Embryoman
Researchers in a 2026 study found that natural FETs using donor eggs were linked to higher live birth rates, lower miscarriage rates, and lower rates of some pregnancy complications compared to medicated FETs.
Six retrievals and seven embryo transfers were needed before a Day 6 4BB euploid embryo finally led to a healthy baby at age 40, after an early euploid rate of just 1 out of 17 embryos.
Aneuploid embryo success rates after transfer are very low, with about 1–2% leading to a live birth, likely due to undetected mosaicism after PGT-A rather than true whole chromosome aneuploidy.
Here’s your IVF research roundup for April 2026. Each month, I highlight everything I’ve shared on Remembryo — including new IVF study summaries, popular social posts, answers to community questions, and a full list of research highlights with links and short summaries from my newsletter. The paywall is off for this post.
Research in a 2026 study found that bacteria detected on the embryo transfer catheter were linked to lower live birth rates, likely reflecting the patient’s own microbiome being carried into the uterus during transfer.
A 2026 study found that infertility is traumatic for some patients, with 9% meeting criteria for PTSD and 32% for complex PTSD, and patient narratives highlight distress, loss of control, and gaps in care.
A 2026 study found that low β-hCG levels (≤50 mIU/mL at 9 days after blastocyst transfer) were linked to much lower live birth rates, and that how hCG rises over time is more predictive of outcome than the initial value.
A 2026 meta-analysis explored ways to optimize natural FETs, examining ovulation timing, progesterone use, luteinized unruptured follicles, and cycle variability across natural, modified natural, and newer natural proliferative phase approaches.
A 2026 review explored why endometriosis surgery doesn’t always lead to pregnancy, highlighting factors like recurrence, undetected lesions, and underlying biological processes that aren’t addressed by surgery.
Researchers in a 2026 guideline review provide evidence-based recommendations from ESHRE on ovarian stimulation for IVF/ICSI, covering protocols, medications, monitoring, and safety.
Here’s your IVF research roundup for March 2026. Each month, I highlight everything I’ve shared on Remembryo — including new IVF study summaries, popular social posts, answers to community questions, and a full list of research highlights with links and short summaries from my newsletter. The paywall is off for this post.
Facing the risk of losing her uterus due to large fibroids, she underwent a 5½-hour surgery to remove 9 fibroids. Years later, IVF led to 3 healthy children, including one from a trisomy 16 mosaic embryo.
A 2026 study found that patients with a previous cesarean delivery had slightly lower live birth rates after IVF compared to those with a previous vaginal delivery, though the reason for this difference isn’t clear.
Researchers in a 2026 randomized trial found that ~9 weeks of transdermal testosterone before IVF didn’t improve pregnancy rates or egg numbers in women with diminished ovarian reserve.
A 2026 study of over 227,000 IVF couples found that chromosomal abnormalities were uncommon but more frequent than in the general population, and were most strongly linked to recurrent miscarriage, poor sperm quality, and younger age.
PGT-A contamination, sometimes reported as “no result,” is poorly studied, but a 2026 study found it’s rare and that undetected contamination can distort PGT results, highlighting the importance of contamination detection in testing.
A 2026 study showed that women with unexplained infertility who didn’t get pregnant after IVF had a more diverse endometrial microbiome with fewer Lactobacillus bacteria, and metabolites produced by other bacteria may influence how the uterine lining functions during implantation.
A 2026 study found that if endometrial fluid cleared before embryo transfer, live birth rates were similar to patients without fluid. When the fluid remained, live birth rates were lower, and cancelling the cycle didn’t appear to improve outcomes in a later transfer.
Here’s your IVF research roundup for February 2026. Each month, I highlight everything I’ve shared on Remembryo — including new IVF study summaries, popular social posts, answers to community questions, and a full list of research highlights with links and short summaries from my newsletter. The paywall is off for this post.
Researchers in a 2026 meta-analysis combined 15 randomized trials in women with POR or DOR and found that while some forms of acupuncture were linked to slightly more eggs retrieved, they didn’t improve pregnancy rates.
After 18 years of infertility, 6 retrievals, and more than 50 embryos arresting at day 3, Dina conceived at 41 from four frozen day 3 embryos. She delivered a healthy baby boy at 42.
A 2026 meta-analysis found no benefit of ERA or other endometrial receptivity tests in general IVF patients, with a possible improvement in live birth for RIF patients transferring untested embryos.
A 2026 study used a machine learning model to predict whether a miscarriage was euploid or aneuploid using routine medical data, without PGT-A, and showed moderate ability to distinguish between the two while identifying several associated factors.
A 2026 study found that a microfluidic device called FIND-Chip can recover additional eggs from follicular fluid that may have been missed by manual searching after an egg retrieval, with one live birth reported.
A 2026 study found that mosaic embryo outcomes vary by type and level, with high-level and trisomy mosaics showing lower success rates, while segmental mosaics had outcomes similar to euploids.
A 2026 randomized trial found that natural FETs had similar healthy live birth rates to medicated FETs, but were linked to lower risks of preeclampsia, pregnancy loss, and some other pregnancy complications.
Here’s your IVF research roundup for January 2026. Each month, I highlight everything I’ve shared on Remembryo — including new IVF study summaries, popular social posts, answers to community questions, and a full list of research highlights with links and short summaries from my newsletter. The paywall is off for this post.
A 2026 expert consensus from the Global Andrology Forum reviews how antioxidants are used in male infertility, showing which practices are supported by expert agreement and where evidence is still lacking.
A 2026 study found that switching frozen embryo transfer protocols after a failed transfer did not improve live birth compared with repeating the same protocol, including in PGT-A cycles, with some small and uncertain differences seen in specific natural FET types.