The Pope made the remarks on the first day of his visit to France, where he celebrated Mass at the Notre-Dame Cathedral, which was rebuilt following the 2019 fire.
His comments came shortly after France introduced legislation allowing patients to request assistance to die under certain circumstances, including when they are experiencing severe suffering or other serious conditions.
Pope Leo XIV said the Catholic Church considers life a fundamental right that should not be taken away from a person.
He also addressed issues including genetic modification, surrogacy and the commercialisation of human organs, stressing that human wisdom must guide scientific knowledge so that it remains focused on the common good.
“Sometimes I am concerned about these changes emerging in society, which could turn science and technology into activities driven solely by financial interests, promoting genetic modification, surrogacy, the commercialisation of human organs or enabling a person to arrange the means to end their own life.”
Pope Leo XIV also called on the world to reconsider the development of artificial intelligence, warning that in the future, AI could become powerful enough to control the world.
