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Surrogacy

Surrogacy is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Surrogacy rather than just read about it. In short: Surrogacy is an arrangement whereby a woman gets pregnant and gives birth on behalf of another person or couple who will become the child's legal parents after birth. People pursue surrogacy for a variety of reasons such as infertility, dangers or undesirable factors of pregnancy, or when pregnancy is a medical impossibility.

Surrogacy — main illustration
Surrogacy — illustration

Key takeaways

  • Surrogacy belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Surrogacy to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Surrogacy from memory before moving on to harder problems.

Reference excerpt

Surrogacy is an arrangement whereby a woman gets pregnant and gives birth on behalf of another person or couple who will become the child's legal parents after birth. People pursue surrogacy for a variety of reasons such as infertility, dangers or undesirable factors of pregnancy, or when pregnancy is a medical impossibility. A surrogacy relationship or legal agreement contains the person who carries the pregnancy and gives birth and the person or persons who take custody of the child after birth. The person giving birth is the gestational carrier, sometimes referred to as the birth mother, surrogate mother or surrogate. Those taking custody are called the commissioning or intended parents. The biological mother may be the surrogate, the intended parent, or neither. Gestational carriers are usually introduced to intended parents through third-party agencies, or other matching channels. They are usually required to participate in processes of insemination (no matter traditional or IVF), pregnancy, and delivery. In surrogacy arrangements, monetary compensation may or may not be involved. Receiving money for the arrangement is known as commercial surrogacy, a practice legally regulated or banned in many countries. The legality and cost of surrogacy varies widely between jurisdictions, contributing to fertility tourism, and sometimes resulting in problematic international or interstate surrogacy arrangements. For example, those living in a country where surrogacy is banned travel to a jurisdiction that permits it. In some countries, surrogacy is legal if there is no financial gain. Where commercial surrogacy is legal, third-party agencies may assist by finding a surrogate and arranging a surrogacy contract with her. These agencies often obtain medical tests to ensure healthy gestation and delivery. They also usually facilitate legal matters concerning the intended parents and the gestational carrier.

Methods Surrogacy refers to an arrangement where a woman carries a child for intended parents. In some cases, it is specified as traditional surrogacy, where the gestational carrier's own egg is used. More commonly, surrogacy is when the egg comes from someone other than the gestational carrier, making the legal and emotional boundaries clearer.

Surrogacy Surrogacy (also known as host or full surrogacy) was first achieved in April 1986. It takes place when an embryo created by in vitro fertilization (IVF) technology is transferred to a gestational carrier. Surrogacy has several forms, and in each form, the resulting child is genetically unrelated to the surrogate:

The embryo is created using the intended father's sperm and the intended mother's eggs; The embryo is created using the intended father's sperm and a donor egg; The embryo is created using the intended mother's egg and donor sperm; A donor embryo is transferred to a gestational carrier. Such an embryo may be available when others undergoing IVF have embryos left over, which they donate to others. The resulting child is genetically unrelated to the gestational carrier and the intended parents.

Traditional surrogacy A traditional surrogacy (also known as partial, natural, or straight surrogacy) is one where the gestational carrier's egg is fertilised by the intended father's or a donor's sperm. Insemination of the gestational carrier can be either through sex (natural insemination) or artificial insemination. Using the sperm of a donor results in a child who is not genetically related to the intended parents. If the intended father's sperm is used in the insemination, the resulting child is genetically related to both him and the gestational carrier.

Risks

Embryo The embryo transferred to the gestational carrier faces the same risks as any embryo transferred through IVF. Pre-transfer risks of the embryo include unintentional epigenetic effects, influence of media which the embryo is cultured on, and undesirable consequences of invasive manipulation of the embryo. Often, multiple embryos are transferred to increase the chance of success, and if multiple gestations occur, both the gestational carrier and the embryos face higher risks of complications. Children born through singleton IVF surrogacy have been shown to have no physical or mental abnormalities compared to those children born through natural conception. However, children born through multiple gestation by gestational carriers often result in preterm labor and delivery, resulting in prematurity and physical or mental anomalies.

Gestational carriers Overall, the medical risks for the gestational carrier, such as pre-eclampsia, are higher than if she were carrying her own genetically related baby. Research showing that gestational carriers have a smaller chance of medical complications such as hypertensive disorder during pregnancy compared to mothers pregnant by oocyte donation are usually comparing younger, healthier, fertile gestational carriers against older, less healthy, infertile women using assisted reproductive technology. About 5% of surrogate pregnancies develop placenta previa or placental abruptions, which can cause dangerous complications for both the gestational carrier and the baby. In some countries, such as China, there exists a gap in the legal framework between the legislation and regulation for surrogacy. There can be an increase in the safety risks of artificial surgeries such as egg retrieval and insemination. Moreover, any underground contracts can inflict serious psychological harm on gestational carriers. Surrogacy agencies have ignored gestational carriers health risks which has led to death and have enforced foetal sex selection through abortions. Multiple embryo transfers and foetal reduction procedures may also be repeated on the same gestational carrier, causing health hazards such as miscarriage, infertility, and even death.

… excerpt ends here. Continue reading the full article.

Illustrations

Surrogacy: Intended parents attend the birth of their child by a gestational surrogate.
Intended parents attend the birth of their child by a gestational surrogate.
Surrogacy: Harinegameshin Transfers Mahavira's Embryo, from a  Kalpasutra manuscript, c. 1300–1350, Philadelphia Museum of Art
Harinegameshin Transfers Mahavira's Embryo, from a Kalpasutra manuscript, c. 1300–1350, Philadelphia Museum of Art

Worked examples

Example 1 — a first encounter with Surrogacy

Start with the simplest possible case. Write down what Surrogacy claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Surrogacy before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Surrogacy ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Surrogacy

In research
Surrogacy appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Surrogacy in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Surrogacy is common in secondary-school and first-year university syllabi. It links to neighbouring topics Bioethics, Gendered occupations, Human commodity, so understanding it makes those chapters shorter.
In everyday life
Look for Surrogacy outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Surrogacy in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Surrogacy means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Surrogacy out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Surrogacy in simple terms?

Surrogacy is an arrangement whereby a woman gets pregnant and gives birth on behalf of another person or couple who will become the child's legal parents after birth. People pursue surrogacy for a variety of reasons such as infertility, dangers or undesirable factors of pregnancy, or when pregnancy…

Why does Surrogacy matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Surrogacy?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Surrogacy.

Tags

  • Bioethics
  • Gendered occupations
  • Human commodity
  • Human pregnancy
  • Obstetrics
  • Surrogacy

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