How are you? Oligoasthenozoospermia is a combination of asthenozoospermia or reduced sperm motility and oligozoospermia or low spermatozoon count. The cause is of unknown cause but may be caused by genetic issues as well as underlying medical conditions like hormonal changes, any inflammation or infection in the male reproduction system. To determine the underlying cause, further evaluation may need to be done such as direct physical examination, ultrasound, and blood tests. Try to avoid smoking, exercise regularly, eat a healthy diet. Discuss the results with your doctor. Management will depend on the diagnosis and underlying issue. Take care and do keep us posted.