Male infertility is a common yet treatable condition faced by couples wishing to have children. The male factor plays a role in approximately half of infertility cases, affecting one in seven couples in society. This situation highlights that male reproductive health is just as important as female reproductive health, contrary to the tendency to focus solely on women's health. As Prof. Dr. Kubilay Vicdan, with our long years of experience, we offer the most up-to-date approaches in IVF and other assisted reproductive techniques to understand the causes of male infertility and to provide hope to couples with modern treatment methods. At Ankara IVF Center, we aim to create the most suitable treatment plan by evaluating each individual's unique situation.
Common Causes
The causes of male infertility are quite diverse and can stem from problems with sperm production, transport, or functionality. Accurately identifying these causes is the first step in creating an effective treatment plan.
Sperm Production Disorders
- Genetic Factors: In some men, chromosomal abnormalities (e.g., Klinefelter syndrome) or genetic microdeletions on the Y chromosome can severely affect sperm production.
- Hormonal Imbalances: Decreases in hormones secreted from the brain that stimulate the testicles (FSH, LH) or in testosterone levels can impair sperm production.
- Undescended Testicle (Cryptorchidism): If the testicles do not descend into the scrotum at birth, they can be exposed to body temperature and lose their sperm production capacity.
- Infections: Some infections, such as mumps, can lead to inflammation in the testicles, permanently impairing sperm production. Sexually transmitted infections can also negatively affect sperm quality.
- Medications and Treatments: Cancer treatments like chemotherapy, radiotherapy, or certain chronic disease medications can have toxic effects on sperm production.
Sperm Transport Problems
Even if sperm production is normal, blockages or damage can occur in the ducts that allow sperm to be ejaculated from the penis. These conditions include:
- Congenital Blockages: In some men, the ducts that transport sperm (vas deferens) may be congenitally absent.
- Blockages After Infections or Surgical Procedures: Past infections or surgical operations such as inguinal hernia repair can lead to blockages in the sperm ducts.
- Retrograde Ejaculation: This is a condition where sperm travels backward into the bladder. It can occur due to nerve damage, diabetes, or certain surgeries.
Lifestyle and Environmental Factors
In today's world, lifestyle choices and environmental factors also have a significant impact on male infertility:
- Smoking and Alcohol Consumption: Smoking damages sperm DNA, while excessive alcohol consumption can lower testosterone levels and impair sperm quality.
- Obesity: Excessive weight can lead to hormonal imbalances, negatively affecting sperm production.
- Excessive Heat Exposure: Prolonged exposure of the testicles to high temperatures (tight underwear, hot baths, laptop use) can reduce sperm production.
- Toxins and Chemicals: Pesticides, heavy metals, and certain industrial chemicals can have harmful effects on sperm quality.
- Stress: Chronic stress can disrupt hormonal balance and negatively impact reproductive health.
The Impact of Varicocele
What is Varicocele and its Relationship with Infertility
Varicocele is a condition where the veins surrounding the testicles become enlarged and swollen, similar to varicose veins in the legs. It is one of the most common correctable causes of male infertility. Varicocele negatively affects sperm production and quality by slowing blood flow to the testicles and increasing scrotal temperature. The increased temperature can lead to sperm DNA damage, reduced sperm motility, and the formation of abnormally shaped sperm.
Varicocele often presents no noticeable symptoms and is usually diagnosed during a routine physical examination or infertility investigations. Some men may experience complaints such as pain, a feeling of heaviness, or a difference in testicular size.
Diagnosis and Treatment Approaches
Varicocele is typically diagnosed through a physical examination and scrotal ultrasonography. Ultrasonography provides detailed visualization of enlarged veins and blood flow. Treatment usually involves surgical intervention to ligate or block the enlarged veins (varicocelectomy). The goal of this operation is to normalize blood flow to the testicles and improve sperm production by reducing scrotal temperature. Not every varicocele case requires surgery; the decision for treatment is made considering factors such as the degree of varicocele, sperm parameters, and the couple's desire to have children.
Hormonal Evaluation
The Role of Hormones
The male reproductive system is governed by a complex hormonal balance. Hormones secreted from the hypothalamus and pituitary gland (GnRH, FSH, LH) stimulate the testicles, regulating testosterone production and sperm formation (spermatogenesis). Any imbalance in these hormones can directly affect sperm production and lead to male infertility. For example, low FSH and LH levels may indicate insufficient sperm production, while high FSH levels could be a sign of significant damage to the testicles.
Diagnosis and Treatment Options
Hormonal evaluation is an important part of diagnosing male infertility. Blood tests measure levels of FSH, LH, testosterone, prolactin, and thyroid hormones. These tests help determine if a hormonal imbalance exists and, if so, its cause. Hormonal imbalances can be corrected with medication. For example, hormone replacement therapy for low testosterone levels or medications to stimulate sperm production may be used. Treatment is custom-planned by Prof. Dr. Kubilay Vicdan and his team based on the underlying cause and individual situation. Hormonal treatments can improve sperm parameters, increasing the chance of natural conception or can be attempted as a step before proceeding to assisted reproductive techniques like IVF.
ICSI and Surgical Sperm Retrieval
Modern reproductive technologies offer hope to couples even in the most severe forms of male infertility. Especially for men with severely impaired sperm count, motility, or morphology, intracytoplasmic sperm injection (ICSI) and surgical sperm retrieval methods have made a significant difference.
What is Intracytoplasmic Sperm Injection (ICSI)?
ICSI is a specialized form of In Vitro Fertilization (IVF) treatment, particularly used in cases of severe male infertility. In this method, a single healthy sperm cell, selected under a microscope in the laboratory, is directly injected into an egg cell using a special microneedle. This allows fertilization to occur even if the sperm is unable to penetrate the egg on its own. ICSI offers high success rates for issues such as low sperm count (oligospermia), poor sperm motility (asthenospermia), or abnormal sperm morphology (teratospermia). At Ankara IVF Center, we provide our couples with the highest chance of success by utilizing the latest technologies and our experienced embryologist team in ICSI applications.
Surgical Sperm Retrieval Methods (TESE/Micro-TESE)
In some men, no sperm may be present in the ejaculate (azoospermia). This condition can be due to a problem with sperm production or a blockage in the sperm ducts. In such cases, it is possible to surgically retrieve sperm directly from the testicles. These methods include:
- TESA (Testicular Sperm Aspiration): Sperm is aspirated from the testicle using a needle.
- TESE (Testicular Sperm Extraction): A small piece of testicular tissue is taken to search for sperm.
- Micro-TESE (Microdissection TESE): Under an operating microscope, areas of the testicle with high sperm production potential are precisely identified and sperm is searched for.