CATECHISM OF THE CATHOLIC CHURCH
SECOND EDITION

Paragraphs 2322–2326

2322 From its conception, the child has the right to life. Direct abortion, that is, abortion willed as an end or as a means, is a "criminal" practice (GS 27 § 3), gravely contrary to the moral law. The Church imposes the canonical penalty of excommunication for this crime against human life.
2323 Because it should be treated as a person from conception, the embryo must be defended in its integrity, cared for, and healed like every other human being.
2324 Intentional euthanasia, whatever its forms or motives, is murder. It is gravely contrary to the dignity of the human person and to the respect due to the living God, his Creator.
2325 Suicide is seriously contrary to justice, hope, and charity. It is forbidden by the fifth commandment.
2326 Scandal is a grave offense when by deed or omission it deliberately leads others to sin gravely.