Non-hormonal methods of contraception
Fertility can be controlled without hormones.
These methods include:
- physical barrier methods such as condoms and diaphragms, which prevent the sperm reaching an egg
- intrauterine devices (IUD) also known as a coil, prevent the implantation of an embryo or release of a hormone
- spermicidal agents which kill or disable sperm
- abstaining from intercourse when an egg may be in the oviduct
- surgical methods of male and female sterilisation - an example is a vasectomy, where the sperm ducts are cut and tied
Benefits and risks
- condoms are easy and quick to use, but sometimes they can tear or rip
- diaphragms need to be put in just before sex and left in several hours afterwards
- IUDs need to be fitted by a health professional - IUD can remain in position for up to 10 years, however there is a small risk of causing an ectopic pregnancy
- spermicidal agents can be added to other physical barriers such as condoms, but some people can have allergic reactions to these
- abstaining can be used successfully, but if the timings are not accurate the chance of pregnancy is high
- surgical methods cannot be reversed, and is considered permanent