Unexplained Infertility Is Under-Investigated Infertility: 5 Areas Your Fertility Doctor May Have Missed

You’ve been trying to get pregnant for over a year. You’ve had the ultrasounds, bloodwork, and fertility testing. Your doctor tells you that your ovaries look fine, your tubes are open, and your labs are normal.

But you’re still not pregnant.

Eventually, you’re given the diagnosis of unexplained infertility, and the next recommendation is Letrozole, IUI, or IVF.

But here’s the question I want you to consider: What if your infertility isn’t actually unexplained? What if it simply hasn’t been thoroughly investigated?

In today’s episode of the Nourished Fertility Podcast, I’m breaking down why I believe unexplained infertility is often under-investigated infertility, sharing a real client’s story, and walking you through five important areas of your health that may not have been included in your fertility workup.

Because your fertility doesn’t exist in a vacuum. Your reproductive hormones are constantly communicating with your thyroid, metabolism, blood sugar, mineral status, gut, and nervous system.

And when we only investigate your reproductive organs, we may be missing important pieces of the puzzle.

What Does an Unexplained Infertility Diagnosis Actually Mean?

Typically, unexplained infertility is diagnosed when you’ve been trying to conceive for 12 months if you’re under 35, or six months if you’re 35 or older, and your standard fertility evaluation hasn’t identified a cause.

That evaluation often includes reproductive hormones like FSH, LH, estradiol, AMH, progesterone, and TSH, along with an ultrasound, assessment of your fallopian tubes, and a semen analysis for your partner.

These tests are absolutely important and necessary.

But they’re not necessarily a comprehensive investigation into your metabolic health, nutrient status, thyroid function, inflammation, or gut health.

And that’s where I believe so many women are being underserved.

I want to be clear: I’m not against IVF. IVF is an incredible option for many women, and we work with women who are preparing for or already undergoing fertility treatments.

But I am against women feeling like they have no other options when important aspects of their health haven’t been evaluated.

A Real Client’s Story: Five Rounds of Letrozole and Still No Pregnancy

One of my clients had been trying to get pregnant for over a year.

She was ovulating every single month, her scans looked normal, and her fallopian tubes were open.

But there was one major clue that hadn’t been adequately investigated: her luteal phase was only seven to eight days long.

Your luteal phase is the time between ovulation and your next period, when progesterone helps prepare and maintain your uterine lining for a potential pregnancy.

A consistently short luteal phase can be an important clinical clue, although its significance and treatment depend on the broader fertility picture.

My client had already completed five rounds of Letrozole at 7.5 milligrams. Her doctor recommended one final round before moving on to IVF.

But she wanted to understand WHY her luteal phase was so short before making that decision.

So we started investigating.

Clue #1: Her Fasting Insulin Was Elevated

Her fasting insulin came back at 11.9, above the 2–8 range I generally like to see in my practice.

This raised questions about her insulin sensitivity.

What’s particularly interesting is that she was eating healthy, exercising regularly, and maintaining a healthy weight. But she also couldn’t lose the weight from her first pregnancy, despite her efforts.

Her hair tissue mineral analysis also showed low magnesium, which gave us another area to investigate alongside her metabolic health.

Insulin plays an important role in reproductive hormone signaling, and metabolic dysfunction can affect ovulatory function.

This is why I don’t want women assuming that insulin resistance is only something we need to investigate when someone is overweight or has PCOS.

Clue #2: Her Thyroid Hormones Told Another Story

Next, we ran a full thyroid panel.

Her active thyroid hormone was below the range I consider optimal, and her reverse T3 was elevated.

We also found an elevated calcium-to-potassium ratio on her hair tissue mineral analysis, which we considered alongside her other findings.

These results prompted us to look more closely at her thyroid and metabolic health.

Thyroid function is important for normal menstrual cycles, ovulation, and fertility. And when someone has symptoms like persistent fatigue, weight changes, or menstrual irregularities, I want to understand whether thyroid function could be contributing.

Clue #3: Her Reproductive Hormones Were Low

Her estradiol was below 30, and her LH was also low.

Despite these findings, her previous results had been labeled normal.

Estradiol levels need to be interpreted according to the day of the menstrual cycle, but these findings were another reason to investigate her reproductive hormone patterns more thoroughly.

What I want you to understand is that low reproductive hormones are clues, not necessarily the root cause themselves.

When I see these patterns, I want to understand what might be happening with metabolism, energy availability, nutrient status, thyroid function, and stress physiology.

We also found low magnesium, potassium, and sodium, along with other mineral patterns, and were awaiting her GI-MAP results to gather additional information.

Instead of treating each symptom or lab result in isolation, we were beginning to connect the dots.

The 5 Areas Commonly Missed in Fertility Investigations

1. Blood Sugar and Insulin

Your blood sugar and insulin levels influence much more than your risk of diabetes.

They also interact with your reproductive hormones and metabolic health.

You might notice symptoms like feeling shaky between meals, constant sugar cravings, needing caffeine to function, feeling exhausted after eating, or struggling with weight changes.

And while fasting glucose and A1c are useful markers, they don’t always answer every question about insulin sensitivity.

That’s why fasting insulin may be another test worth discussing based on your symptoms and medical history.

2. Minerals and Nutrient Status

I like to describe minerals as the spark plugs of your cells.

They support the processes involved in energy production, thyroid function, blood sugar regulation, and reproductive health.

Some of the nutrients we pay close attention to include iron, zinc, copper, magnesium, potassium, sodium, selenium, and iodine.

For example, iron supports oxygen transport, magnesium participates in glucose metabolism, and iodine and selenium are important for thyroid hormone production and metabolism.

But this doesn’t mean you should start taking a dozen mineral supplements.

More isn’t always better.

Excessive supplementation can create imbalances or even toxicity, which is why we emphasize appropriate testing, food-first nutrition, and individualized supplementation.

3. Inflammation

Chronic inflammation is another area worth considering when investigating fertility concerns.

Inflammatory processes can interact with reproductive function, although an elevated inflammatory marker doesn’t automatically identify the cause of infertility.

Depending on someone’s symptoms and history, we may investigate markers such as hs-CRP, homocysteine, or histamine.

The goal is to understand whether there’s an underlying health concern that needs additional attention rather than simply assuming inflammation is the explanation.

4. Gut Health

Your gut plays an essential role in digestion, nutrient absorption, and overall health.

If you’re struggling with chronic bloating, constipation, digestive discomfort, or nutrient deficiencies, these symptoms deserve attention.

Inside our practice, we sometimes use comprehensive stool testing, including GI-MAP, alongside bloodwork and other assessments to explore digestive concerns.

5. Stress and Your Nervous System

Finally, we need to talk about stress.

And no, I’m not going to tell you to “just relax and you’ll get pregnant.”

That advice is dismissive, frustrating, and doesn’t reflect how complex infertility really is.

What I do want you to understand is that stress isn’t just about whether you feel stressed.

Your body responds to many different stressors, including inadequate energy intake, excessive exercise, poor sleep, illness, and psychological stress.

These factors can influence the hormonal pathways involved in reproduction, particularly when the body isn’t getting enough energy to support its needs.

That’s why we look at the bigger picture instead of focusing exclusively on your reproductive organs.

What Should You Do If You’ve Been Diagnosed With Unexplained Infertility?

If you’ve been told your infertility is unexplained, here are three things I encourage you to consider.

First, track your cycle. Pay attention to whether you’re ovulating, the length of your luteal phase, your bleeding patterns, and symptoms throughout the month. These details can provide valuable information to discuss with your healthcare team.

Second, look at your foundations without judgment. Are you eating enough? Are you balancing meals with carbohydrates, protein, and fat? Are you getting enough rest? Is your exercise routine supporting your body or potentially adding to an already high physical stress load?

Third, ask whether additional testing is appropriate before making your next treatment decision. This doesn’t mean delaying necessary fertility care. It means understanding which questions have already been answered and which ones may still be worth investigating.

You deserve an individualized evaluation and a plan that takes your entire health picture into consideration.

Our Only Sale of the Year: Black Friday Enrollment Is Officially Open!

If you’ve spent all of 2026 trying to get pregnant, being told your labs are normal, and wondering why nothing is working, I want you to know that you don’t have to keep guessing.

Our annual Black Friday sale for the Nourished Fertility Method is officially HERE!

From now through November 30th, or until all 7 spots are filled, you can enroll in our six-month premier fertility coaching program and receive FREE HOLIDAY SUPPORT.

That means you can start working with us immediately, but your official six-month program doesn’t begin until January 1st, giving you additional weeks of support completely free.

Inside the Nourished Fertility Method, we combine comprehensive fertility bloodwork, individualized nutrition and lifestyle support, and additional testing when appropriate to build a custom fertility recovery protocol based on your needs.

If you’re ready to investigate the factors that may be contributing to your fertility struggles and take meaningful steps toward your goal of a 2027 pregnancy, this is your opportunity.

Only 7 spots are available, first come, first served. Last year, every spot filled immediately.

Apply for the Nourished Fertility Method through the link in the show notes to get started.