Overcoming Infertility
What Are the Common Causes of Infertility?
When a couple is facing difficulties conceiving, one of the most pressing questions is: why?
Infertility is typically defined based on the length of time a couple has been trying to conceive. Primary infertility refers to the inability to achieve pregnancy after one year of regular, unprotected intercourse. Secondary infertility describes the difficulty in becoming pregnant again after previously having one or more children.
However, infertility is a complex and multifactorial condition. Determining the specific cause in each case requires a thorough evaluation of both partners and a deeper understanding of the underlying medical, hormonal, and lifestyle factors.
A wide range of conditions can affect fertility in both men and women, including hormonal imbalances, structural abnormalities, genetic factors, and overall reproductive health.
It is important to know that you are not alone. Infertility affects approximately 1 in 6 individuals of reproductive age. Fortunately, advances in modern reproductive medicine have significantly improved our understanding of these conditions. Today, a variety of effective treatments and interventions are available, helping many individuals and couples successfully achieve pregnancy.
Common Fertility Issues in Men
Infertility is not only a female concern—male factors contribute to about one-third of all infertility cases.
Most male infertility is related to sperm production, quality, or delivery. In some cases, physical or medical conditions may also affect ejaculation and fertility.
Here are some of the most common causes:
- Azoospermia
A condition where no sperm is found in the semen. This may be due to a lack of sperm production or a blockage preventing sperm from reaching the ejaculate.
- Low Sperm Count (Oligospermia)
Occurs when the number of sperm in the semen is lower than normal. This can reduce the chances of fertilization. - Congenital Absence of the Vas Deferens
A condition present at birth where the tubes that carry sperm are missing. Sperm may still be produced, but cannot be released. - Varicocele
Enlarged veins in the scrotum that can affect sperm production and quality.
Previous Vasectomy
Men who have had a vasectomy may require a reversal procedure or assisted reproductive options if they wish to conceive again.
Common Causes of Infertility in Women
Female infertility can be caused by a variety of factors, and in many cases, more than one condition may be involved. Some women may have difficulty becoming pregnant, while others may experience recurrent pregnancy loss.
Below are some of the most common causes:
- Ovulation Disorders
Irregular menstrual cycles or ovulation problems can significantly affect fertility.
Ovulation—the release of a mature egg—is essential for conception. When ovulation is irregular or absent, the chances of pregnancy decrease. - Endometriosis
Endometriosis is a chronic condition that affects over 5.5 million women in North America.
It occurs when tissue similar to the uterine lining grows outside the uterus, often on the ovaries, fallopian tubes, or surrounding organs.
This can lead to inflammation, scarring, and blockages that may impact fertility or increase the risk of miscarriage. - Fallopian Tube Blockage or Disease
Damage or blockage of the fallopian tubes can prevent sperm from reaching the egg.This is often caused by scarring due to conditions such as endometriosis, pelvic infections, or untreated sexually transmitted infections (e.g., chlamydia).
Previous surgeries or a history of ectopic pregnancy may also increase the risk.
- Uterine Fibroids or Polyps
Fibroids and polyps are noncancerous growths in the uterus.
While often asymptomatic, they can interfere with implantation or increase the risk of miscarriage in some cases.
- Polycystic Ovary Syndrome (PCOS)
PCOS is a common hormonal disorder affecting millions of women in the U.S.
It can disrupt ovulation and lead to irregular menstrual cycles, making conception more difficult if not properly managed. - Premature Ovarian Insufficiency (POI)
Also known as premature ovarian failure, this condition occurs when the ovaries lose normal function before age 40.
It may result from genetic factors, medical treatments, or unknown causes, and can significantly affect fertility. - Age
Age is one of the most important factors in female fertility.
Around age 35, both the quality and quantity of eggs decline more rapidly, which can make it more difficult to conceive and maintain a healthy pregnancy.
With the right evaluation and support, many of these conditions can be managed or treated. Our team works closely with leading specialists to help you understand your options and build a clear path forward.
What Should You Do If You’re Struggling to Conceive?
- You are under 35 and have been trying to conceive for 12 months without success
- You are over 35 and have been trying for 6 months without success
- You have experienced two or more miscarriages
- You or your partner have been diagnosed with a known fertility-related condition
Understanding Male Infertility
- Genetic conditions
- Hormonal imbalances
- Injuries to the reproductive organs
- Previous surgeries (e.g., hernia repair, vasectomy)
- Infections, including sexually transmitted infections or mumps after puberty
- Exposure to toxins or radiation (e.g., cancer treatments)
- Lifestyle factors such as smoking, alcohol use, drug use, or excessive heat exposure
- A detailed medical history and physical examination
- A semen analysis, which assesses:
- Sperm count
- Motility (movement)
- Morphology (shape)
- Vasectomy Reversal
- Can restore fertility, with pregnancy rates often exceeding 50% when performed within 10 years
- Varicocele Repair
- May improve sperm quality and function
- Ejaculatory Duct Surgery
- Removes blockages affecting sperm delivery
- PESA
- TESA
- TESE
How to Prepare for Your First Fertility Consultation
- Your doctor and care team will review your medical and reproductive history
- You’ll discuss your fertility concerns and goals
- Your team may recommend initial testing or next steps
- Recent medical records (if available)
- Records from your primary care physician or OB-GYN
- Any previous fertility testing or treatment
- List all medications, vitamins, and supplements
- Include dosage and frequency
- Any existing medical conditions (you or your partner)
- Previous fertility evaluations or treatments
- Age at first menstrual cycle
- Details about your menstrual cycle (regularity, symptoms, flow)
- How long you’ve been trying to conceive
- Frequency of intercourse
- Any tracking methods used (e.g., ovulation kits, basal body temperature)
- Any known fertility challenges in your family
- Check your fertility coverage with your insurance provider
- Speak with HR if applicable
- Ask your clinic about financing options if needed
- Pelvic ultrasound
- Hormone blood tests (such as FSH, LH, TSH, and Prolactin)
- Semen analysis
- Infectious disease screening (if pursuing IUI or IVF)
IUI vs. IVF: Which Option Is Right for You?
- Ovarian stimulation with fertility medications
- Egg retrieval under light anesthesia
- Fertilization in a laboratory
- Embryo transfer into the uterus
- IUI success rate:
- ~8–15% per cycle (under age 35)
- ~5% or lower (over age 40)
- IVF success rate (using own eggs):
- ~40–45% (under age 35)
- ~15% or lower (over age 42)
- Have at least one open fallopian tube
- Are able to ovulate (naturally or with medication)
- Have a healthy ovarian reserve
- Have a normal uterine cavity
- Mild ovulation issues
- Cervical factors
- Mild male factor infertility
- Use of donor sperm
- Same-sex female couples

