Abortion is the termination of a pregnancy by removal or expulsion of an embryo or fetus. An abortion that occurs without intervention is known as a miscarriage or "spontaneous abortion"; these occur in approximately 30% to 40% of all pregnancies. When deliberate steps are taken to end a pregnancy, it is called an induced abortion, or less frequently "induced miscarriage". The unmodified word abortion generally refers to an induced abortion. The most common reasons given for having an abortion are for birth-timing and limiting family size. Other reasons reported include maternal health, an inability to afford a child, domestic violence, lack of support, feeling they are too young, wishing to complete education or advance a career, and not being able or willing to raise a child conceived as a result of rape or incest.
Calendar-based methods are various methods of estimating a woman's likelihood of fertility, based on a record of the length of previous menstrual cycles. Various methods are known as the Knaus–Ogino method and the rhythm method. The standard days method is also considered a calendar-based method, because when using it, a woman tracks the days of her menstrual cycle without observing her physical fertility signs. The standard days method is based on a fixed formula taking into consideration the timing of ovulation, the functional life of the sperm and the ovum, and the resulting likelihood of pregnancy on particular days of the menstrual cycle. These methods may be used to achieve pregnancy by timing unprotected intercourse for days identified as fertile, or to avoid pregnancy by avoiding unprotected intercourse during fertile days.
Myristicin is a naturally occurring compound found in common herbs and spices, such as nutmeg. It is an insecticide, and has been shown to enhance the effectiveness of other insecticides.
Misoprostol is a synthetic prostaglandin medication used to prevent and treat stomach and duodenal ulcers, induce labor, cause an abortion, and treat postpartum bleeding due to poor contraction of the uterus. It is taken by mouth when used to prevent gastric ulcers in people taking nonsteroidal anti-inflammatory drugs (NSAID). For abortions it is used by itself or in conjunction with mifepristone or methotrexate. By itself, effectiveness for abortion is between 66% and 90%. For labor induction or abortion, it is taken by mouth, dissolved in the mouth, or placed in the vagina. For postpartum bleeding it may also be used rectally.
Vacuum or suction aspiration is a procedure that uses a vacuum source to remove an embryo or fetus through the cervix. The procedure is performed to induce abortion, as a treatment for incomplete spontaneous abortion or retained fetal and placental tissue, or to obtain a sample of uterine lining. It is generally safe, and serious complications rarely occur.
Dilation and evacuation (D&E) or dilatation and evacuation is the dilation of the cervix and surgical evacuation of the uterus after the first trimester of pregnancy. It is a method of abortion as well as a common procedure used after miscarriage to remove all pregnancy tissue.
A self-induced abortion is an abortion performed by the pregnant woman herself, or with the help of other, non-medical assistance. Although the term includes abortions induced outside of a clinical setting with legal, sometimes over-the-counter medication, it also refers to efforts to terminate a pregnancy through alternative, potentially more dangerous methods. Such practices may present a threat to the health of women.
An unsafe abortion is the termination of a pregnancy by people lacking the necessary skills, or in an environment lacking minimal medical standards, or both. An unsafe abortion is a life-threatening procedure. It includes self-induced abortions, abortions in unhygienic conditions, and abortions performed by a medical practitioner who does not provide appropriate post-abortion attention. About 25 million unsafe abortions occur a year, of which most occur in the developing world.
Male contraceptives, also known as male birth control, are methods of preventing pregnancy by interrupting the function of sperm. The main forms of male contraception available today are condoms, vasectomy, and withdrawal, which together represented 20% of global contraceptive use in 2019. New forms of male contraception are in clinical and preclinical stages of research and development, but as of 2024, none have reached regulatory approval for widespread use.
Apiole is a phenylpropene, also known as apiol, parsley apiol, or parsley camphor. Its chemical name is 1-allyl-2,5-dimethoxy-3,4-methylenedioxybenzene. It is found in the essential oils of celery leaf and all parts of parsley. Heinrich Christoph Link, an apothecary in Leipzig, discovered the substance in 1715 as greenish crystals reduced by steam from oil of parsley. In 1855 Joret and Homolle discovered that apiol was an effective treatment of amenorrea or lack of menstruation.
Instillation abortion is a rarely used method of late-term abortion, performed by injecting a solution into the uterus.
Menstrual extraction (ME) is a type of manual vacuum aspiration technique developed by feminist activists Lorraine Rothman and Carol Downer to pass the entire menses at once. The non-medicalized technique has been used in small feminist self-help groups since 1971 and has a social role of allowing access to early abortion without needing medical assistance or legal approval. ME usage declined after 1973, when Roe v. Wade legalized abortion in the United States. There has been renewed interest in the technique, in the 1990s and more recently in the 2010s, due to increased restrictions on abortion. In some countries where abortion is illegal, such as Bangladesh, the terms "menstrual regulation" or "menstrual extraction" are used as euphemisms for early pregnancy terminations.
Tricresyl phosphate (TCP), is a mixture of three isomeric organophosphate compounds most notably used as a flame retardant. Other uses include as a plasticizer in manufacturing for lacquers and varnishes and vinyl plastics and as an antiwear additive in lubricants. Pure tricresyl phosphate is a colourless, viscous liquid, although commercial samples are typically yellow. It is virtually insoluble in water, but easily soluble in organic solvents like toluene, hexane, and diethyl ether among others. It was synthesized by Alexander Williamson in 1854 upon reacting phosphorus pentachloride with cresol, though today's manufacturers can prepare TCP by mixing cresol with phosphorus oxychloride or phosphoric acid as well. TCP, especially the all-ortho isomer, is the causative agent in a number of acute poisonings. Its chronic toxicity is also of concern. The ortho-isomer is rarely used on its own outside of laboratory studies that require isomeric purity, due to its extremely toxic nature, and is generally excluded from commercial products where TCP is involved.
Unintended pregnancies are pregnancies that are mistimed or unwanted at the time of conception, also known as unplanned pregnancies.
Transgender pregnancy is the gestation of one or more embryos or fetuses by transgender people. As of 2024, the possibility is restricted to those born with female reproductive systems. However, transition-related treatments may impact fertility. Transgender men and nonbinary people who are or wish to become pregnant face social, medical, legal, and psychological concerns. As uterus transplantations are currently experimental, and none have successfully been performed on trans women, they cannot become pregnant.
A medical abortion, also known as medication abortion or non-surgical abortion, occurs when drugs (medication) are used to bring about an abortion. Medical abortions are an alternative to surgical abortions such as vacuum aspiration or dilation and curettage. Medical abortions are more common than surgical abortions in most places around the world.
Abortion is illegal in Bangladesh under most situations, but menstrual regulation is often used as a substitute. Bangladesh is still governed by the penal code from 1860, where induced abortion is illegal unless the woman is in danger.
Abortion is a controversial topic in Nigeria. Abortion in Nigeria is governed by the two laws that differs greatly depending on geographical location. Northern Nigeria is governed by The Penal Code and Southern Nigeria is governed by The Criminal Code. The only legal way to have an abortion in Nigeria is if having the child is going to put the mother's life in danger. However, sex-selective abortion has long had acceptance in Nigeria.
Abortion in Kenya is prohibited with the exception of certain circumstances including danger to the life and health of the expectant mother, and rape. Unsafe abortions are a major cause of deaths and health complications for women in Kenya.
In Gabon, abortion is only legal in the cases of risk to the mother's life, risk of birth defects, pregnancy from rape or incest, or if the mother is a minor in distress, up to ten weeks of pregnancy. Illegal abortions are punishable by prison or fines. Gabon has one of the highest rates of abortion in Sub-Saharan Africa.
