pregnancy poses a real and substantial risk to the life, as opposed to the health, of the mother and where such a risk could not be averted except by means of an abortion. A substantial risk to the life of the mother included a risk of suicide.