Jason Kovac

Male Reproductive Medicine and Surgery, Men's Health Center, Indianapolis, Indiana.
  • Men's Health Center, Indianapolis, Indiana.
  • United States of America

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Recent Comments

Apr 01, 2018

How were the authors able to separate the effects of sleep hours from the day/night changes experienced by shift workers?  Was there concern that this could be a confounder?  This concept was published in the J. Urol in abstract form (http://www.jurology.com/article/S0022-5347(17)30920-5/pdf) as well as in Fertility Sterility (http://www.fertstert.org/article/S0015-0282(17)31478-4/pdf).

Apr 01, 2018

Wondering if the  National Survey of Family Growth obtained data regarding sperm counts.  This would be helpful to cast light on the association between sperm counts and marijuana use.  Other studies have suggest a negative interaction however in the context of this data, it could be tempting to speculate that such a relationship may not be identified (https://academic.oup.com/aje/article/182/6/473/82600).

Mar 14, 2018

For readers looking for other biomarkers relating to male fertility the link below will assist.


Mar 14, 2018

Interesting commentary and concept.  The idea that sperm donor anonymity may be a concept that is rapidly disappearing is something that needs to be considered.

Mar 11, 2017
Any type of home sperm testing can serve indirect benefit and harm. For those couples encountering reproductive endocrinologists that do not refer the male, this can give the couple a reason for initiating contact with a urologist. However if the test registers a normal, intervention might not be pursued. Accuracy of such testing should include this consideration.
Mar 11, 2017
Great article on an issue that has become more relevant with the propagation of testosterone therapy. Another issue to consider is something we published in the CUAJ (http://www.cuaj.ca/index.php/journal/article/view/2259/1969) suggesting that all men of reproductive age should have a semen analysis done prior to commencement of testosterone therapy. Recovery can only occur to a baseline which, if not know, because difficult to establish.
Mar 11, 2017
Much discussion lately about advanced paternal age and reproduction. Wonder what others are suggesting to their male patients who are looking at delaying fatherhood. Freeze sperm now just to be sure or carry on, there won't be an issue. Evidence not there currently to advocate freezing in those situations but a study looking into it perhaps using PGS with young vs mature sperm might be fruitful.
Aug 17, 2016
Would be great to know what these plans are. Can the authors comment on some of the most important points of this article?

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