Childhood Stress, ACE Scores, and Fertility Problems
Can childhood stress affect fertility decades later?
The research says it can be part of the picture. In a large cohort study, women reporting high childhood adversity were more likely to report fertility difficulties and absent periods than women reporting none, and their month-to-month probability of conceiving was lower. This is an association across populations, not a diagnosis for any individual — and it does not mean your history caused your infertility. What it does mean is that a stress history is a legitimate clinical variable, not a soft one.
What is an ACE score?
ACE stands for Adverse Childhood Experiences. The original 1998 study defined ten categories of abuse, neglect, and household dysfunction occurring before age 18, and the questionnaire counts how many a person experienced. It is free, it takes two minutes, and it is one of the better-validated predictors in population health of adult chronic disease risk.
It is also common. CDC analysis of Behavioral Risk Factor Surveillance System data from 2011 to 2020 found roughly two thirds of surveyed U.S. adults reported at least one ACE, and about one in six reported four or more, with prevalence highest among women.
One correction worth making, because a version of this circulates online: the often-quoted "60 percent of women versus 50 percent of men" is not what the population data shows. A 2020 analysis in BMC Public Health found women's mean ACE score modestly higher than men's — 1.64 versus 1.46 — and a 2019 BRFSS analysis of adults aged 18 to 39 found a difference of about five percentage points in the proportion reporting four or more ACEs, with a much larger gap specifically for sexual abuse. Women do score higher. The size of the gap gets exaggerated in the retelling.
What is the evidence linking ACEs to fertility specifically?
The most directly relevant study examined ACEs against fertility difficulties and menstrual cycle characteristics. As the number of adverse experiences rose, reported fertility difficulties and amenorrhea rose with it, and fecundability — the per-cycle probability of conceiving — declined. Comparing women in the high-adversity group with women reporting none, the relative risk of infertility was roughly two and a half to three times higher, with a similar increase for absent periods. Associations held after adjustment for age, BMI, race, education, smoking, and income. Cycle irregularity showed a similar direction but a weaker association.
A 2023 integrative review in the Journal of Midwifery & Women's Health pulled together twenty studies on ACEs and the reproductive traumas of infertility and pregnancy loss, and concluded that an association may exist while noting the literature's real limits: much of it is self-reported, retrospective, and heterogeneous.
So: consistent direction, plausible mechanism, imperfect evidence. Worth taking seriously; not worth overstating.
What is the plausible mechanism?
Early chronic stress appears to change the set point of the systems that later have to support a pregnancy.
The first is the stress axis itself. Persistent early adversity is associated with altered cortisol regulation in adulthood, and cortisol signaling sits directly upstream of the hypothalamic pulse generator that drives ovulation. That is the same pathway that produces luteal phase problems and delayed ovulation under other kinds of load — the mechanism we describe in how the nervous system affects fertility.
The second is immune and inflammatory. High-adversity histories are associated in the literature with higher inflammatory markers and higher rates of autoimmune conditions in adulthood. Inflammation and immune regulation matter at implantation and in early pregnancy, which is why our workups look at them rather than treating them as a separate specialty.
The third is metabolic. Adversity is associated with insulin resistance and cardiometabolic risk later in life, and insulin resistance is one of the most actionable fertility variables we deal with.
None of these are mystical. They are measurable, and that is the point of raising the subject at all.
Why does this belong in a fertility workup rather than a therapist's office alone?
Because it changes what you test and what you expect.
If a woman with a high-adversity history is trying to conceive with cycles that look nearly normal, the pattern we want to see documented includes luteal phase quality, thyroid function, prolactin, fasting insulin and glucose, inflammatory markers, and iron status — not because a history predicts a specific result, but because it raises the prior probability that one of those systems is running off-baseline. That is a different posture from "your labs are fine, keep trying," which is the standard experience of the patients who end up in our unexplained infertility root causes that get missed category.
It also changes the conversation about care itself. Pelvic exams, transvaginal ultrasounds, injections, and repeated procedures land differently on a nervous system with a trauma history. Trauma-informed handling of that — asking before touching, explaining before doing, offering control over pacing — is basic clinical decency, and it is also practical: patients who dread appointments delay them.
What this is not
This is not the claim that stress causes infertility, and it is not permission for anyone to tell you to relax. "Just relax and it will happen" is one of the more damaging sentences in reproductive medicine, and adversity research does not support it — it points the other way, toward physiology that can be measured and addressed.
It is also not a reason to blame yourself for a history you did not choose. A high ACE score is a risk marker across a population. Plenty of people with high scores conceive without difficulty, and plenty with a score of zero face significant infertility.
What is actually worth doing with this information?
- Take the questionnaire if you want the information. It is free and it takes minutes. Its value is context, not a verdict.
- Tell your care team if it is relevant to how you experience care. You do not owe anyone your history; you are allowed to say "I need procedures explained and paced" without explaining why.
- Have the measurable systems measured. Cortisol pattern in context, thyroid, prolactin, insulin and glucose, inflammatory markers, ferritin, and the luteal phase.
- Get real mental health support if you want it — from a licensed trauma-trained clinician. This is their expertise, not ours, and the two kinds of care work well in parallel.
- If pregnancy loss is part of your history, the immune and metabolic workup matters even more; our recurrent loss care page explains what that includes.
The bottom line
A childhood adversity history is associated with lower fecundability and higher reported infertility in population research, most plausibly through the stress axis, immune regulation, and metabolic health — all of which can be measured and worked on. It is not destiny and it is not fault. It is one more reason to look at the whole system rather than repeat a normal-looking hormone panel. Here in Huntington, that whole-system look is what our Metabolic & Immune Fertility Evaluation exists to do, for patients across Long Island who have been told nothing is wrong.
This article is for general educational purposes and isn't a substitute for individualized medical or mental health care. If your history includes trauma, working with a licensed mental health professional alongside your medical team is worth considering. Any diagnosis or treatment decision should be made with your care team.
East to West Fertility is a metabolic and immune-focused fertility clinic in Huntington, Long Island, serving patients across Long Island, NYC, and beyond. Learn more about our Metabolic & Immune Fertility Evaluation or call 631-416-4940.
References:
- Jacobs MB, et al. "Adverse childhood event experiences, fertility difficulties, and menstrual cycle characteristics." Journal of Psychosomatic Obstetrics & Gynecology, 2015 (PMC4854288).
- "An Integrative Review of Adverse Childhood Experiences and Reproductive Traumas of Infertility and Pregnancy Loss." Journal of Midwifery & Women's Health, 2023. doi:10.1111/jmwh.13585.
- CDC. "Prevalence of Adverse Childhood Experiences Among U.S. Adults — Behavioral Risk Factor Surveillance System, 2011-2020." MMWR, 2023;72(26).
- "The frequencies and disparities of adverse childhood experiences in the U.S." BMC Public Health, 2020. doi:10.1186/s12889-020-09411-z.
- "Adverse Childhood Experiences (ACEs) among reproductive age women: Findings from the 2019 BRFSS," 2021.
- Felitti VJ, et al. "Relationship of childhood abuse and household dysfunction to many of the leading causes of death in adults." American Journal of Preventive Medicine, 1998 — the original ACE study.
