There’s a particular kind of exhaustion that comes with repeated implantation failure. You’ve done the hard part — or what you thought was the hard part — and it still hasn’t worked. The embryos are good quality. The transfers went well. And yet.
Repeated implantation failure (RIF) is generally defined as two or more failed transfers of good-quality embryos. It’s more common than people realise, and it’s one of the most under-discussed experiences in the IVF space. There’s often no clear explanation offered. “Let’s try again with a different protocol” is, for many women, the only thing they’re told.
What I want to offer here is a different starting point — not a guarantee, not false hope, but a genuine investigation into the factors that are often overlooked.
It’s Rarely Just One Thing
The research on RIF consistently points to the same conclusion: it’s multifactorial. Immunological factors, endometrial receptivity issues, oxidative stress, nutritional status, thyroid function, the vaginal and uterine microbiome — all of these can play a role. Often several do at once.
Standard IVF workups aren’t designed to investigate all of them. They’re designed to get embryos to transfer. That’s not a criticism — it’s just what specialist medicine does. Naturopathic care is where you look at the wider picture.
What We Actually Investigate
Oxidative stress and antioxidant status
Oxidative stress impairs endometrial receptivity and embryo implantation. Research supports targeted antioxidant support — including coenzyme Q10, melatonin, vitamin C and E — as meaningful interventions for women with RIF. Melatonin is particularly interesting because it works at the level of the follicle itself, not just systemically.
Vitamin D
Low vitamin D is consistently associated with poorer IVF outcomes and implantation failure. It’s one of the most straightforward things to test and correct — and it’s missed more often than it should be.
Thyroid function
Subclinical hypothyroidism and elevated thyroid antibodies both affect implantation. The threshold for “normal” in a standard GP test is not the same as the threshold that reproductive medicine research considers optimal. This matters, and it’s worth looking at closely.
The microbiome — vaginal and uterine
A lactobacillus-dominant vaginal and uterine microbiome is associated with significantly better implantation rates. Dysbiosis in this environment — which is common and often asymptomatic — can undermine a transfer without anyone realising it’s a factor.
Immune function
Elevated natural killer cell activity is one of the most studied immunological contributors to RIF. This is an area where naturopathic support — including omega-3 fatty acids and specific anti-inflammatory botanicals — has a reasonable evidence base, and where working alongside your reproductive immunologist (if you have one) becomes important.
Nutritional foundations
Beyond the basics, targeted nutritional assessment — ideally through functional testing — can identify gaps that affect implantation at a cellular level. Iron status, B12, folate, zinc, selenium: these aren’t dramatic interventions, but deficiencies in any of them have downstream consequences.
What This Looks Like in Practice
At New Leaf, we start with what you already have — your cycle history, your transfer records, your existing blood work — and look at it through a naturopathic lens. From there, we’ll identify where the gaps are, whether further testing is worth pursuing, and what a targeted treatment plan looks like for your specific situation.
This isn’t a generic IVF support protocol. It’s built around your body and your history.
Most patients we work with in this space are preparing for an upcoming transfer and want to use the lead-up time purposefully. That preparation window — typically three to four months — is genuinely valuable. Egg and sperm quality, endometrial environment, immune regulation: all of these respond to targeted support over time.
You Don't Have to Keep Doing the Same Thing
If you’ve had repeated failed transfers and feel like you’re running out of options, naturopathic care isn’t a last resort — it’s a genuinely useful layer of investigation that’s worth adding sooner rather than later.
Hannah & Jacintha are available for telehealth consultations across Australia, and Jacintha offer a free 15-minute Fertility Clarity Call if you want to talk through whether this kind of support makes sense for where you’re at.
You don’t have to have the answers already. That’s what the appointment is for.
References
- ESHRE Working Group on Recurrent Implantation Failure. (2023). ESHRE good practice recommendations on recurrent implantation failure. Human Reproduction Open, 2023(3), hoad023. https://doi.org/10.1093/hropen/hoad023
- Cimadomo D et al. (2024). Narrative review of multifaceted approaches to managing recurrent implantation failure. Clinical and Experimental Obstetrics & Gynecology, 51(4). https://doi.org/10.31083/j.ceog5104087
- Showell MG et al. (2020). Antioxidants for female subfertility. Cochrane Database of Systematic Reviews, 2020(8), CD007807. https://doi.org/10.1002/14651858.CD007807.pub4
- Xu Y et al. (2018). Pretreatment with coenzyme Q10 improves ovarian response and embryo quality in low-prognosis young women with decreased ovarian reserve: a randomised controlled trial. Reproductive Biology and Endocrinology, 16(29). https://doi.org/10.1186/s12958-018-0343-0
- Chu J et al. (2018). Whether vitamin D was associated with clinical outcome after IVF/ICSI: a systematic review and meta-analysis. Reproductive Biology and Endocrinology, 16(1), 13. https://pmc.ncbi.nlm.nih.gov/articles/PMC5807754/
- Paffoni A et al. (2014). Vitamin D deficiency and infertility: insights from in vitro fertilization cycles. Journal of Clinical Endocrinology & Metabolism, 99(11), E2372–E2376.
- Ventura M et al. (2019). Does subclinical hypothyroidism and/or thyroid autoimmunity influence the IVF/ICSI outcome? Review of the literature. Gynecological Endocrinology, 36(1), 1–5. https://doi.org/10.1080/09513590.2019.1653564
- Moreno I et al. (2016). Evidence that the endometrial microbiota has an effect on implantation success or failure. American Journal of Obstetrics and Gynecology, 215(6), 684–703. https://doi.org/10.1016/j.ajog.2016.09.075
