Oligozoospermia is diagnosed when the concentration of sperm in semen is less than 15million/ml. As in Azoospermia, the semen analysis should be repeated twice. There are many reasons for Oligozoospermia. Endocrinopathies are a predominant reason for a reducing sperm count. Prolactinomas are notorious for reducing sperm counts. Genetic factors like Y chromosome microdeletions occur in 6% of men with low sperm counts. An abnormal karyotype is seen in about 2% of these men. Varicoceles have always been a point of semantics for ages. However, there is a lot of irrefutable evidence to prove that varicoceles do affect semen parameters.