Contraception is determined as any act that alters the nature of intercourse with the intent of rendering procreation impossible. This definition is very lose, it leaves room for various methods to be considered wrong. The Catholic Church finds contraception as everything physical that could prevent the birth of a child such as condoms, the Pill or Intra-Uterine Device. The Church does not view natural family planning as a course of contraception, for it doesn't use anything besides a woman's natural cycle. The Catholic Church identifies all forms of contraceptives as barricades that do not complete the marriage of a man and a woman.

There various methods of contraceptives that have produce a very low failure rate. The most simplified, common form of a contraceptive is the condom, a mere barrier that prevents the sperm from meeting the egg. There are also medicinal methods of contraception. For the male, there are spermicides, which as the name would portray, kills the sperm. For a female, there is a birth control pill, synonymous with the "Pill." Birth control hormonally tricks the body into thinking it is pregnant, thus ovulation is prevented. If an egg is released and fertilized, it is not allowed to implant or an early stage abortion occurs. Intra-Uterine devices are small flexible devices made of metal and/or plastic that prevent pregnancy when inserted into a woman's uterus through her vagina. They are only early stage abortifacients that do not allow implantation. Over the years, there have been more developments in various methods of contraception as society has found contraceptives more acceptable.