Embryoman 
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.
A 2025 study found that after a first frozen embryo transfer, experiencing an early pregnancy loss did not increase the risk of loss in the next transfer, for both euploid or untested embryos.
In a 2025 study, researchers masked mosaic PGT-A results and found that mosaic reporting did not meaningfully improve embryo selection or live birth prediction beyond standard criteria, suggesting that PGT-A’s main clinical value lies in identifying clearly aneuploid embryos.
A 2026 study suggests that restoring the protein SGO1 can reduce early chromosome separation in eggs, a process that might help reduce embryo aneuploidy, though this was not directly tested.
In DOR patients, a 2025 study found that follicles measuring 15–17 mm at the time of egg retrieval were associated with the best outcomes, suggesting that optimal trigger timing in this group might occur earlier than standard thresholds used for normal responders.
Here’s your IVF research roundup for December 2025. 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 2025 study suggests that most patients with recurrent pregnancy loss who transfer up to 3 euploid embryos go on to have a live birth, though data from later transfers are limited.
These are the top 5 posts that got the most engagement on social media or the most page views here on Remembryo in 2025. No paywall on this post.
In a 2025 meta-analysis, day 5 blastocysts were linked to higher pregnancy and live birth rates than day 6 blastocysts, while newborn outcomes were similar and poor quality day 5 embryos showed comparable potential to good quality day 6 embryos.
After a failed retrieval and two poorly grade embryos (3BC+ and 2CB-), this patient had back-to-back success: her first transfer at 38 led to a son, and the second at 40 is now a 12-week pregnancy.
A 2025 review found that men with infertility are more likely to have certain health conditions, but the reasons aren’t clear and the overall risks are still low, suggesting that fertility testing can be a good chance to check on general health.
This post provides a short summary of select news releases/studies from the American Society for Reproductive Medicine (ASRM) 2025 meeting in Texas. These studies may not have been published or peer reviewed yet.
A 2025 study introduces the term “oocyte and early embryo competence defects” to describe younger IVF patients who repeatedly have no transferable embryos due to low quality eggs, finding that about 13–23% had genetic changes.
Here’s your IVF research roundup for November 2025. 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 2025 study showed that supplement use is widespread among IVF patients, with mixed impressions, limited evidence, and frequent confusion that leads many people to seek guidance from online communities rather than from clinical recommendations.
In a 2025 study, researchers found that poor mitochondrial activity limits the ability of immature eggs to reach maturity, leading to reduced maturation in eggs from older women.
A small 2025 study found that most pregnancies show detectable hCG by day 6 after a blastocyst transfer, and those that first become positive on day 8–10 have higher rates of biochemical and ectopic pregnancy and a lower chance of ongoing pregnancy.
A 2025 case report shows that some ICSI-derived 3PN embryos can be rescued by removing the extra female pronucleus, resulting in a healthy live birth, but the technique remains experimental.