Unlike women, who reach menopause when their ovarian function and egg production stops, males continue to produce sperm throughout their lives. It’s not entirely clear, but there’s some evidence that as men gets older, semen quality, embryo development, and IVF outcomes may deteriorate slightly. Research has shown that certain genetic illnesses and conditions, such
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Azoospermia is the medical term used when there are no sperm in the ejaculate. Azoospermia can be ‘obstructive’ which means that the route between the production site of sperm (testes) and ejaculation is blocked. In some cases, the cause of blockage can be known, e.g. a previous vasectomy or a failed reverse vasectomy.

