IVF is not bad. It is a safe, well-studied medical procedure, and most babies born through it are healthy. The American Society for Reproductive Medicine describes its safety as “extensively studied and affirmed.” That said, IVF does carry real risks, both physical and emotional, that are worth understanding before you start. Here’s what the evidence actually shows.
Overall Safety Profile
The baseline rate of birth defects in the general population is 2% to 3%. For people with fertility problems, that rate is slightly higher regardless of whether they use IVF or conceive on their own. This is an important distinction: infertility itself is linked to higher rates of obstetric complications and congenital differences, so some of the risk people associate with IVF actually comes from the underlying fertility condition.
IVF is also highly regulated. Clinics track outcomes, report data to national registries, and follow protocols shaped by decades of research. Over 12 million babies have been born through assisted reproduction worldwide since the first IVF birth in 1978.
Risks During the IVF Process
The most talked-about short-term risk is ovarian hyperstimulation syndrome (OHSS), a reaction to the hormone medications used to stimulate your ovaries. Mild symptoms like bloating and discomfort are common, but moderate OHSS occurs in about 3% to 6% of all cycles. The severe form, which can cause fluid buildup in the abdomen and occasionally requires hospitalization, affects 0.1% to 3% of cycles. For women considered high-risk (typically those with polycystic ovary syndrome or very high egg counts), the chance of developing some form of OHSS can reach 20%. Modern protocols have significantly reduced this risk. Clinics now use different trigger medications and adjust hormone doses based on how your body responds.
The egg retrieval itself is a minor surgical procedure done under sedation. Complications are rare. Internal bleeding after retrieval occurs in roughly 0.06% to 0.35% of cases. Other uncommon risks include damage to nearby organs or pelvic infection, but these are exceptional events rather than routine concerns.
Birth Defect Risk in IVF Babies
This is the question that worries most people, and the answer requires some nuance. Large meta-analyses combining data from hundreds of thousands of births have found a roughly 30% to 40% relative increase in major birth defects among IVF-conceived children compared to naturally conceived children. In absolute terms, a large Australian population study found a birth defect rate of 8.3% among ART pregnancies compared to 5.8% in non-ART pregnancies.
However, when researchers adjusted for factors like parental age and the underlying cause of infertility, the gap narrowed considerably. For standard IVF specifically (as opposed to ICSI, a technique where sperm is injected directly into the egg), the adjusted risk was not statistically different from natural conception. ICSI carried a somewhat higher risk. One large Chinese study of over 15,000 IVF births found a defect rate of 1.23%, which was not meaningfully different from the general Chinese population rate of 1.35%.
The bottom line: IVF does appear to carry a small additional risk of birth defects, but much of that risk may stem from the fertility problems themselves rather than the procedure.
Rare Genetic Conditions
There is a small but documented increase in certain very rare genetic conditions among IVF-conceived children. These are called imprinting disorders, where genes are switched on or off abnormally during early embryo development. A meta-analysis of 23 studies found positive associations between assisted reproduction and four specific conditions: Beckwith-Wiedemann syndrome, Angelman syndrome, Prader-Willi syndrome, and Silver-Russell syndrome. These conditions remain extremely rare even among IVF babies, but the association suggests that the laboratory environment during early embryo development may affect how some genes are regulated.
Multiple Pregnancies
One of the biggest historical risks of IVF was twins or triplets. Multiple pregnancies significantly increase the chance of preterm birth, low birthweight, and complications for the mother. For years, clinics transferred two or more embryos to improve success rates, which drove up twin rates dramatically.
This has changed. Major professional organizations now recommend transferring a single embryo in most cases. The European Society of Human Reproduction and Embryology reviewed the evidence and concluded that no clinical or embryological factor justifies routinely transferring two embryos instead of one. If your clinic recommends single embryo transfer, it’s not because they’re being conservative with your chances. It’s because the outcomes are better for both you and the baby.
Cancer Risk From Fertility Drugs
Many people worry that the hormone medications used in IVF could increase cancer risk, particularly breast cancer. A large meta-analysis of 25 studies covering more than 617,000 women found no significant association between fertility treatment and breast cancer. The overall risk ratio was 0.97, meaning IVF patients had essentially the same breast cancer rate as the comparison groups. This held true even for women who underwent six or more IVF cycles and for women followed for more than 10 years after treatment. The individual medications used in IVF protocols also showed no excess risk when examined separately.
Emotional and Psychological Toll
The physical risks of IVF are relatively modest. The emotional toll can be harder to manage. IVF involves weeks of injections, frequent monitoring appointments, and an intense waiting period between embryo transfer and pregnancy test. Each cycle carries significant hope, and when cycles fail, the grief can be profound.
Research paints a stark picture: in one study, more than 80% of IVF patients scored above the threshold indicating risk for clinical depression. Rates of depression and anxiety climb further after a failed cycle. They tend to decrease after a successful one, but many people go through multiple cycles before achieving pregnancy, or ultimately stop treatment without a baby. The emotional weight of that process is a real cost of IVF, even if it doesn’t show up in medical complication statistics.
Financial Burden
The U.S. Department of Health and Human Services estimates a single IVF cycle costs between $15,000 and $20,000, and cycles involving donor eggs can exceed $30,000. Many people need more than one cycle. Insurance coverage remains inconsistent: 29 states do not require private insurance to cover IVF, and even in states with mandates, the rules often don’t apply to self-insured employer plans, which cover about 61% of workers. Medicaid offers almost no coverage for IVF. The financial strain compounds the emotional strain, particularly when early cycles are unsuccessful.
Success Rates by Age
Understanding success rates helps put the risks in context. When a genetically tested embryo is transferred, women under 35 have a live birth rate of about 54.5% per transfer. Women aged 35 to 37 see a similar rate of 54%. After 38, the rate drops to around 41.7%. These numbers represent some of the best-case scenarios, since they involve embryos that have been screened for chromosomal abnormalities. Without genetic testing, success rates are generally lower, particularly for older patients.
IVF is not a guaranteed path to pregnancy, and the cumulative physical, emotional, and financial investment can be substantial. But the procedure itself is not dangerous, and for many people dealing with infertility, it remains the most effective treatment available.