Categories: Mens fertility

Decline in Semen Quality among Fertile Men in Paris during the Past 20 Years

Background Several studies have suggested a population-wide decline in the quality of semen over the past 50 years, but clear evidence of decreasing semen quality in recent decades is lacking.

Methods From 1973 through 1992 we measured the volume of seminal fluid, the sperm concentration, and the percentages of motile and morphologically normal spermatozoa in 1351 healthy fertile men. The data on the semen samples were collected at one sperm bank in Paris. The data in each calendar year were analyzed as a function of the year of donation, the age of each patient, the year of birth, and the duration of sexual abstinence before semen collection.

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Results There was no change in semen volume during the study period. The mean concentration of sperm decreased by 2.1 percent per year, from 89 x106 per milliliter in 1973 to 60×106 per milliliter in 1992 (P less than 0.001). During the same period the percentages of motile and normal spermatozoa decreased by 0.6 percent and 0.5 percent per year, respectively (both P<0.001). After adjustment in multiple regression analyses for age and the duration of sexual abstinence, each successive calendar year of birth accounted for 2.6 percent of the yearly decline in the sperm concentration and for 0.3 percent and 0.7 percent, respectively, of the yearly declines in the percentages of motile and normal spermatozoa (all P<0.001).

Conclusions During the past 20 years, there has been a decline in the concentration and motility of sperm and in the percentage of morphologically normal spermatozoa in fertile men that is independent of the age of the men.

Dr Spence Pentland

Dr. Pentland is founder of The IVF Acupuncture Group of Greater Vancouver, available 7 days a week for on site embryo transfer and acupuncture treatments at the Pacific Centre for Reproductive Medicine (PCRM) and Genesis Fertility Centre. “The integrated relationship I have established with these clinics is something that I value very much as it expands my knowledge, gives me the opportunity to reach more people, and helps me better understand how to support women on their journey toward family.” says Dr. Pentland. Dr. Pentland, along with Dr. Jeffrey Roberts of The Pacific Centre for Reproductive Medicine (PCRM), and Dr. Christine Sutton of the University of British Columbia, authored research published in Fertility & Sterility on the stress reducing effects of acupuncture when administered in the weeks leading up to an IVF embryo transfer. In 2015 Spence published BEING FERTILE - 10 Steps to Help You Overcome the Struggles of Infertility, Get Pregnant, and Create a Happy, Healthy Family. A book written to provide hope, tools and resources for women and couples experiencing difficulty starting or expanding their families. Dr. Pentland is founder of The IVF Acupuncture Group of Greater Vancouver, available 7 days a week for on site embryo transfer and acupuncture treatments at the Pacific Centre for Reproductive Medicine (PCRM) and Genesis Fertility Centre. “The integrated relationship I have established with these clinics is something that I value very much as it expands my knowledge, gives me the opportunity to reach more people, and helps me better understand how to support women on their journey toward family.” says Dr. Pentland. Dr. Pentland, along with Dr. Jeffrey Roberts of The Pacific Centre for Reproductive Medicine (PCRM), and Dr. Christine Sutton of the University of British Columbia, authored research published in Fertility & Sterility on the stress reducing effects of acupuncture when administered in the weeks leading up to an IVF embryo transfer. In 2015 Spence published BEING FERTILE - 10 Steps to Help You Overcome the Struggles of Infertility, Get Pregnant, and Create a Happy, Healthy Family. A book written to provide hope, tools and resources for women and couples experiencing difficulty starting or expanding their families. Further demonstrating his commitment to reproductive health, he is a devoted member of IAAC (Infertility Awareness Association), CFAS (Canadian Fertility and Andrology Society), and ASRM (American Society for Reproductive Medicine). As the former president of the Traditional Chinese Medicine Association of British Columbia and the provincial BC TCM quality assurance committee, Dr. Pentland is well respected by peers and patients alike. He remains actively involved in educating healthcare colleagues and the public on the powerful benefits of Chinese medicine & acupuncture, working steadily on the integration of ancient Daoist wisdom into modern western life as a way to build awareness about reproductive health. This compassionate expertise is reflected in patient testimonials. When not helping others start their families, Spence can be found spending time with his own--his adoring wife Chantal and their two beautiful sons. “I am very proud to be part of the team of professionals at Yinstill. We are all dedicated to raising the bar in the field of complimentary and alternative reproductive medicine. Nothing is more important than family,” he says. 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