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Fertil Steril. 2010 Dec;94(7):2898-901. doi: 10.1016/j.fertnstert.2010.06.047. Epub 2010 Jul 29.

Obesity and age affect male fertility potential.

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Department of Dermatology, Training Center of the European Academy of Andrology, University of Leipzig, Leipzig, Germany.


A case-cohort study of 2,157 patients, aged 17-67 years was performed to assess the impact of body mass index and age on male fertility. Using a multiple regression analysis across the total cohort, only age correlated significantly with all spermiogram parameters and serum hormones, but in patients aged 20-30 years (n = 617) the total sperm count was significantly negatively correlated with body mass index.

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