Infertility: Causes, Symptoms & Latest Fertility Treatments Explained

Facing uncertainty about the road ahead is completely normal when you’re dealing with infertility mentally and physically. Whether this is your very first attempt at conceiving or you’ve been through multiple miscarriages, the path to parenthood can feel daunting and, at times, confusing. But here’s the reassuring truth: with the right diagnosis and treatment, a large number of women and couples do go on to have the child they’re hoping for. This guide walks through the most common causes of infertility, the latest treatments available, and practical ways to improve your chances of conception.

How Common Is Infertility?

Infertility is far more common than most people realise. According to the World Health Organisation, roughly 1 in 6 people globally about 17.5% of adults experience infertility at some point. In India, prevalence estimates range from 3.7% to 16.8%, varying by region and how long a couple has been trying. Male infertility alone accounts for an estimated 10-15% of cases, which is a helpful reminder that this is never automatically “just a women’s issue.” According to the World Health Organization (WHO), infertility affects approximately 1 in 6 people globally, making it one of the most common reproductive health conditions worldwide.

What Causes Infertility?

A couple is generally considered infertile if they haven’t conceived after a year of regular, unprotected intercourse — or after six months if the woman is 35 or older, since fertility naturally declines faster past this age. Both men and women can be the reason a couple struggles to conceive, and several factors can be at play:

• Ovulatory disorders: Conditions like PCOS, hypothyroidism, or early menopause can disrupt ovulation, making conception harder.
• Blocked fallopian tubes: Endometriosis and other conditions can physically block the tubes, preventing sperm from reaching the egg.
• Male factor infertility: Poor sperm quality, low sperm count, or motility issues are responsible for a significant share of cases.
• Age: Female fertility declines noticeably after 35, as both the number and quality of eggs decrease over time.

A Closer Look at Male Infertility Causes

Male infertility deserves more attention than it usually gets, since it contributes to roughly a third of all infertility cases:

• Low or absent sperm production, reducing the odds of fertilization
• Abnormal sperm function — if sperm can’t swim or penetrate the egg properly, fertilization simply doesn’t happen
• Varicocele — enlarged veins around the testes, one of the most common and treatable causes of male infertility
• Hormone disorders affecting sperm production
• Chromosome defects or birth defects affecting the reproductive system
• Immune system issues, where the body produces antisperm antibodies that attack sperm cells

A Closer Look at Female Infertility Causes

• Ovulation problems, where the body doesn’t produce enough hormones to mature and release an egg
• Anatomical issues, most commonly a blocked fallopian tube, or scar tissue from past surgery or infection
• Endometriosis, which can affect ovarian function, hormone balance, and how well an embryo implants
• Infections like pelvic inflammatory disease (PID), caused by bacteria such as gonorrhoea or chlamydia, which can scar the fallopian tubes and raise the risk of ectopic pregnancy
• Immune system problems, including antibodies that interfere with pregnancy or attack sperm

Types of Infertility

Infertility is broadly classified into two types:

• Primary Infertility: A couple has never achieved pregnancy despite trying for at least a year with regular, unprotected intercourse.
• Secondary Infertility: A couple has conceived before but is now struggling to conceive again.

Sterility vs. Infertility: What’s the Difference?

These two terms often get used interchangeably, but they’re not quite the same thing. Sterility is a permanent, irreversible inability to conceive, usually caused by a fixed medical condition, with no available treatment to reverse it. Infertility, on the other hand, is often temporary or treatable — many causes respond well to medication, surgery, or assisted reproductive technologies, meaning conception is still very much possible with the right medical support.

Symptoms of Infertility

The main sign of infertility is, of course, the inability to conceive after regular, unprotected intercourse. But there are other signals worth paying attention to:

In women:

• Irregular or absent menstrual periods
• Painful periods
• Pelvic pain
• Difficulty maintaining a pregnancy

Signs linked to hormonal imbalance in women:

• Increased acne
• Changes in sexual desire
• Dark hair growth on the lips, chin, or chest
• Hair thinning or loss
• Unexplained weight gain

In men:

• Low libido
• Erectile or ejaculation difficulties
• Pain or swelling in the testicles
• Reduced facial or body hair
• Changes in semen quality

Risk Factors for Infertility

Previous chemotherapy or radiation therapy may also reduce fertility in both men and women.

General risk factors (both partners):

• Age above 35 in women
• Smoking and excessive alcohol consumption
• Obesity or being underweight
• Poor nutrition
• Chronic stress
• Diabetes and thyroid disorders
• Sexually transmitted infections (STIs)
• Endometriosis or PCOS
• Exposure to environmental toxins and chemicals
• Previous pelvic or reproductive surgeries

Additional risk factors specific to men:

• Frequent hot baths, saunas, or resting a laptop directly on the lap all of which can raise testicular temperature and affect sperm production
• History of hernia repair surgery
• Undescended testicles
• Mumps infection after puberty
• Exposure to workplace toxins like radiation, welding fumes, or industrial chemicals

Latest Treatments for Infertility

Treatment depends entirely on the underlying cause, and there’s a wide range of options today:

• Ovulation induction: Medications like Clomiphene Citrate, Letrozole, or Gonadotropins help trigger ovulation in women with ovulatory disorders.
• Intrauterine Insemination (IUI): Places specially prepared sperm directly into the uterus during ovulation, bypassing issues with the cervix or fallopian tubes.
• In Vitro Fertilization (IVF): Eggs are fertilized outside the body and then transferred into the uterus. IVF has a success rate of around 40% for women under 35, with success naturally declining with age.
• Intracytoplasmic Sperm Injection (ICSI): A single sperm is injected directly into an egg — often used for male factor infertility.

Depending on the cause, treatment may also include:

• Hormonal therapy
• Antibiotics for infections
• Surgical correction of endometriosis, fibroids, or blocked fallopian tubes
• Varicocele repair in men
• Donor eggs, donor sperm, or surrogacy in select cases

Emotional Support During Infertility

Infertility takes a real toll on emotional wellbeing, relationships, and mental health stress, anxiety, frustration, and low mood are all common experiences on this journey, and none of them mean you’re handling it “wrong.” Counselling, support groups, mindfulness practices, and honest communication between partners can make a meaningful difference in coping through treatment and the waiting that comes with it.

Diagnosis of Infertility

Diagnosing infertility means evaluating both partners together, since the cause can lie with either — or both.

For women: hormone testing, ovulation tracking, pelvic ultrasound, hysterosalpingography (HSG), or laparoscopy.

For men: semen analysis (checking sperm count, motility, and shape), hormone testing, scrotal ultrasound, and genetic testing where indicated. 

Your fertility specialist may also recommend blood tests to evaluate hormone levels such as FSH, LH, AMH, prolactin, thyroid hormones, and estrogen depending on your symptoms.

Lifestyle Changes That May Improve Fertility

• Maintain a healthy body weight
• Eat a balanced, nutrient-rich diet foods high in antioxidants like leafy greens, berries, nuts, and fatty fish genuinely support reproductive health in both partners
• Consider Vitamin E and Vitamin D, both linked with better egg and sperm quality, though it’s worth discussing supplementation with your doctor first
• Exercise regularly, in moderation
• Quit smoking
• Limit alcohol intake
• Manage stress
• Get adequate sleep
• Avoid exposure to environmental toxins

Avoid prolonged exposure to excessive heat, pesticides, heavy metals, and harmful chemicals, as these may negatively affect fertility.

Can Infertility Be Prevented?

Not every case can be prevented, but healthy habits genuinely lower the risk:

• Maintain a healthy weight
• Avoid smoking and excessive alcohol
• Treat sexually transmitted infections promptly
• Exercise regularly
• Manage chronic medical conditions like diabetes and thyroid disorders
• Reduce stress
• Schedule regular reproductive health check-ups

Complications of Infertility

Infertility can lead to emotional distress, anxiety, depression, and relationship strain. Treatment itself carries its own considerations assisted reproductive technologies can bring financial burden, and in some cases, complications like multiple pregnancies or ovarian hyperstimulation syndrome (OHSS), where the ovaries become swollen and painful in response to fertility medication.

How HealthPil Can Help

HealthPil offers consultations with knowledgeable fertility specialists who create personalised treatment plans, including IVF and IUI. Arrange a consultation today to begin your path toward parenthood.

When to See a Doctor & Book an Online Consultation

Consult a fertility specialist if:

• You’re under 35 and have been trying to conceive for more than a year
• You’re 35 or older and have been trying for more than six months
• You have irregular, absent, or painful periods
• You’ve experienced recurrent miscarriages
• You’ve been diagnosed with PCOS, endometriosis, thyroid disorders, or PID
• Your partner has low sperm count, poor sperm quality, or other male fertility issues
• You have a history of pelvic surgery, chemotherapy, radiation therapy, or STIs

Early diagnosis and timely treatment genuinely improve your chances of a successful pregnancy. At HealthPil, you can book an online consultation with experienced fertility specialists who will evaluate your symptoms, recommend the right fertility tests, identify the underlying cause, and build a personalised treatment plan around your needs.

Myths About Infertility

Myth: “Infertility is always a woman’s problem.”

Truth: Infertility involves both male and female factors around 30% of cases are due to male infertility alone.

Myth: “If you’ve been trying for a year and haven’t conceived, it’s time to give up.”

Truth: Many couples do conceive even after a year of trying. Once you hit that one-year mark, it’s simply time to see a fertility doctor and explore your options not to give up.

Myth: “IVF guarantees a pregnancy.”

Truth: IVF is highly successful for many, but it’s not guaranteed age, the underlying cause of infertility, and overall health all influence the outcome.

How HealthPil Can Help

HealthPil offers consultations with knowledgeable fertility specialists who create personalised treatment plans, including IVF and IUI. Arrange a consultation today to begin your path toward parenthood.

Summary

Infertility is the inability to conceive after one year of regular, unprotected intercourse (or six months if the woman is over 35). It can affect both men and women and may result from medical conditions, age, or lifestyle factors. Early diagnosis and appropriate treatment including lifestyle changes, medications, surgery, or fertility treatments such as IUI, IVF, and ICSI—can improve the chances of pregnancy. If you’re struggling to conceive, book an online consultation with a HealthPil fertility specialist for personalised evaluation and expert guidance.