Infertility means not becoming pregnant after 12 months of regular sex without birth control, or after 6 months if the woman is age 35 or older. Many people first hear about infertility after months of trying, and the main sign is trouble getting pregnant or trouble carrying a pregnancy. Early symptoms of infertility are often subtle, though some people also notice irregular periods, pelvic pain, or sexual problems depending on the cause. Infertility can affect women, men, or both partners, and it may be temporary or long lasting. It does not usually shorten life, and treatment often includes lifestyle changes, medicines, surgery, or fertility care such as insemination or in vitro fertilization.
How many people live with Infertility?
Worldwide, infertility is often estimated to affect about 186 million people, although exact totals can vary depending on how infertility is defined and measured (World Health Organization, 2020). In the United States, about 6.7 million women ages 15 to 44 are estimated to live with infertility or have trouble getting or staying pregnant (Office on Women's Health, 2021).
Overview
InfertilitySymptoms
Infertility means not getting pregnant after trying for a year, or after 6 months if the woman is 35 or older. Many with infertility have no clear symptoms, though some notice irregular periods, pelvic pain, or sexual problems.
Outlook and prognosis
Infertility can be temporary, treatable, or long term, depending on the cause. Many people with infertility conceive with medication, surgery, or assisted reproduction, while others build families in different ways. The outlook varies with age, sperm and egg health, and any underlying condition.
Causes and risk factors
Infertility can result from problems with ovulation, sperm, the uterus, fallopian tubes, or hormones. Risk rises with age, smoking, heavy alcohol use, obesity, sexually transmitted infections, and some medicines or cancer treatments. Genes and conditions like endometriosis also matter.
Genetic influences
Genetics can play an important role in infertility, though it is not the cause for everyone. Some inherited changes can affect egg or sperm development, hormone signals, or reproductive organs, and genetic testing may help explain some cases.
Diagnosis
Infertility is diagnosed after a medical history, physical exam, and fertility testing when pregnancy has not happened after the usual time trying. Diagnosis of infertility may include semen testing, ovulation checks, hormone blood tests, and imaging.
Treatment and drugs
Infertility treatment depends on the cause and may include timing sex around ovulation, medicines to help ovulation, surgery for blocked tubes or varicoceles, or assisted reproduction such as IVF. Many living with infertility use a mix of medical care and emotional support.
Symptoms
Infertility often becomes noticeable when pregnancy does not happen after months of trying, even when sex is regular and no birth control is used. The early symptoms of infertility are often subtle, and many people have no obvious warning signs at all. For many people with infertility, clues come from menstrual changes, pelvic pain, sexual problems, or hormone-related body changes. Trouble staying pregnant can also be part of infertility.
The main symptom of infertility is not getting pregnant after 12 months of regular sex without birth control. If the woman is age 35 or older, doctors usually suggest evaluation after 6 months instead.
Periods that come very far apart, stop completely, or change a lot from month to month can point to problems with ovulation, which is when an egg is released. Some people find their cycle is so unpredictable that it is hard to know when pregnancy is most likely.
Strong period cramps, ongoing pelvic pain, or pain during sex can be a clue to conditions that affect fertility, including endometriosis. In infertility, these symptoms may also make intimacy harder and add stress to trying for pregnancy.
Very heavy periods, bleeding between periods, or unexpected spotting can suggest hormone problems or changes in the uterus. These symptoms do not always mean infertility, but they can go along with it.
How people usually first notice Infertility?
For many people, infertility is first noticed quietly: month after month passes, sex is regular and unprotected, and pregnancy does not happen. In general, doctors start evaluating this after 12 months if you are younger than 35, or after 6 months if you are 35 or older, and some people notice earlier clues such as very irregular or absent periods, pelvic pain, erectile problems, trouble with ejaculation, or a known history of endometriosis, sexually transmitted infections, testicular problems, or prior cancer treatment. Because infertility often has no obvious daily symptoms, how infertility is first noticed is usually the absence of pregnancy over time rather than a sudden warning sign, and that is often the point when reaching out for medical advice can help.
Types of Infertility
Infertility can show up in different ways, and the day-to-day experience often depends on whether pregnancy has happened before or whether a clear cause is found. Symptoms don’t always look the same for everyone. In many living with infertility, the main sign is trouble getting pregnant after trying for a period of time, while some also notice changes such as irregular periods, pelvic pain, sexual problems, or no obvious symptoms at all. When people ask about the types of infertility, doctors usually mean these common patterns.
Primary infertility
This means pregnancy has never happened, despite regular sex without birth control over time. Many people have no other symptoms, but some may notice irregular periods, very painful periods, or signs of hormone imbalance that can point to an underlying cause.
Secondary infertility
This means getting pregnant is difficult after at least one previous pregnancy. For many, this can feel especially confusing because fertility may have changed after a birth, miscarriage, surgery, increasing age, or a new health problem.
Unexplained infertility
In this type, standard testing does not find a clear reason for the fertility problem. People often feel physically well, and there may be no obvious early symptoms of infertility beyond not conceiving when expected.
Combined infertility
This is when factors affecting fertility are found in both partners rather than just one. Symptoms can be mixed, such as irregular ovulation in one partner and low sperm count or sexual-function concerns in the other.
Can I slow down the onset of symptoms?
Not in a reliable way: there is no proven method that can meaningfully delay the start of infertility for everyone, and lifestyle changes cannot stop the natural age-related drop in fertility, especially for women. Still, not smoking, keeping weight in a healthy range, limiting alcohol, avoiding sexually transmitted infections, and getting problems like irregular periods, pelvic infections, diabetes, or hormone issues treated early may help lower the risk of fertility problems, but that is not the same as preventing infertility. If you are trying to get pregnant, getting checked after 12 months, or after 6 months if the woman is age 35 or older, can help find problems sooner and open up options early, and while none of this can promise future fertility, it can help you protect the fertility you have.
What genetics can tell you about symptoms
Genetics can sometimes help explain infertility, but it usually does not predict day-to-day symptoms in a simple way because infertility itself is a broad condition with many possible causes. Certain genetic changes are linked to problems with egg development, sperm production, hormone signaling, or reproductive anatomy, and these can influence whether infertility shows up earlier in life, how severe it is, or whether it happens along with features such as absent periods, very low sperm counts, or early menopause. Even so, many people living with infertility have no clear genetic finding, so genetic results are usually just one piece of the picture rather than a full forecast of symptoms.
Causes and risk factors
Infertility can happen when egg release, sperm quality, the uterus, or the fallopian tubes are affected. Age is a major risk factor, and hormone problems, endometriosis, fibroids, past infections, or surgery can also play a role. In men, low sperm count, testicle problems, enlarged veins around the testicle, or certain medicines may raise the risk. It’s rarely just one factor—it’s the mix that matters. Smoking, heavy alcohol use, obesity, being very underweight, exposure to heat, radiation, or some chemicals, and family history or genetic conditions are among the common causes of infertility.
What are the most common causes or risk factors?
Common causes of infertility include trouble releasing an egg each month, blocked or damaged tubes that carry the egg, and sperm problems such as a low sperm count or sperm that do not move well. The most important risk factors are getting older, untreated sexually transmitted infections, endometriosis, hormone problems, smoking, heavy alcohol or drug use, being very overweight or underweight, and some long-term health conditions or cancer treatments. In some people, inherited gene or chromosome changes can also affect the ovaries, the testes, or the body’s ability to make healthy eggs or sperm.
Environmental and biological risk factors
Infertility can be influenced by changes in the reproductive organs, hormones, or sperm, as well as certain medical treatments and exposures. Doctors often group risks into internal (biological) and external (environmental). Understanding risk factors for infertility in women and men can help guide when to seek care.
Female fertility falls more quickly with age, especially after 35, because both egg number and egg quality decline. Male fertility also tends to drop more gradually over time, which can raise the risk of infertility and miscarriage.
Problems that affect ovulation, such as polycystic ovary syndrome, thyroid disease, or high prolactin levels, can make it harder to release an egg regularly. When ovulation is irregular or absent, pregnancy is less likely each month.
Blocked fallopian tubes, endometriosis, and scarring in the pelvis can keep sperm and egg from meeting. These are well-known biological causes of infertility, even when periods seem otherwise normal.
Fibroids that change the shape of the uterus, uterine polyps, or scar tissue inside the womb can make implantation harder. Some may also raise the chance of repeated pregnancy loss rather than preventing conception completely.
Genetic risk factors
Difficulty getting pregnant can sometimes trace back to changes in chromosomes or genes that affect how eggs, sperm, hormones, or reproductive organs develop. Some risk factors are inherited through our genes. In infertility, the genetic causes of infertility can be obvious, such as a chromosome difference found on testing, or more subtle and found only after fertility problems or recurrent miscarriages. The exact role of genetics varies, and some people never find one single genetic explanation.
Chromosome differences: Changes in the number or structure of chromosomes can lower fertility by affecting egg or sperm production. Examples include an extra X chromosome in some men or a missing or altered X chromosome in some women.
Y chromosome deletions: Small missing pieces of the Y chromosome can greatly reduce sperm production or lead to no sperm in the semen. These changes are a well-known genetic cause of male infertility and may be found during fertility testing.
CFTR gene changes: Changes in the CFTR gene can cause the sperm-carrying tubes to be missing from birth, even when sperm are still made in the testicles. This can lead to infertility without the usual day-to-day signs people often link with cystic fibrosis.
Fragile X premutation: A Fragile X premutation can raise the chance of the ovaries stopping earlier than expected. Many living with this change have a lower egg supply and may go through menopause at a younger age.
Balanced translocations: Sometimes all the genetic material is present but arranged differently between chromosomes. Someone may feel completely healthy yet have trouble conceiving or have recurrent miscarriages because embryos can receive an unbalanced set of chromosomes.
Hormone-signal genes: Rare inherited gene changes that control puberty and reproductive hormones can disrupt ovulation or sperm production. In some families, infertility appears alongside delayed puberty, absent periods, or unusually low sex hormone levels.
Family history: A close family history of early menopause, absent periods, very low sperm counts, or a known inherited condition can point to a higher genetic risk for infertility. This does not mean infertility will definitely happen, but it can help guide testing and care.
Lifestyle risk factors
Some daily habits can lower fertility in women, men, or both, even when no single cause is obvious. Understanding lifestyle risk factors for infertility can help people identify modifiable factors that affect ovulation, sperm quality, hormone balance, sexual function, and the chances of conception. These factors do not explain every case, but they can meaningfully influence how easily pregnancy occurs.
Both obesity and being underweight can disrupt hormone signaling and make ovulation less regular or stop it altogether. In men, excess body fat is linked to lower testosterone, poorer sperm quality, and reduced fertility.
Diets high in ultra-processed foods, trans fats, and excess added sugar may worsen insulin resistance and inflammation, which can interfere with ovulation and reproductive hormones. Poor overall nutrition can also affect sperm count, movement, and DNA quality.
Moderate regular exercise can support metabolic health and hormone balance, which may improve fertility in some people. Very intense training with low energy intake, however, can suppress ovulation and reduce reproductive function.
Tobacco use is associated with reduced ovarian reserve, earlier menopause, and a lower chance of conception. In men, smoking can lower sperm count, reduce sperm movement, and increase sperm DNA damage.
Risk prevention
Infertility can affect everyday life in quiet, stressful ways, like months of trying to conceive without success or realizing periods have become irregular. Not all infertility can be prevented, because age, genetics, and some medical conditions are outside anyone’s control, but many risks can be lowered. Prevention is about lowering risk, not eliminating it completely. For many, this means protecting reproductive health early, before fertility problems become harder to reverse.
Sexually transmitted infections such as chlamydia and gonorrhea can scar the reproductive organs and raise the risk of infertility. Using condoms, getting tested when needed, and treating infections early can help protect fertility in both men and women.
Being very underweight or overweight can disrupt ovulation, hormones, and sperm quality. Steady habits around food, movement, and sleep may lower the risk of infertility and improve the chances of a healthy pregnancy later.
Smoking can damage eggs, sperm, and the reproductive organs, and it may also bring menopause earlier. Avoiding tobacco and secondhand smoke is one of the clearest ways to protect long-term fertility.
Heavy alcohol use and recreational drugs can affect hormone levels, ovulation, and sperm production. Keeping alcohol moderate or avoiding it, and not using illicit drugs or anabolic steroids, can reduce preventable fertility problems.
Can you prevent Infertility?
Infertility cannot always be prevented, because some causes are present from birth or happen for reasons no one can control. But some risks can be lowered by protecting against sexually transmitted infections, not smoking, limiting alcohol and drug use, keeping a healthy weight, and getting help early for problems like very painful periods, irregular periods, or past infections. Even when you do everything right, infertility can still still happen, so prevention is only partly possible.
Transmission
Infertility is not infectious, so you cannot catch it from a partner, family member, or anyone else through sex, kissing, touching, or sharing a home. For many, this can be reassuring: infertility itself does not spread from person to person.
Some causes of infertility can run in families, which is why people sometimes ask about how infertility is inherited; when that happens, it is usually an underlying condition, such as certain hormone problems, chromosome changes, or differences in the reproductive organs, that may be passed down rather than infertility itself. Infections that affect the reproductive system, including some sexually transmitted infections, can sometimes lead to fertility problems, but that is different from infertility being contagious.
When to test your genes
Consider genetic testing if infertility is unexplained, if there is recurrent pregnancy loss, very low sperm counts, no sperm in the semen, primary ovarian insufficiency, or a family history of early menopause, birth differences, or known inherited conditions. Results can sometimes guide treatment and clarify risks for future children.
Diagnosis
For many, the first step comes when everyday activities start feeling harder, especially when months of trying to get pregnant have not led to a pregnancy. The diagnosis of infertility usually begins after 12 months of regular sex without birth control, or after 6 months if the woman is age 35 or older. Doctors look at both partners because infertility can relate to eggs, sperm, the uterus, the fallopian tubes, hormones, timing, or more than one factor at the same time.
Doctors ask about menstrual cycles, past pregnancies, pelvic pain, surgeries, sexual history, and how long you have been trying to conceive. A detailed family and health history can help point to hormone problems, endometriosis, prior infections, or inherited conditions that may affect fertility.
A general and reproductive exam can look for clues such as thyroid changes, excess hair growth, breast discharge, testicular changes, or signs of infection. These findings can help show whether infertility may be linked to hormone imbalance or structural problems.
Blood and sometimes urine tests can show whether ovulation is happening and whether hormone levels are in a normal range. Doctors may check progesterone after ovulation and may also measure thyroid and prolactin levels because these can affect fertility.
Blood tests and ultrasound can estimate the number of eggs remaining and how the ovaries may respond to treatment. This is not a direct count of fertility, but it can be an important part of how infertility is diagnosed in women.
How is Infertility diagnosed?
Infertility is usually diagnosed when pregnancy has not happened after 12 months of regular sex without birth control, or after 6 months if the woman is age 35 or older. Doctors usually evaluate both partners and may use a health history, a physical exam, semen testing, blood tests to check hormone levels and whether eggs are being released, and an ultrasound or other imaging to look for problems in the womb, ovaries, or the tubes that carry the egg. Genetic testing is not needed for everyone, but it may be helpful in some cases, such as very low sperm count, repeated pregnancy loss, or a strong family history of an inherited condition.
Stages of Infertility
Infertility does not have defined progression stages. That is because infertility is usually identified by difficulty getting pregnant over time rather than by a steady pattern of worsening symptoms. Doctors usually start with a conversation about how long pregnancy has been attempted, menstrual cycles, sexual health, past pregnancies, and any medical issues that could affect fertility. To understand how infertility is diagnosed, they may also suggest hormone tests, semen analysis, and imaging or other exams to check whether ovulation, sperm, the uterus, and the fallopian tubes are working as expected.
Outlook and prognosis
The outlook for infertility varies widely and depends on the cause, the age of the partners, how long conception has been difficult, and access to effective treatment. Many people with infertility do eventually conceive, either naturally or with interventions such as medication, surgery, intrauterine insemination, or in vitro fertilization, but success rates decline with increasing maternal age and with some severe male or female factor causes. Prognosis is generally better when a reversible cause is found, such as ovulation problems or certain structural abnormalities, and less favorable when ovarian reserve is very low, sperm production is severely impaired, or infertility has persisted for many years. Infertility itself usually does not increase mortality, but some underlying causes, including endocrine disorders, cancer treatments, or genetic conditions, may affect overall health and long-term outcomes. Even when pregnancy is achieved, some people remain at higher risk for miscarriage or pregnancy complications depending on the underlying diagnosis. Because infertility can also have substantial emotional and relationship effects, timely evaluation and individualized care often improve both reproductive prospects and quality of life.
Long-term effects
For many, infertility reaches far beyond trying to conceive and can affect emotional health, relationships, work, and long-term plans. Long-term effects vary widely, depending on the cause of infertility, how long it lasts, and whether treatment is needed. Some people living with infertility eventually become pregnant, while others may face ongoing uncertainty or permanent changes in family planning.
Infertility can be linked with long-lasting stress, sadness, anxiety, or grief, especially when each month brings another disappointment. Many people notice small adjustments—like avoiding baby showers or feeling tense around pregnancy news—as the strain builds over time.
Infertility can put pressure on a couple's relationship, including communication, intimacy, and shared decision-making. Partners may cope differently, which can lead to distance, conflict, or guilt even when both want the same outcome.
When sex becomes tied to ovulation timing, it can start to feel scheduled rather than spontaneous. Over time, some people with infertility notice lower desire, frustration, or trouble enjoying intimacy.
Fertility treatment can bring repeated appointments, hormone side effects, and the stress of waiting for results. The long-term effects of infertility may also include exhaustion from months or years of testing, procedures, or cycles that do not work.
How is it to live with Infertility?
Living with infertility can feel like carrying a private grief through ordinary days, especially when plans for sex, timing, medical visits, and uncertainty begin to shape your routine. For many people with infertility, the strain is not only physical but emotional, with stress, sadness, frustration, and strain on intimacy or self-image often becoming part of daily life, even though experiences vary widely from person to person. Partners, family, and close friends may feel the ripple effects too, as relationships can be tested by repeated disappointments, difficult decisions, financial pressure from treatment, and the challenge of knowing what to say, but open support and good care can make that path feel less isolating.
Treatment and drugs
Infertility can affect daily life in quiet but heavy ways, from timing sex around fertile days to feeling worn out by repeated appointments and uncertainty about what comes next. Treatment for infertility depends on the cause and may include lifestyle changes, medicines to help ovulation, treatment for hormone problems or infections, surgery for problems such as blocked tubes or varicoceles, and fertility procedures such as insemination or in vitro fertilization. Doctors sometimes recommend a combination of lifestyle changes and drugs. Not every treatment works the same way for every person, and factors like age, egg and sperm health, how long infertility has lasted, and any underlying medical conditions all matter. If you are wondering about the best treatment for infertility, a fertility specialist can explain the options, likely success rates, side effects, and costs so you can decide what fits your goals and values.
Can you cure Infertility?
Infertility is not something with one simple cure, because it can have many different causes in women, men, or both partners. In some cases, treating the underlying problem, such as a hormone issue, blocked tubes, low sperm count, or a health condition, can improve the chances of pregnancy. When it cannot be fully fixed, treatment may still help many people conceive through medicines, surgery, or fertility treatments like IVF.
Non-drug treatment
Infertility can affect daily life in quiet but stressful ways, from planning sex around a calendar to feeling worn down by repeated disappointment. Non-drug treatment for infertility often focuses on improving the chances of conception, finding and fixing physical problems, and reducing the strain the process can place on both partners. The best approach depends on the cause, age, how long pregnancy has been difficult, and whether infertility affects eggs, sperm, the uterus, the fallopian tubes, or more than one area. Not every approach works the same way, so care is usually tailored to your situation.
Tracking ovulation with calendar methods, temperature checks, or urine ovulation tests can help time sex for the days when pregnancy is most likely. For many, treatment begins not at the pharmacy, but with learning when the fertile window happens each month.
Having sex every 1 to 2 days during the fertile window can improve the chance of sperm being present when an egg is released. This can be especially helpful for couples who are unsure about the best timing or have irregular patterns from month to month.
Reaching a healthy weight can improve ovulation in some women and may also support sperm quality in men. Regular moderate activity and steady eating habits often help, while very intense exercise or major weight swings can make infertility worse for some people.
Stopping smoking and avoiding secondhand smoke can improve fertility for both women and men. Limiting alcohol and avoiding recreational drugs may also help, since these can affect ovulation, sperm count, and sperm movement.
Your genes may have an impact on how drugs work for you
Genes can help explain why fertility medicines do not work the same way for everyone: some people with infertility respond strongly to hormone shots or pills used to help the ovaries release or mature eggs, while others may need a different dose or may not respond as well. In everyday life, this can look like one person getting a good number of eggs after treatment, while another has a weak response or more side effects even when the plan seems similar. This kind of gene-and-medicine matching is part of what is called pharmacogenomics, but for infertility it is still an emerging area and is not yet a routine part of care for most people.
Pharmacological treatments
Treatment for infertility depends on why pregnancy is not happening, whether ovulation is regular, and whether the issue mainly affects egg release, sperm production, or hormone balance. Common infertility medications aim to trigger ovulation, support hormone signals from the brain, or lower hormones that interfere with fertility. Not everyone responds to the same medication in the same way. Some drugs are used alone, while others are combined with procedures such as intrauterine insemination or in vitro fertilization.
Clomiphene citrate is a common first treatment for infertility when ovulation is irregular or absent. It helps the brain send a stronger signal to the ovaries so an egg can mature and be released. It is often used in people with polycystic ovary syndrome or unexplained infertility.
Letrozole is another widely used ovulation medicine and is often preferred for infertility related to polycystic ovary syndrome. It lowers estrogen briefly, which prompts the brain to increase hormones that stimulate the ovaries. Many people taking infertility medication start with letrozole because it can work well with a lower chance of multiple pregnancy than some older options.
Gonadotropins such as follicle-stimulating hormone and luteinizing hormone are injectable fertility drugs that directly stimulate the ovaries. They are often used when tablets have not worked or when treatment is combined with insemination or IVF. Because they can overstimulate the ovaries and raise the chance of twins or more, close ultrasound and blood test monitoring is needed.
Human chorionic gonadotropin, often called hCG, is used as a trigger shot to help release a mature egg at the right time. This can make timing intercourse, insemination, or egg collection more precise. It is usually given along with other fertility medicines rather than on its own.
Genetic influences
For some people living with infertility, genes can affect how eggs, sperm, hormones, or the reproductive organs develop and work. Changes in genes or chromosomes may lower egg supply, disrupt ovulation, reduce sperm production, or affect the tubes and ducts needed for reproduction, which is why doctors sometimes look for possible genetic causes of infertility. Family history is one of the strongest clues to a genetic influence. For many, this question comes up after learning that close relatives also had trouble conceiving or went through menopause unusually early. Genetic testing may be suggested when periods never started, menopause happens early, sperm counts are extremely low, or other findings point to an inherited cause, because the results can help guide treatment and future family planning. Even so, infertility often has more than one cause, and many people with infertility do not have a single gene change that explains it.
Is Infertility genetic?
Genetics can play an important role in infertility, though it is not the cause for everyone. Some inherited changes can affect egg or sperm development, hormone signals, or reproductive organs, and genetic testing may help explain some cases.
Having a genetic risk is not necessarily a diagnosis
Genetic variants are a common and normal part of being human, and they are found throughout the general population. Most of these variants do not directly affect health and simply reflect natural differences among people. In many genes, having a variant connected with a condition points to a possible link rather than a certain diagnosis, particularly when more than one gene and outside factors also play a role. In some situations, though, one well-studied variant in a particular gene is enough to confirm the diagnosis.
Pharmacogenetics—how genetics influence drug effects
During fertility treatment, one person may produce several eggs on a standard dose, while another needs a higher dose or a different plan. Part of that difference can come from genetics, because inherited changes may affect hormone receptors and the way the body handles medicines used for infertility. Not every difference in response is genetic, but genes can help explain why some people with infertility respond strongly to ovulation-stimulating drugs, while others have less benefit or more side effects. This can matter with treatments used for ovulation induction or IVF, where medication doses often need careful adjustment to avoid too little response or, less often, overstimulation. Genetics can also shape treatment in another way, since some inherited causes of infertility make certain options more or less likely to help and may lead doctors to suggest genetic counseling or testing before assisted reproduction. For now, pharmacogenetic testing is not routine in infertility care, so doctors usually personalize treatment by combining family history, hormone levels, ultrasound findings, semen results, and past medication response as they learn how genetics affect fertility medication response.
Interactions with other conditions
Infertility often sits alongside other health conditions, which can make it harder to sort out what is affecting conception and overall well-being. In women, conditions such as polycystic ovary syndrome, endometriosis, thyroid disease, diabetes, and obesity can disrupt ovulation or make pregnancy less likely, while in men, hormone problems, diabetes, genetic conditions, and infections can affect sperm production or sexual function. Some people also learn that infertility is linked with conditions outside the reproductive system, such as autoimmune disease or untreated celiac disease, where ongoing inflammation or nutrient problems may play a role. Having more than one diagnosis can make symptoms feel harder to untangle. For example, someone might seek help for irregular periods, pelvic pain, or erection problems and only later find that infertility is part of a broader health picture. Because infertility can interact with both physical and mental health, anxiety, depression, and chronic stress may also add strain, even though they are usually not the sole cause, so looking at the whole person is an important part of care.
How genes can cause diseases
Humans have more than 20,000 genes, each carrying out one or a few specific functions in the body. One gene instructs the body to digest lactose from milk, another tells the body how to build strong bones and another prevents the body's cells from beginning to multiply uncontrollably and developing into cancer. As all of these genes combined are the building instructions for our body, a defect in one of these genes can have severe health consequences.
Through decades of genetic research, we know the genetic code of any healthy/functional human gene. We have also identified that in certain positions on a gene, some individuals may have a different genetic letter from the one you have. We call these hotspots "Genetic Variations" or "Variants" in short. In many cases, studies have been able to show that having the genetic letter "G" in the position makes you healthy, but having the letter "A" in the same position disrupts the gene function and causes a disease. Genopedia allows you to view these variants in genes and summarizes all that we know from scientific research, which genetic letters (Genotype) have good or bad consequences on your health or on your traits.
What other conditions can cause similar symptoms to Infertility?
Trouble getting pregnant can be caused by several common health problems, including irregular or missing egg release, blocked tubes between the ovaries and womb, tissue growing outside the womb lining, thyroid or other hormone problems, and sperm problems such as a low sperm count or poor sperm movement. Sometimes repeated miscarriage, pain during sex, or erection and ejaculation problems can seem like infertility too, so doctors usually check both partners to look for the real cause.
History
Infertility has been part of human life for as long as people have recorded family histories, but the way it was understood has changed a great deal. In many times and places, the burden was placed mostly on women, even though modern medicine shows that fertility problems can affect men, women, or both partners. For many, this history helps explain why infertility can still carry shame or misunderstanding today.
Across cultures and time periods, people linked the ability to have children with health, identity, marriage, and social standing. Older medical writings described missed pregnancies, repeated pregnancy loss, or difficulty conceiving after a year of trying, but they could not clearly separate the many possible causes. A couple might have been seen as simply “childless,” without any way to tell whether the issue involved ovulation, sperm, the uterus, the fallopian tubes, hormones, or another health condition.
As medical science evolved, doctors began to study reproduction more directly. Over the 18th and 19th centuries, better knowledge of anatomy and menstruation improved understanding of female fertility, and later work on semen and sperm made it clear that male infertility was also common. By the 20th century, infertility was increasingly treated as a medical condition rather than a personal failing or moral issue.
Progress sped up in the later 1900s. Hormone testing, imaging, laparoscopy, semen analysis, and treatments to help ovulation gave doctors more ways to find the cause of infertility. In 1978, the first baby conceived through in vitro fertilization, or IVF, was born, marking a major turning point for many living with infertility who had few options before then.
In recent decades, awareness has grown around the emotional side of infertility as well as the medical side. Researchers have learned more about age-related fertility decline, endometriosis, polycystic ovary syndrome, blocked tubes, low sperm count, and unexplained infertility, and they have also recognized that same-sex couples and single people may need fertility care for different reasons. Today, care is more individualized, and the early symptoms of infertility are understood in a broader, more accurate way than in the past, though access to testing and treatment still varies widely from one place to another.