A gestational parent is the person who carries and gives birth to a child. This may or may not be the same person who contributed the egg or sperm that created the embryo. Until assisted reproduction became common, the distinction didn’t matter much because the person carrying the pregnancy was almost always one of the child’s genetic parents. Today, these roles can be separated entirely, which is why the term exists.
Gestational vs. Genetic Parent
There are two distinct ways to be a biological parent. A genetic parent contributes the egg or sperm, providing the DNA that shapes the child’s inherited traits. A gestational parent contributes the biological environment: the uterus, the blood supply, the nutrients, and the hormonal signals that co-determine all of the child’s physical features during development. Both roles are biological, but they involve fundamentally different contributions.
For most of human history, the gestational parent was always one of the two genetic parents, so there was no reason to draw this line. IVF and embryo transfer changed that. A person can now carry a pregnancy using an embryo created entirely from other people’s eggs and sperm, making them a gestational parent with no genetic connection to the child at all.
Why Healthcare Uses This Term
The American Society for Reproductive Medicine defines a gestational carrier as “a person who carries a pregnancy resulting from the transfer of a preimplantation embryo created by one or more genetic parents or gamete donors.” In fertility medicine, “gestational carrier” and “gestational parent” are standard vocabulary.
The term also serves a broader purpose in obstetric care. Most people who carry pregnancies are cisgender women, but transgender men and nonbinary people with uteruses can and do become pregnant. Research published in the journal Birth found that when providers used incorrect terms like “she” or “mom” with transgender patients, it intensified gender-related psychological distress. “Gestational parent” offers a precise, neutral way to describe the person receiving prenatal care without making assumptions about their gender identity. It names a specific biological role rather than assigning a social one.
Gestational Surrogacy vs. Traditional Surrogacy
The distinction between gestational and genetic parentage shows up clearly in the two types of surrogacy practiced in the United States. In gestational surrogacy, the carrier becomes pregnant through embryo transfer using eggs and sperm from other people. The carrier has no genetic relationship to the child. In traditional surrogacy, the carrier uses her own egg, making her both the gestational and the genetic parent of the child. Traditional surrogates typically become pregnant through artificial insemination rather than IVF.
Gestational surrogacy has become far more common. CDC data tracking assisted reproductive technology cycles from 1999 to 2013 show that gestational carrier cycles grew from 727 in 1999 to 3,432 in 2013, rising from 1.0% to 2.5% of all ART cycles performed. The legal and emotional landscape is simpler when the carrier has no genetic tie to the baby, which partly explains the shift.
What the Gestational Parent Does Physically
Carrying a pregnancy is a significant physiological undertaking regardless of genetic connection. The gestational parent’s body builds and maintains the placenta, regulates hormone levels, delivers oxygen and nutrients to the fetus, and removes waste. During the first trimester, when the embryo’s organs are forming (roughly weeks 3 through 8), the gestational parent’s environment is especially critical. Exposure to harmful substances during this narrow window poses the greatest risk to development.
Nutritional demands increase as the pregnancy progresses. The first trimester requires no additional calories for someone at a normal weight, but the second trimester calls for about 300 extra calories per day, and the third trimester about 400. By 28 weeks, the growing uterus presses on major blood vessels, which is why sleeping on one’s side rather than flat on the back becomes important. Physical demands also increase: lifting more than 25 pounds is generally discouraged after 28 weeks.
Legal Parentage Varies by State
Who counts as the legal parent of a child born through surrogacy depends heavily on where you live. There is no federal surrogacy law in the United States, so rules vary dramatically from state to state.
- Illinois is the most straightforward: under a valid gestational surrogacy agreement, the intended parents become legal parents immediately at birth. Illinois is the only state that allows parentage to be established even before the child is born.
- Arizona sits at the opposite end. It prohibits all surrogacy contracts, declares the surrogate the legal mother, and presumes her husband (if she has one) is the legal father.
- Florida permits gestational surrogacy but requires the surrogate to agree to relinquish parental rights at birth, and at least one intended parent must be genetically related to the child.
- Virginia requires court pre-authorization of the surrogacy contract. If the contract is later voided, the surrogate and her spouse become the legal parents, and the intended parents can only gain rights through adoption.
- North Dakota recognizes the intended parents as legal parents when both contributed genetic material to the embryo.
In states with unclear or restrictive laws, intended parents sometimes need to go through a formal adoption process to secure their legal relationship to a child they are genetically related to. The gestational parent’s legal status as a parent, even temporarily, can depend entirely on which state the birth takes place in.
Bonding and Lactation After Birth
One question that comes up in surrogacy arrangements is whether the intended parent (rather than the gestational carrier) can breastfeed the baby. Induced lactation is possible through a combination of hormonal preparation and breast stimulation, but research reviews consistently find that most people who induce lactation cannot produce enough milk to exclusively breastfeed. Despite this, studies report that the bonding experience itself is the primary source of satisfaction for parents who try it, outweighing the frustration of low supply.
For the gestational parent, the postpartum period involves the same physical recovery as any birth: uterine contraction, hormonal shifts, and potential complications like bleeding or infection. This is true whether the pregnancy involved the carrier’s own genetic material or not. The body doesn’t distinguish between a genetically related pregnancy and a carried one when it comes to recovery.