For many people starting their surrogacy journey, the idea of twins can sound appealing. After all, two babies at once might seem like a quicker path to growing a family. But in modern fertility care, twin pregnancies through surrogacy are actually much less common than people expect.
Today, fertility specialists and surrogacy professionals prioritize safe, healthy pregnancies, which usually means aiming for one baby at a time. If you’re an intended parent or a potential surrogate just beginning to explore the process, here’s a simple overview of why twins are uncommon in surrogacy and what risks they can involve.
Why Twins Used to Be More Common in IVF
Years ago, fertility clinics often transferred multiple embryos during IVF to increase the chance that at least one would implant. This practice did sometimes lead to twins (or even more).
But as IVF technology has improved, success rates with single embryo transfers have increased significantly. Because of this, most clinics now recommend transferring just one embryo at a time, especially in surrogacy arrangements.
This approach helps reduce health risks for both the surrogate and the baby.
Why Surrogacy Usually Involves One Embryo Transfer
Most fertility clinics follow guidelines from organizations like the American Society for Reproductive Medicine (ASRM), which encourage single embryo transfers whenever possible.
In surrogacy, this is especially important because the surrogate is carrying a pregnancy for someone else. Clinics and agencies aim to minimize medical risks and ensure the safest experience for everyone involved.
As a result, the majority of surrogacy pregnancies today involve one embryo and one baby.
Can Twins Still Happen in Surrogacy?
Yes, twins can still happen, but they are relatively uncommon.
Twin pregnancies in surrogacy usually occur in one of two ways:
- Two embryos are transferred, and both implant.
- One embryo splits, resulting in identical twins (this is rare but possible).
Even when two embryos are transferred, there is no guarantee both will implant. Because of the added risks of twin pregnancies, many clinics prefer to avoid transferring multiple embryos unless there is a specific medical reason.
The Risks of Twin Pregnancies
While twins can be joyful, they also come with higher medical risks compared to singleton pregnancies.
Risks for the Surrogate
Carrying twins can place more strain on the surrogate’s body. Potential risks include:
- Higher chance of preterm labor
- Increased risk of gestational diabetes
- Greater likelihood of preeclampsia
- More physical discomfort and pregnancy complications
- Increased chance of C-section delivery
Because surrogates are carefully screened and supported throughout pregnancy, reducing these risks is a top priority.
Risks for the Babies
Twin pregnancies also carry additional risks for the babies, including:
- Premature birth
- Low birth weight
- Higher likelihood of NICU stays
- Increased chance of developmental complications related to prematurity
For intended parents who have often waited years to build their family, fertility clinics work hard to create the safest possible outcome.
Why “One Healthy Baby” Is the Goal
In today’s fertility world, the goal is simple: one healthy baby and one healthy pregnancy.
Single embryo transfers help:
- Protect the surrogate’s health
- Reduce complications during pregnancy
- Improve outcomes for the baby
- Create a smoother surrogacy experience overall
While twins may seem like a bonus, medical experts generally consider a singleton pregnancy the safest and most predictable path.
What Intended Parents and Surrogates Should Know
If you’re starting your surrogacy journey, it’s helpful to keep a few things in mind:
- Twins are possible, but not typically the goal of modern IVF
- Most clinics recommend single embryo transfer for safety
- Your fertility doctor will guide decisions based on medical best practices
- Every surrogacy journey is unique, but safety is always the priority
Surrogacy is already an incredible act of teamwork between intended parents, surrogates, doctors, and agencies. By focusing on the healthiest pregnancy possible, everyone involved can feel confident moving forward.
Final Thoughts
While twins in surrogacy can sound exciting, they also come with higher medical risks for both the surrogate and the babies. Because of this, most fertility clinics today focus on one embryo transfer and one healthy pregnancy at a time. This approach helps protect the surrogate’s health and improves outcomes for everyone involved.
If you’re just beginning your surrogacy journey, it’s completely normal to have questions about twins, embryo transfers, and what to expect throughout the process. Talking through these topics early can help set clear expectations and make you feel more confident moving forward.
Agencies, like Family Choice Surrogacy, can be a great resource during this stage. Many intended parents and surrogates find it helpful to have open conversations with their agency about twins, clinic recommendations, and any concerns they may have before starting their journey. Agencies work closely with fertility clinics and can help guide you through these discussions so you feel informed, supported, and prepared every step of the way.
At the end of the day, the goal is the same for everyone involved: a safe pregnancy, a healthy baby, and a positive surrogacy experience for all parties involved.