Luis J. Rodriguez-Rigau

TL;DR: The data demonstrate a lack of direct correlation between sperm density in the ranges of 5 to 60 million/ml and pregnancy rates in couples where the wife is treated intensively, and emphasize the importance of considering infertility as a problem of a couple rather than as a specific disorder of one of the partners.

TL;DR: It is suggested that, unless other parameters are found to be abnormal, sperm counts and total sperm counts above 10 million/ml and 25 million/ejaculate, respectively, probably are not major factors in a couple's infertility.

TL;DR: In male partners of infertile couples the presence of a varicocele is associated with compromised semen quality but not with diminished fertility when the female partners are treated, suggesting the importance of considering infertility as a problem of a couple, rather than a specific disorder of one of the partners.

TL;DR: In this article, the effect of varicoceles on spermatogenesis and sperm motility was investigated in men with varying degrees of unilateral or bilateral varicocellular cancer, and the results were correlated with plasma levels of gonadotropins (follicle-stimulating hormone [FSH], luteinizing hormone [LH]) and testosterone (T), as well as with semen quality.

TL;DR: Sperm motility was highest for patients with highest testosterone synthesis rates and when the patients were grouped according to the in vitro testosterone synthesis data a correlation between the circulating testosterone and gonadotropin levels was observed.