A low sperm count, also called oligozoospermia, is where a man has fewer than 15 million sperm per millilitre of semen. Having a low sperm count can make it more difficult to conceive naturally, although successful pregnancies can still occur.

What is the lowest sperm count to get pregnant?

Your sperm count is considered “lower than normal” if you have fewer than 15 million sperm per milliliter of semen. Low sperm count means your sperm are less likely to fertilize your partner's egg, resulting in pregnancy.

What cause low sperms count?

Lifestyle choices can lower sperm numbers. Smoking, drinking alcohol, and taking certain medications can lower sperm numbers. Other causes of low sperm numbers include long-term sickness (such as kidney failure), childhood infections (such as mumps), and chromosome or hormone problems (such as low testosterone).