Causes of Infertility: What the Statistics Show
Share
Understanding the Causes of Infertility: What the Statistics Really Tell Us
If you've been trying to conceive without success, it can feel incredibly isolating, as though you're the only one facing this particular struggle. You're not. At least 25 percent of couples planning a baby will have trouble conceiving, and more and more couples are turning to fertility treatments for support. On average, young couples can expect to wait around three years before conceiving, which is one reason why very few doctors will consider a diagnosis of infertility until at least a year has passed.
Understanding what actually causes fertility problems, and how common each cause really is; can take some of the fear out of the unknown. It can also help you ask better questions when you do see your doctor.
The Medical Breakdown of Infertility Causes
From a medical point of view, infertility is generally attributed to the following causes, and in roughly these proportions:
- Ovulatory failure (including Polycystic Ovary Syndrome): 20% of cases
- Tubal damage: 15% of cases
- Endometriosis: 5% of cases
- Male problems: 26% of cases
- Unexplained: 30% of cases
If these figures don't add up to a neat 100 percent, that's because many couples experience more than one issue at the same time. For example, a woman may have endometriosis while her partner also has a low sperm count - so more than one factor is contributing to the couple's overall fertility challenge.
It's also worth noting that around 40 percent of fertility problems are associated with men overall, yet in the early stages of investigation, attention often focuses mainly on the female partner. Since it takes two to conceive, testing both partners together - rather than one after the other - is important for getting a full picture.
Why 'Unexplained' Doesn't Mean 'Untreatable'
Interestingly, the single most common outcome of fertility investigations is a diagnosis of 'unexplained infertility': meaning that after thorough testing, doctors simply cannot find a specific medical cause. This accounts for around 30 percent of cases.
This is exactly where a natural approach can play such an important role. If a couple isn't conceiving, there is clearly something affecting their fertility - it's just that conventional testing hasn't identified a structural or hormonal problem. The answer lies in looking more broadly: at lifestyle factors, nutritional deficiencies, and even emotional wellbeing. As the saying goes, you can't find something you aren't looking for.
Fertility is multi-factorial. In other words, there are many things that can affect your ability to conceive, and not all of them are strictly medical. To get to the root of a fertility problem, it's worth looking at every aspect of your health, your emotional state and your day-to-day lifestyle, rather than assuming that 'unexplained' means there's nothing that can be done.
Are You Infertile, or Simply 'Subfertile'?
It's worth pausing on the language here, because it matters. A diagnosis of infertility does not necessarily mean you will always be infertile: it simply means there's a problem that needs to be addressed. In cases of unexplained infertility in particular, the more accurate term is often 'subfertile', because with the right support, many couples in this position do go on to conceive.
Age is a genuinely important factor in how long you should wait before seeking help:
1. If you're between 20 and 30 years old with no known problems, it's reasonable to expect to wait around 12 months before conceiving. If nothing has happened by then, it's worth approaching your doctor for tests.
2. If you're over 35 and have been trying for six months without success, it's advisable to see your doctor sooner rather than later, since biologically it becomes harder for women over 35 to conceive.
What Happens Next?
If you do go on to have tests, your doctor will arrange a series of investigations to establish what, if any, specific problems exist. Remember, though, that unless you've been trying for at least a year, most doctors won't yet consider fertility investigations. And because it takes two to make a baby, testing (and any subsequent recommendations) should always involve both partners, examined together, rather than one partner being investigated in isolation.
The Bottom Line
Fertility problems are far more common than most people realise, and the causes are rarely simple or single. Whether the cause is ovulatory, tubal, related to endometriosis, connected to male fertility, or genuinely unexplained, understanding where you stand is the first step toward finding the right path forward — whether that's further medical investigation, a natural approach to supporting your fertility, or a combination of both.
This article is for information only and is not intended to be a substitute for medical advice. Always consult a qualified doctor or health practitioner before making changes to your diet or supplement routine.