Distinguishing Between Sterility and Infertility

The words sterility and infertility are very commonly used terms in reproductive health. Some people use these words interchangeably. However, both have a different meaning.

Sterility means that a person can’t conceive even with the help of different treatment options. A sterile person can never give birth to a biological child.

On the other hand, infertility means that a person fails to conceive after trying for certain periods of time. There is a chance that the person may conceive after that duration, naturally or with the help of treatment options.

Let’s explore different aspects of sterility and infertility in detail:

What is Sterility?

If you are sterile, it means that you can’t conceive a child at all. It can be due to genetic factors or irreversible damage to the reproductive organs [1]. Sterility can affect both men and women.

For example, a man is sterile if there is no sperm production. Sterility infertility in women can be defined as the absence of eggs, blocked fallopian tubes, or permanent damage to the uterus.

Causes of Sterility

Some common causes of sterility and pregnancy losses in females and males are:

• Genetic disorders (e.g., Turner syndrome)
• Complete testicular failure
• Irreversible damage due to untreated sexually transmitted infections
• Surgical removal of reproductive organs
• Damage to the reproductive system by autoimmune disorders

Diagnosis For Sterility

The diagnosis of sterility involves patient history, medical testing, and physical examination.

For example, semen analysis in men can tell if sperm cells are present in the semen. No sperm cells in the semen is an indication the person is sterile.

Treatment for Sterility

Sterility is an irreversible process, which means that a sterile person can’t conceive. No treatment option can help a sterile person give birth to a biological child.

However, treatment options for sterility can focus on improving overall health.

What is Infertility?

World Health Organization (WHO) defines infertility as the inability to conceive after one year of regular, unprotected sexual intercourse or without birth control [2].

The inability to conceive within one year doesn’t mean that you will never be able to conceive.

Unlike sterility, the causes of infertility can be reversed and an infertile person can become able to parent a biological child. Understanding infertility is crucial, especially since many individuals may unknowingly experience early signs of infertility, which can sometimes be addressed with timely medical intervention.

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Difference Between Primary and Secondary Infertility

Primary infertility is a condition where a person is unable to conceive for the first time. This means that a person with primary infertility has no history of conception.

On the other hand, a person with secondary infertility is one with a history of successful pregnancy [3]. The person may not be able to conceive for the second, third, or fourth time for any problem.

Causes of Infertility

Some common causes of infertility in males and females are:

• Polycystic Ovary Syndrome (PCOS)
• Blocked fallopian tubes
• Low sperm count
• Hormonal imbalances
• Poor egg quality
• Poor sperm quality
• Varicocele — enlarged veins in the scrotum

Diagnosis for Infertility

Diagnosis for infertility includes evaluating both partners for potential fertility problems.

For example, diagnosis for female infertility can include hormonal analysis, imaging tests, and physical examination. Similarly, the diagnosis of infertility in males includes semen analysis and evaluation of reproductive structures.

Treatment for Infertility

Some causes of infertility are reversible and you can achieve pregnancy by correcting them. For example, if a male is failing to conceive and the problem is with sperm motility, taking sperm motility supplements can improve sperm motility and increase the chances of successful fertilization.

Similarly, if there is a structural abnormality responsible for infertility, surgery can affect fertility status and improve the chances of conception. If other treatment options fail, the last treatment option for infertile couples is In Vitro Fertilization (IVF).

FAQs

1. What is the difference between sterility and infertility?

Sterility means a person cannot have children at all. Infertility means it's hard to get pregnant but not impossible. Sterility is a permanent condition with no treatment. You can treat infertility depending on the cause.

2. Is sterility always permanent?

Yes, sterility is mostly permanent and there is no treatment for it. It means a person cannot conceive naturally.

The Bottom Line

People often confuse the word sterility and infertility, while both words have different meanings. Sterility means that a person can’t give birth to a biological child at all.

However, infertility doesn’t mean that a person can’t conceive by any means. Many causes of infertility are reversible and a person can correct them by medical management, eating a balanced diet, and improving lifestyle habits.

Resources Used

1. Royfman, R., Shah, T. A., Sindhwani, P., & Nadiminty, N. (2021). Sterility, an Overlooked Health Condition. Women, 1(1), 29-45. https://doi.org/10.3390/women1010003
2. Infertility. (2024b, May 22). https://www.who.int/news-room/fact-sheets/detail/infertility
3. Secondary Infertility. (2024, May 1). Cleveland Clinic. https://my.clevelandclinic.org/health/diseases/21139-secondary-infertility 

Frequently Asked Questions

Q: What is the difference between sterility and infertility?

A: Sterility and infertility are distinct reproductive conditions, though the terms are often confused. Sterility is a permanent condition where a person cannot conceive under any circumstances, even with advanced medical treatments like IVF. Infertility, as defined by the American Society for Reproductive Medicine (ASRM), is the inability to conceive after one year of regular unprotected intercourse (or six months for women over 35), but conception may still be possible through treatment or naturally over time. Understanding this distinction is crucial for determining appropriate treatment options and realistic expectations when seeking to build a family.

Q: Can a sterile person ever become fertile?

A: No, by definition, a sterile person cannot become fertile because sterility is a permanent and irreversible condition. Sterility means that biological conception is impossible regardless of medical intervention or treatment options available. However, it's important to note that many people initially diagnosed as infertile can achieve pregnancy through various treatments, lifestyle modifications, or supplements designed to support reproductive health. If you've been told you're sterile, consulting with a reproductive endocrinologist can help clarify your specific situation and explore all available options for building a family, including adoption or surrogacy.

Q: What percentage of Americans are infertile vs. sterile?

A: According to the CDC, approximately 12% of women aged 15-49 in the United States have difficulty conceiving or carrying a pregnancy to term, which falls under the infertility diagnosis. Sterility is far less common than infertility, as true sterility represents a permanent inability to conceive, while most people diagnosed with infertility have potential treatment options available. The American Society for Reproductive Medicine reports that about 1 in 8 couples struggle with infertility, making it a significant reproductive health concern affecting millions of Americans. For those diagnosed with infertility, various interventions—from lifestyle changes and fertility supplements like Conceive Plus to medical treatments—can improve conception chances.

Q: What causes someone to be born sterile?

A: Several congenital conditions can result in sterility from birth, including Müllerian agenesis (absence of the uterus and fallopian tubes in women) and azoospermia due to underdeveloped reproductive organs in men. Genetic conditions such as Klinefelter syndrome or Turner syndrome can also result in permanent sterility. Other causes of congenital sterility include severe endometriosis present from early reproductive years or structural abnormalities of the reproductive tract that prevent conception entirely. A reproductive health specialist can perform diagnostic testing to determine whether a condition is truly sterility or infertility, as this distinction significantly impacts treatment planning and prognosis.

Q: How do doctors test for sterility versus infertility?

A: Doctors use a combination of diagnostic tests to differentiate between sterility and infertility, including semen analysis for men, hormone level testing, imaging studies like ultrasounds or HSG (hysterosalpingogram) for women, and sometimes genetic testing. For women, a diagnosis of infertility typically requires one year of unsuccessful conception attempts (six months if over 35), whereas sterility is determined when testing reveals structural or genetic impossibilities for conception. Men may be diagnosed with sterility if semen analysis shows zero sperm production (azoospermia) that cannot be reversed, compared to low sperm count or motility issues that may respond to treatment or supplements. Once your specific diagnosis is confirmed, your fertility specialist can recommend an appropriate treatment plan, whether that includes lifestyle modifications, medical interventions, or supportive supplements to optimize your reproductive health.