Here’s your IVF research roundup for July 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.
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🔗 Original studies are referenced in this post or within the linked Remembryo posts.
💡 Reminder: Terms underlined with a dotted black line are linked to glossary entries. Clicking these does not count toward your paywall limit.
Remembryo posts
Here’s what I covered this month on Remembryo. Click any image to read more.
Researchers in a 2026 meta-analysis combined the results of seven randomized trials and found that Lactobacillus-containing probiotics were associated with higher clinical pregnancy rates in women undergoing assisted reproductive technology, although important limitations make the results difficult to interpret. Read more.
This post provides a short summary of select studies presented during the European Society of Human Reproduction and Embryology (ESHRE) 2026 meeting in London. These studies may not have been published or peer reviewed yet. Read more.
Researchers combined the results of 86 randomized trials to evaluate ten of the most commonly used IVF add-ons and found that endometrial scratching improved the chance of having a baby, while most other add-ons showed little or no benefit or require more high-quality research. Read more.
Researchers in a 2026 meta-analysis combined the results of 11 randomized trials and found that natural FETs were associated with slightly higher live birth rates and lower miscarriage rates than medicated FETs in women who ovulate regularly. Read more.
Researchers in a 2026 meta-analysis combined the results of 9 studies and found that embryos from 0PN zygotes had similar pregnancy outcomes to embryos from normally fertilized (2PN) zygotes, despite being less likely to develop into blastocysts. Read more.
Researchers in a 2025 meta-analysis combined the results of 21 studies and found that microfluidic sperm selection improved embryo quality and slightly improved fertilization rates, but it didn't significantly improve euploid, pregnancy, or live birth rates. Read more.
Top viewed posts on social
Here you can see the top 3 most popular posts for the month on Instagram, excluding the posts from above.
- Rare case: Baby born with Down syndrome after euploid PGT-A and normal NIPT. Read more in the original publication.
- Eye-tracking study reveals how expert and beginner embryologist perform ICSI. Read more in the original publication.
- Meta-analysis finds no benefit from routine ICSI. Read more in the original publication.
And here’s the top 3 older Remembryo posts (based on Instagram story views). Click any image to read more.
After a failed first IVF cycle, researchers found that switching ovarian stimulation protocols was linked to a reduced chance of another cancellation, with factors like age, diagnosis and smoking status also contributing to success. Read more.
Researchers in a 2023 study found that about 1 in 5 women achieve a natural pregnancy following a live birth by IVF, with most pregnancies occurring after 2-3 years. Read more.
A 2025 case report describes a live birth in a 46-year-old woman using her own eggs through IVF, adding to a small number of published cases showing that pregnancy at this age, while uncommon, is still possible without add-ons or PGT-A. Read more.
IVF in the news highlights
Each week in the Remembryo newsletter, I share IVF-related stories that made headlines in the news. Below are 3 leading headlines for the month:
- Death raises questions about NAD+ wellness clinics. Read more on CBS News.
- Scientists restore sperm production after childhood cancer treatment. Read more on Scientific American.
- Could women make new eggs after birth? Read more on Scientific American.
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IVF questions from the community
Here are select questions that I answered either in my Facebook group or on Reddit.
- Can a low first beta still lead to a healthy pregnancy? Yes, a low first beta can still result in a healthy pregnancy. One study found that, among pregnancies with a low initial beta, how it rises over the following days was more predictive of live birth than the starting number. Read more: Low initial β-hCG and the chances of live birth.
- Can one frozen sperm vial be used for multiple IVF cycles? One technique involves removing only a small amount of frozen sperm from the vial and returning the rest to storage. One study found this reduced sperm motility and embryo quality, but did not lower clinical pregnancy rates. Read more: IVF outcomes after shaving/scraping donor sperm vial.
- What can be done when many eggs are immature at retrieval? One option is rescue IVM, where immature eggs are matured in the lab before insemination. Although embryos from rescue IVM generally have lower success rates than those from eggs that were already mature at retrieval, studies suggest it can still increase the number of mature eggs, euploid embryos, and live births in selected patients. Read more: About 1 in 12 poor prognosis patients have live birth thanks to rescue IVM.
IVF research brief
🔒 The full research brief for the month begins below (paid subscribers only)
Each week I flag ~10-20 IVF studies I find most helpful. Some are covered in detail on Remembryo, but paying subscribers get short summaries and links to all of them, organized into categories like implantation, egg quality, PGT-A, etc.
Below is the full list of about 59 short summaries and links for the studies (available to paying members only).
🔍 Sneak peek: 3 select summaries from the month
- A meta-analysis found mosaic embryos had lower live birth rates than euploid embryos overall, although outcomes were better for segmental mosaics than whole chromosome mosaics. Read more (full article)
- In a study of nearly 2 million women, fertility treatment was not clearly linked to a meaningful increase in hormone related cancer risk. Read more (full article)
- A review found children conceived by IVF and ICSI generally have similar long term health outcomes, though ICSI was linked to slightly higher rates of some rare conditions. Read more (full article)
If you like these, consider subscribing below to get the full list.
About Embryoman
Embryoman (Sean Lauber) is a former embryologist and the founder of Remembryo, an IVF research and fertility education website. After working in an IVF lab in the US, he returned to Canada and now focuses on making fertility research more accessible. He holds a Master’s in Immunology and launched Remembryo in 2018 to help patients and professionals make sense of IVF research. Sean shares weekly study updates on Facebook, Instagram, and Reddit regularly. He also answers questions on Reddit or in his private Facebook group.