“Are IVF babies healthy as they grow up?” There are many claims about the long-term effects of IVF on children, from differences in intelligence to health risks to effects on the mother. But which of these are supported by evidence, and which are long-standing misconceptions?
This article draws on large international studies, Taiwan’s current regulations on assisted reproduction, and the clinical experience of Taipei Fertility Center (TFC) to help you understand what is known about the long-term health of children born through IVF, the effects on the mother, and how the technology has advanced. Our goal is to give you a clearer and more reliable basis for your decision before you begin treatment.
Are IVF Babies Healthy? 4 Common Myths Explained
When considering IVF, many families worry most about whether their child will be more fragile or whether their intelligence could be affected. These concerns largely stem from observations made when the technology was first introduced, and medicine has advanced considerably since then. Here are 4 common myths, along with what the evidence shows.
Myth 1: IVF babies are more likely to have birth defects
Many people worry that embryos handled in a laboratory are more likely to develop abnormalities. Statistically, the overall rate of congenital anomalies in IVF babies is slightly higher, but the difference is small. It is mainly linked to infertility itself and to parental age, rather than being directly caused by IVF technology. In other words, IVF babies also go through fertilization and implantation in the uterus, and the biological process of their development is essentially the same as in natural conception.
Myth 2: IVF babies have lower IQ and fall behind in cognitive development
“Will IVF babies be less intelligent?” is a question we often hear in the clinic. Studies show no significant differences between children born through IVF and naturally conceived children in language skills, academic performance or cognitive tests. In fact, because families tend to prepare thoroughly before treatment, children may grow up in a more stable environment, which can have a positive influence on their development.
Myth 3: IVF pregnancies are more likely to end in miscarriage or preterm birth
The risks of miscarriage and preterm birth are mainly related to the mother’s age, the uterine environment and the condition of the placenta, rather than IVF treatment itself. The key factor affecting preterm birth rates is often multiple pregnancy. To lower this risk, single embryo transfer is now widely used in clinical practice, so that pregnancy can proceed under safer conditions for both mother and baby.
Myth 4: IVF always puts the mother and baby at risk
Every medical procedure carries some risk, and IVF is no exception. Women who conceive through IVF have a slightly higher rate of complications such as gestational hypertension, cesarean delivery and acute kidney injury than those who conceive naturally. However, these differences are mostly related to the underlying infertility, age and multiple pregnancy, rather than the technology itself. With a thorough pre-pregnancy evaluation, medication adjustments and regular prenatal checkups, most of these risks can be well managed.
What Does the Research Say? Long-Term Health Outcomes of IVF Babies
Since the birth of the world’s first IVF baby in 1978, nearly half a century of follow-up data has accumulated. Several large cohort studies abroad have also systematically compared IVF-conceived children with naturally conceived children as they grow up, and their findings offer an important reference point.
Among them, the Growing Up Healthy Study (GUHS) and the Raine Study, both based at the University of Western Australia, are representative cohort databases that have followed people born through assisted reproduction for more than 20 years. Their findings show the following:
- Height and growth: Weight and height curves in infancy and early childhood show no significant differences from those of naturally conceived children.
- Intelligence and academic performance: Most studies show similar cognitive ability and language development, with no clear gaps.
- Behavior and emotions: Some studies observed a slightly higher rate of internalizing emotional problems, such as anxiety and low mood, among assisted-reproduction offspring at age 14. By age 17, however, these differences mostly faded.
- Immune health and chronic disease: To date, long-term follow-up data have not found clear differences from the naturally conceived population in the rates of chronic or autoimmune diseases.
These findings are also consistent with the positions of leading international professional organizations. The American Society for Reproductive Medicine (ASRM), the European Society of Human Reproduction and Embryology (ESHRE), and Taiwan’s Health Promotion Administration under the Ministry of Health and Welfare all state that the overall health of IVF babies is comparable to that of naturally conceived babies.
In its educational materials on 5 myths about IVF babies, the Health Promotion Administration also states clearly that IVF babies show no significant differences in intelligence, health or growth. In other words, common claims that IVF babies are “weaker,” “less intelligent” or “more likely to get sick” are misconceptions with no evidence to support them.
Read more:
What Is IVF? A Complete Guide to IVF Success Rates, Process, Costs and Subsidies
IVF Success Stories and Real-Life Experiences
With years of clinical experience, Taipei Fertility Center (TFC) has helped many families welcome their IVF babies. One mother, who became pregnant through IVF at age 38, shared that her child is now 8 years old. He takes piano lessons and plays soccer with his classmates, and he still begs to watch cartoons. His health checkups and cognitive assessments have all been normal, and he is hard to tell apart from other children. Stories like this are not uncommon in our follow-up records, and many families who were told their chances of conceiving naturally were low have gone on to welcome a child.
Looking at long-term observations, what shapes a child’s development is not how they were conceived, but is more closely tied to family support and the quality of parenting. As modern IVF treatment has adopted a number of precision technologies, there are now clearer ways to manage overall risk. Common ones include:
- Time-lapse incubators: These allow continuous observation of embryo development during culture, without the need to remove embryos frequently for checks. This helps maintain a stable culture environment and may help in selecting embryos with better development.
- PGT-A (preimplantation genetic testing for aneuploidy): This is used to check whether an embryo has the normal number of chromosomes, and may help lower the risk of miscarriage and chromosomal abnormalities.
- Vitrification (ultra-rapid freezing): This allows extra good-quality embryos to be stored safely. Survival rates after thawing are generally above 90% for both eggs and embryos.
- Single embryo transfer: Transferring one selected embryo at a time may help reduce the risks of preterm birth and low birth weight associated with multiple pregnancy.
Every family’s situation is different, and the right treatment plan varies from person to person. If you have any questions about IVF or related technologies, feel free to contact the TFC team, and our physicians can offer a full evaluation and recommendations based on your individual circumstances.
IVF Myths Q&A: Your Questions Answered
Q: Are IVF babies less healthy?
According to large international studies and data from Taiwan’s Health Promotion Administration under the Ministry of Health and Welfare, IVF babies show limited differences from naturally conceived children in intelligence, growth and overall health. Where risks are somewhat higher, they are mostly related to parental age, the cause of infertility or multiple pregnancy, rather than IVF technology itself. With pre-pregnancy evaluation, chromosomal screening and single embryo transfer, these risks can be well managed.
Q: Are IVF babies smarter?
No study has confirmed that IVF babies are smarter, and there is no evidence that they are less intelligent either. Intelligence and cognitive development are shaped by genetics, home environment, education and nutrition, and the way a child was conceived has limited influence. Stable support and appropriate parenting matter far more.
Q: Is IVF hard on the body? Does it increase the risk of cancer?
Most meta-analyses have not found that IVF treatment significantly increases the risk of breast, ovarian or endometrial cancer. Ovulation-stimulating medications are used for a short period, and the dose is adjusted according to how the ovaries respond, so they do not build up over the long term. If you feel unwell after treatment, we recommend returning for regular follow-up visits.
Q: Do you have to be married to do IVF?
Under Taiwan’s current Assisted Reproduction Act, treatment is available only to married couples with infertility, so a legal marriage is still required. A draft amendment was approved in December 2025 that would include female same-sex couples and single women, but as of April 2026 it was still under review in the Legislative Yuan and had not passed its third reading. If you are unmarried, you may wish to consider egg freezing first to keep your fertility options open.
Q: Can you choose your baby’s sex through IVF?
Under Article 16 of the Assisted Reproduction Act, sex selection for non-medical reasons is prohibited. Testing through PGT-M or PGT-A is permitted only in specific cases involving genetic disease, and must be evaluated by a specialist physician. Any claim that sex selection can be done legally does not comply with current regulations.
How Can Taipei Fertility Center Help with Concerns About IVF Babies’ Long-Term Health?
If you’re hesitating about starting treatment, concerns about the long-term effects of IVF on children are, for the most part, exaggerated. What matters most is choosing an experienced fertility center with rigorous procedures. Taipei Fertility Center (TFC) was founded by Dr. Chii-Ruey Tzeng and brings together a team of senior reproductive medicine specialists. Our center offers a full embryology laboratory, PGT-A chromosomal screening, time-lapse imaging systems and a single embryo transfer approach, all of which help keep the overall risks of pregnancy and the postpartum period within a reasonable range for each family.
Whether you are preparing to conceive, want to understand how the IVF process works, or would like to start with an ovarian reserve or sperm assessment, we welcome you to book a consultation with TFC. With the support of our professional team, you can evaluate your situation with greater peace of mind and build a more stable foundation of health for your future little one.
