Unexplained infertility

Unexplained infertility should really be referred to as “unexplained medically”. It is not a diagnosis, it is a failure to diagnose.


The terms Infertility and Sub fertility are often interchanged, but there is a world of difference between them. Infertility means that you (as a couple) are unable to get pregnant ever, without medical intervention. Sub fertility simply means you are unable to get pregnant at the moment. 

Examples of true infertility include;

  • Bilateral fallopian tube blockage
  • Menopause
  • Inoperable obstructive azoospermia
  • Absent reproductive organs
  • Some genetic abnormalities (male or female)
  • Retrograde ejaculation

Unfortunately, some IVF clinics treat both categories the same.

Sub fertility

If a semen analysis is satisfactory and the woman’s Day 3 and Day 21 bloods don’t show anything then the failure to conceive is often labelled “unexplained”. There are a whole range of other factors such as weight, exposures to toxins, emotional and nutritional status which are not considered by the medical profession which can be the underlying cause. Often hormone levels are sub clinical, they are not entirely out of range, but are not optimum for a viable pregnancy.

Causes of true sub fertility include;

  • PCOS
  • Endometriosis
  • Low sperm count
  • DNA fragmentation
  • Poor motility or morphology
  • Underactive thyroid
  • Auto immune disease
  • Male or female age
  • Male or female obesity
  • Over exercising
  • Exposure to toxins, particularly endocrine disrupting chemicals.
  • Infrequent intercourse
  • Irregular menstrual cycles
  • Anovulatory cycles
  • High stress levels

By adopting a nutrition and lifestyle programme that specifically targets your fertility health, it is possible to succeed to conceive, despite unexplained infertility, usually within 3 months. If you have had a poor lifestyle or diet over a prolonged period, it may take a little longer, but rest assured you will be putting the best possible resources into your future little one.

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