Unexplained infertility - Wokingham, Berkshire

What is unexplained infertility?
How is unexplained infertility diagnosed?
How common is unexplained infertility?
What western medicine may be missing
How TCM understands unexplained infertility
Acupuncture for unexplained infertility
Chinese herbal medicine for unexplained infertility
Unexplained infertility and IVF
Diet and lifestyle
Commonly asked questions
References

1. What is unexplained infertility?

Unexplained infertility — also known as idiopathic infertility — is a diagnosis given to couples who have been trying to conceive for twelve months or more (or six months if the woman is over 35) and in whom standard fertility investigations have failed to identify a specific cause. It is, in short, a diagnosis of exclusion: the tests have not found anything wrong, and yet conception has not occurred.

For many couples, receiving this diagnosis is one of the most frustrating experiences of their fertility journey. It offers no explanation, no clear pathway forward and no indication of how long the problem might persist. It can also feel dismissive — as though the difficulty is imagined or simply a matter of patience — when the reality is that something genuinely is preventing conception, even if the standard battery of tests has not been sensitive enough to detect it.

The crucial point to understand about unexplained infertility is that it does not mean there is nothing wrong. It means that western medicine's standard diagnostic tools — useful as they are — have not identified what is wrong. Traditional Chinese medicine (TCM) offers a far more detailed and granular diagnostic assessment of reproductive function, and in the vast majority of couples I see with this diagnosis, I am able to identify clear and treatable patterns of imbalance that are directly contributing to their difficulty conceiving.

I have extensive experience helping couples with unexplained infertility conceive — both naturally and by improving their outcomes with assisted conception. I practise at clinics in Wokingham, Berkshire, and offer online consultations for patients who cannot attend in person.

2. How is unexplained infertility diagnosed?

A diagnosis of unexplained infertility is made after a standard fertility investigation has been completed and returned no significant abnormal findings. The tests typically included in this investigation are:

Semen analysis — assessing sperm count, motility (movement) and morphology (shape)
Ovulation confirmation — usually via a day 21 progesterone blood test or transvaginal ultrasound tracking
Tubal patency assessment — confirming the fallopian tubes are open, usually via hysterosalpingography (HSG) or laparoscopy
Ovarian reserve testing — AMH (anti-Müllerian hormone) blood test and antral follicle count by ultrasound
Hormonal profile — FSH, LH, oestradiol and prolactin, usually measured on day 2–3 of the menstrual cycle
Thyroid function — TSH and thyroid antibodies, as thyroid dysfunction is a common and frequently overlooked cause of fertility problems
Uterine assessment — pelvic ultrasound to check for fibroids, polyps or structural abnormalities

When all of these tests return within normal limits, the couple is given the diagnosis of unexplained infertility. However, it is important to recognise what these tests do not assess: sperm DNA fragmentation, the quality of the egg (as opposed to the number of eggs), the functional quality of the uterine lining and its receptivity to implantation, the immunological environment of the uterus, the precise timing and quality of ovulation, subtle hormonal imbalances within the normal range, and a wide range of other factors that TCM diagnosis can identify and address.

3. How common is unexplained infertility?

Unexplained infertility accounts for approximately 20–30% of all infertility diagnoses, making it one of the most common categories of fertility problem. It is estimated to affect around one in six couples who are trying to conceive.

Despite being so prevalent, it remains one of the least satisfactorily addressed diagnoses in reproductive medicine. Western medicine's standard response is typically to offer intrauterine insemination (IUI) or move directly to IVF — treatments that bypass the unknown cause rather than identifying and addressing it. Many couples with unexplained infertility do conceive naturally given time, but for those who have been trying for over a year and want to understand and actively address the problem, TCM offers a genuinely different and more investigative approach.

4. What western medicine may be missing

The standard fertility investigation is highly effective at detecting gross abnormalities — absent or severely impaired sperm, completely blocked tubes, absent ovulation, major uterine pathology. But it is designed around clear binary outcomes: is ovulation happening or not? Are the tubes open or not? It is much less effective at detecting the subtle, functional imbalances that sit within the normal range but are nonetheless sufficient to prevent conception.

From clinical experience, some of the most common factors that western medicine's standard investigation misses include:

Sperm DNA fragmentation — standard semen analysis assesses count, motility and morphology but does not measure DNA fragmentation, which is the degree of damage to the genetic material within the sperm. High DNA fragmentation is compatible with normal semen parameters but significantly impairs fertilisation rates, embryo development and miscarriage risk.
Subtle egg quality issues — AMH measures the quantity of remaining follicles but says nothing about the quality of the eggs within them. Poor egg quality — which can arise from age, oxidative stress, mitochondrial dysfunction or chronic inflammation — is one of the most important and most underdiagnosed contributors to unexplained infertility.
Subtle luteal phase deficiency — a progesterone level above the threshold used to confirm ovulation may not be sufficient to support implantation and early pregnancy. Some women with unexplained infertility have ovulation that is confirmed by blood test but of insufficient hormonal quality to maintain a viable luteal phase.
Implantation failure — even when a good-quality egg is fertilised and a healthy embryo formed, it must implant successfully in a receptive uterine lining. Problems with endometrial receptivity — including thin lining, poor blood flow, immune rejection of the embryo or subtle inflammatory changes — are significant causes of unexplained infertility that standard testing does not assess.
Immunological factors — abnormal immune responses, including elevated natural killer (NK) cells in the uterine lining, antiphospholipid antibodies and other immunological factors, can cause the body to reject the embryo before implantation can be established. These are not included in standard fertility investigations.
Subclinical hypothyroidism — a TSH level within the conventional normal range (up to 4.5 mIU/L) may nonetheless be too high for optimal fertility. Many fertility specialists now regard a TSH above 2.5 mIU/L as suboptimal in women trying to conceive, yet this would be reported as normal on a standard blood test.
Chronic stress and elevated cortisol — chronic psychological and physiological stress suppresses the reproductive hormonal axis through its effect on cortisol and GnRH (gonadotropin-releasing hormone). This is a well-documented mechanism by which stress impairs fertility, yet it is never assessed as part of a standard fertility investigation.

5. How TCM understands unexplained infertility

In traditional Chinese medicine, unexplained infertility does not exist as a diagnosis — because TCM has a much more detailed and granular diagnostic framework than western medicine, capable of identifying subtle patterns of imbalance that standard blood tests and ultrasound scans cannot detect.

In my clinical experience, the most common patterns underlying unexplained infertility are:

Blood deficiency

Blood deficiency is the single most common pattern I identify in women with unexplained infertility. In TCM, blood is more than just the red fluid measured in a full blood count — it is the nourishing, yin substance that feeds the uterine lining, supports follicular development, provides the material foundation for the egg and sustains early pregnancy. When blood is deficient, all of these functions are subtly compromised, even when blood test results are within the normal range by western medicine's standards.

Western medicine's definition of anaemia is set at a threshold relevant to life-threatening disease, not optimal reproductive function. A haemoglobin level that is technically within the normal range may still be insufficient to support the high nutritional demands of a healthy menstrual cycle, optimal egg quality and successful implantation. TCM diagnosis identifies blood deficiency through a much broader range of signs: a pale complexion or pale lips, a pale tongue, a thin or thready pulse, fatigue, poor sleep, scanty or light-coloured menstrual flow, dizziness on standing and dry skin. These are the signs I look for in every fertility patient.

Blood deficiency can arise from overwork and insufficient rest, excessive exercise, a diet deficient in blood-building foods (particularly iron-rich foods and protein), a history of heavy periods or haemorrhage, or simply a constitutional tendency. It is particularly common in women who have a demanding career, exercise intensively, follow a restrictive diet or have already had a child.

Qi (energy) deficiency

Qi — the body's vital energy — is required to move blood through the uterus and pelvis, to drive ovulation, to support the muscular contractions that move the egg down the fallopian tube, and to provide the energy for implantation and early embryonic development. When qi is deficient, all of these processes are sluggish and inefficient. Qi deficiency often coexists with blood deficiency, as blood provides the nourishing material for qi and qi moves blood.

In western terms, qi deficiency corresponds broadly to depleted physical energy reserves — often the result of overwork, chronic sleep deprivation, excessive exercise or a chronically demanding lifestyle that gives the body insufficient time to rest and regenerate.

Kidney deficiency

The Kidney — in TCM terms — is the root of all reproductive function, governing the body's fundamental constitutional vitality (jing) and the production of reproductive hormones. Kidney deficiency can manifest as deficiency of either Kidney yin (nourishing, cooling, moistening) or Kidney yang (warming, activating), or both. Subtle Kidney deficiency is one of the most important and most frequently overlooked patterns in unexplained infertility, particularly in women in their mid-to-late thirties for whom natural reproductive aging has begun to reduce the strength of Kidney yin and jing.

Liver qi stagnation

Chronic stress, emotional tension, frustration and the psychological burden of infertility itself cause the stagnation of Liver qi — the disruption of the smooth, free flow of energy through the body's channels. This stagnation directly impairs hormonal regulation, disrupts the smooth development and release of the egg at ovulation, and reduces blood flow to the uterus and endometrium. It is one of the most powerful contributors to functional fertility problems that western medicine cannot identify or measure.

Subtle blood stasis or cold uterus

Some women with unexplained infertility have subtle signs of blood stagnation or cold in the uterus — conditions that impair the quality of the endometrial lining and its receptivity to implantation — without these being detectable on standard investigations. Signs include dark or clotted menstrual blood, menstrual pain that is relieved by heat, a tendency to cold extremities or a cold lower abdomen, and a history of endometriosis or pelvic inflammatory disease.

6. Acupuncture for unexplained infertility

Acupuncture is highly effective for unexplained infertility precisely because it addresses the kinds of subtle functional imbalances that western medicine's standard investigation misses. It works through multiple simultaneous mechanisms to improve reproductive function across the board.

Regulating the menstrual cycle and hormones

Acupuncture influences the hypothalamic-pituitary-ovarian (HPO) axis — the hormonal cascade that governs the menstrual cycle. It can improve the quality of the follicular phase (supporting more optimal follicle development), the timing and completeness of the LH surge (ensuring clean, well-timed ovulation), and the strength of the luteal phase (supporting adequate progesterone production and endometrial development for implantation). These subtle improvements in cycle quality are often the difference between conception and its absence in women with unexplained infertility.

Improving blood flow to the uterus

Acupuncture significantly increases blood flow to the uterus, as measured by Doppler ultrasound studies. This improves endometrial thickness and quality, enhancing the receptivity of the uterine lining and supporting successful implantation. Poor uterine blood flow is one of the most common findings in women with unexplained infertility who subsequently respond to acupuncture treatment.

Reducing stress and regulating cortisol

Research has demonstrated that acupuncture reduces stress, anxiety and depression, and regulates the stress hormone cortisol. By reducing cortisol and activating the parasympathetic nervous system, acupuncture removes one of the most significant and most commonly overlooked barriers to conception in women with unexplained infertility. The psychological burden of infertility is itself a significant stressor that can perpetuate the very problem it arises from — and acupuncture breaks this cycle directly.

Improving egg quality

By improving blood flow to the ovaries and reducing oxidative stress and inflammation in the ovarian environment, acupuncture can improve egg quality over a three-month treatment course. This is particularly relevant for women with unexplained infertility where subtle egg quality issues — undetectable by standard investigation — are a contributing factor.

Supporting implantation

Acupuncture has been shown to improve implantation rates by improving endometrial receptivity, modulating the uterine immune environment and reducing uterine contractions at the time of implantation. For women with unexplained infertility where subtle implantation failure is the likely cause, this is among the most important therapeutic actions of acupuncture.

Regulating irregular menstrual cycles

Many women with unexplained infertility have cycles that are regular enough to be dismissed in a standard investigation but irregular enough to affect their fertility — cycles that are slightly too long or too short, that vary significantly from month to month, or that have poor cycle quality despite technically occurring within the normal range. Acupuncture is highly effective at regulating these subtle cycle irregularities, restoring the consistency and quality of the monthly cycle that is needed for reliable conception.

7. Chinese herbal medicine for unexplained infertility

Chinese herbal medicine is an essential complement to acupuncture for unexplained infertility, particularly for women with blood deficiency or Kidney deficiency — patterns that require direct nourishment and replenishment of the body's fundamental reproductive substances, which acupuncture alone cannot always fully address.

For women with blood deficiency, herbal formulas that nourish blood and yin — building the endometrial lining, improving egg quality and strengthening the body's ability to sustain implantation and early pregnancy — are the primary treatment. These formulas work gradually and continuously, building reproductive capacity from within over a course of several months.

For women with Kidney deficiency, herbs that strengthen the Kidney yin, yang and jing provide the constitutional foundation for improved ovarian function, better egg quality and stronger reproductive vitality. For women with Liver qi stagnation, herbs that smooth the flow of qi and regulate the menstrual cycle address the stress-related disruption of hormonal regulation that is so common in women with unexplained infertility.

A Korean clinical study published in the Journal of Alternative and Complementary Medicine (Park et al., 2010) found that acupuncture and herbal medicine treatment in women with unexplained infertility produced significantly improved pregnancy outcomes, with 50% of the women in the treatment group achieving pregnancy during the study period. This is an important demonstration of the effectiveness of the combined TCM approach for this challenging diagnosis.

The herbs I prescribe come from Sun Ten in Taiwan — pharmaceutical-grade herbal granules tested to the highest international quality and safety standards. Every prescription is bespoke, formulated specifically for the individual patient's pattern of imbalance identified through detailed TCM diagnosis.

8. Unexplained infertility and IVF

Many couples with unexplained infertility are advised to proceed directly to IVF. While IVF can certainly help some couples with this diagnosis to conceive, it is important to understand that IVF does not identify or address the underlying cause of the infertility — it simply provides a more controlled and assisted environment in which fertilisation and embryo development can take place, bypassing many of the steps at which the problem may be occurring.

For couples where the underlying issue is egg quality, subtle hormonal insufficiency, poor endometrial receptivity or implantation failure, IVF without addressing these underlying factors may not be successful — and repeated IVF failure is a frustrating and common experience for couples with unexplained infertility.

A more effective approach — and one I would strongly advocate — is to pursue a focused course of acupuncture and Chinese herbal medicine for three to six months before moving to assisted conception. This preparation period allows time to identify and address the underlying TCM patterns, improve egg and sperm quality, optimise the endometrial environment and improve the overall hormonal and physiological conditions for conception. Many couples conceive naturally during this preparation period; for those who proceed to IVF, the improved baseline significantly increases the chance of success.

If you are planning IVF, I recommend beginning acupuncture and herbal treatment at least three months before your cycle starts. I also offer IVF acupuncture support throughout the cycle itself, including out-of-hours sessions on the day of egg collection and embryo transfer.

9. Diet and lifestyle for unexplained infertility

Because the most common TCM patterns underlying unexplained infertility are blood deficiency, qi deficiency and Kidney deficiency, diet and lifestyle recommendations are targeted at rebuilding these fundamental resources.

Eat blood-building foods

Blood deficiency responds well to dietary changes, particularly increasing iron-rich and protein-rich foods. From a TCM perspective, the most blood-nourishing foods include dark leafy green vegetables (spinach, kale, watercress), red meat in moderate quantities, liver, eggs, legumes (lentils, chickpeas, black beans), beetroot, dark berries, dates and molasses. Combining iron-rich foods with vitamin C (citrus fruits, peppers, kiwi) significantly improves iron absorption. Avoiding tea and coffee with meals reduces the inhibition of iron absorption by tannins.

Nourish the Kidney

Foods that support Kidney function in TCM include black beans, walnuts, dark sesame seeds, kidney beans, seaweed, bone broth and seafood (particularly oysters, which are traditionally considered highly nourishing to Kidney essence). These foods are worth incorporating into the diet alongside the herbal treatment prescribed.

Reduce overwork and rest adequately

Chronic overwork and insufficient sleep are among the most significant drivers of blood and qi deficiency in modern life. Adequate, regular sleep — ideally seven to eight hours per night, at consistent times — is one of the most important lifestyle changes for women with unexplained infertility driven by these patterns. In TCM, night-time is the period of maximum yin and the time when blood is restored and renewed. Regularly burning the candle at both ends directly depletes the blood and yin that are needed for fertility.

Reduce excessive exercise

While moderate regular exercise is beneficial for fertility, excessive or intense exercise can significantly deplete blood and qi, impair hormonal function and suppress ovulation. Women with unexplained infertility who exercise very intensively — particularly long-distance running, intense HIIT training or multiple long gym sessions per week — should consider reducing to moderate, regular exercise such as yoga, swimming, walking or Pilates during the period of fertility treatment.

Manage stress

Chronic stress is both a consequence and a cause of unexplained infertility. Managing stress effectively — through whatever combination of approaches works for the individual — is essential. Acupuncture itself is a powerful stress management tool, and many patients find that regular weekly sessions produce a significant and sustained improvement in their baseline stress levels. Mindfulness practices, yoga, adequate time in nature and reducing excessive workload are all valuable supportive measures.

10. Commonly asked questions about unexplained infertility

Does unexplained infertility mean there is nothing wrong?

No — unexplained infertility means that standard western medical investigations have not identified a specific cause, not that there is no cause. In the vast majority of cases, there is a genuine reason why conception has not occurred — it is simply that the current diagnostic tools are not sensitive enough to detect it. Traditional Chinese medicine offers a far more detailed diagnostic framework and in most patients I see with this diagnosis, I identify clear and treatable patterns of imbalance.

How long should I try naturally before seeking help?

The standard medical guideline is to seek investigation after 12 months of trying if you are under 35, or after 6 months if you are over 35. However, there is no reason to wait this long before seeking the support of a TCM practitioner. Beginning acupuncture and Chinese herbal medicine treatment early — even while continuing to try naturally — optimises the conditions for conception and ensures that any subtle imbalances are being addressed without delay. Time is particularly precious for women over 35, for whom starting treatment promptly is especially important.

Should I go straight to IVF with unexplained infertility?

Not necessarily — and not without first addressing the underlying cause. IVF bypasses many of the steps at which the problem may be occurring, but does not identify or treat the root cause. For couples where subtle egg quality, endometrial receptivity or implantation factors are involved, IVF without addressing these underlying issues may not succeed. I would strongly recommend a course of acupuncture and Chinese herbal medicine for three to six months before proceeding to IVF. Many couples conceive naturally during this period; for those who proceed to IVF, the improved baseline significantly increases the chance of success.

Can acupuncture alone help with unexplained infertility?

Yes — acupuncture alone can be very effective for unexplained infertility, particularly where the primary issue is stress, hormonal dysregulation, poor uterine blood flow or subtle cycle quality problems. However, for women with significant blood deficiency or Kidney deficiency, the combination of acupuncture and Chinese herbal medicine is consistently more effective than acupuncture alone. Herbs provide the direct nourishment and replenishment that these patterns require and that needling alone cannot fully address.

How long does treatment take?

Most patients begin to notice improvements in their menstrual cycle — greater regularity, less pain, reduced premenstrual symptoms, better energy — within the first two to three treatment cycles. A minimum of three months of consistent treatment is recommended before assessing the full impact on fertility, as this aligns with the timeframe in which eggs develop and the endometrial environment changes. Some couples conceive within this period; others require a longer course of treatment, particularly those with more complex or long-standing patterns of imbalance.

How much does treatment cost?

Full pricing information is available on the treatment prices page. An initial acupuncture consultation at my Wokingham clinic is £70; follow-up sessions are £60. Chinese herbal medicine consultations are available from £50, with bespoke herbal prescriptions at £35 per week. I also offer online fertility consultations for patients who cannot attend in person.