Low Sperm Count: Causes & Treatment
A doctor-reviewed guide to understanding and treating oligospermia.
What is Low Sperm Count?
Low sperm count, medically known as oligospermia, refers to having a lower-than-normal number of sperm in the semen. It is one of the most common contributing factors to male infertility and is diagnosed through a semen analysis, not by any visible symptom alone.
Causes
- Varicocele (enlarged veins in the scrotum)
- Hormonal imbalances, including low testosterone or thyroid dysfunction
- Infections affecting the reproductive tract
- Genetic conditions affecting sperm production
- Obesity, chronic stress, and poor lifestyle habits
- Exposure to heat, toxins, or certain medications
- Smoking and excessive alcohol consumption
Symptoms
Low sperm count often has no obvious physical symptoms and is typically discovered when a couple is evaluated for difficulty conceiving. In some cases, it may be associated with reduced libido, erectile difficulties, or symptoms of an underlying hormonal condition.
Diagnosis
- Semen analysis to assess sperm count, motility, and shape
- Blood tests for hormone levels (testosterone, FSH, LH)
- Scrotal ultrasound to check for varicocele or structural issues
- Genetic testing in select cases
Treatment Options
- Treating underlying hormonal imbalances or infections
- Varicocele repair surgery, when applicable
- Lifestyle modification — weight management, quitting smoking, reducing alcohol
- Antioxidant supplementation to support sperm health
- Assisted reproductive techniques such as IUI, IVF, or ICSI for significant cases
Lifestyle Tips to Support Sperm Health
- Maintain a healthy weight through regular exercise
- Avoid prolonged heat exposure to the groin area
- Eat a balanced diet rich in antioxidants (fruits, vegetables, nuts)
- Limit alcohol and avoid smoking or recreational drugs
- Manage stress through relaxation techniques
When to See a Doctor
Consult a fertility specialist if you and your partner have been trying to conceive for over a year (or 6 months if the female partner is over 35) without success, so a proper fertility evaluation can be done for both partners.