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Understanding infertility
Audience: patients-public, students-learners ยท Review state: published
What it is
Infertility means not being able to get pregnant after a year of regular unprotected sex, or after six months for women aged 35 and older. It also covers being able to conceive but not stay pregnant.
It is common, affecting roughly one in six couples, and it is not only a women's issue: causes are shared fairly evenly between female factors, male factors, and combined or unexplained causes.
Causes
In women, common causes include ovulation problems such as polycystic ovary syndrome, blocked fallopian tubes, endometriosis, and age-related decline in egg number and quality. In men, the usual causes are low sperm count, poor sperm movement, or blockages, sometimes linked to varicocele, past infections, or hormonal problems.
Lifestyle factors matter for both partners: smoking, heavy alcohol, obesity or being underweight, and high stress can all reduce fertility.
Evaluation
Both partners are usually assessed together. For women this can include hormone blood tests, ultrasound, and checking whether the tubes are open; for men, a semen analysis is the starting point.
Age guides timing: because fertility falls faster after 35, doctors recommend seeking help sooner rather than waiting the full year.
Treatment
Treatment depends on the cause and ranges from simple to advanced: timing intercourse, medicines that trigger ovulation, surgery for blocked tubes or varicocele, intrauterine insemination, and in vitro fertilization, where eggs and sperm are combined in a laboratory.
Many couples treated for infertility do conceive, though sometimes after several attempts. The process can be emotionally demanding, and support for the stress of treatment is part of good care.
Limitations
General educational overview, not medical advice and not a diagnosis. Fertility evaluation and treatment choices are individual and belong with a reproductive medicine specialist.