"We looked " for the abnormality " in these men because oligospermia " _ having too few sperm _ " is much more common " than making no sperm, he said.
12.
Ejaculatory duct obstruction may result in a complete lack of semen ( aspermia ) or a very low-volume semen ( oligospermia ) which may contain only the secretion of accessory prostate glands downstream to the orifice of the ejaculatory ducts.
13.
Another cause of aspermia is ejaculatory duct obstruction, which may result in a complete lack of or a very low-concentration semen ( oligospermia ), in which the semen contains only the secretion of accessory prostate glands downstream to the orifice of the ejaculatory ducts.
14.
A review in 2013 came to the result that oligospermia and azoospermia are significantly associated with being overweight ( odds ratio 1.1 ), obese ( odds ratio 1.3 ) and morbidly obese ( odds ratio 2.0 ), but the cause of this is unknown.
15.
This is mainly or completely a consequence of their antigonadotropic activity . high-dose androgens ( e . g ., testosterone esters ), and antagonists ( though notably not agonists ) produce hypogonadism and high rates of severe or complete infertility ( e . g ., severe oligospermia or complete azoospermia ) in men . this is not necessarily reversible in the case of estrogens and can be long-lasting after prolonged exposure.
