Fertility and sterility · 1997
No evidence for decreasing semen quality in four birth cohorts of 1,055 Danish men born between 1950 and 1970.
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Rasmussen P E, Erb K, Westergaard L G, Laursen S B
Аннотация
OBJECTIVE: To compare the quality of semen in 1,055 Danish men born between 1950 and 1970 who are assumed to represent a random sample of the Danish male population of fertile age.
DESIGN: Retrospective review of data on semen quality at the time of the female partner's first IVF treatment.
SETTING: The Fertility Clinic, Odense University Hospital, Odense, Denmark.
PATIENT(S): One thousand fifty-five male partners of women with tubal infertility who were referred for IVF treatment consecutively during the period 1990-1996.
INTERVENTION(S): Analysis of the semen samples delivered and used in connection with the couples' first IVF treatment.
MAIN OUTCOME MEASURE(S): Year of birth, age at time of sample collection, sperm concentration, and semen volume.
RESULT(S): The mean sperm concentration (+/- SD) was 183.7 x 10(6) mL and the mean semen volume (+/- SD) was 3.9 mL. A considerable variation in both parameters was found from year to year, but no significant change occurred in either parameter throughout the entire period. When four birth cohorts were compared, a later year of birth was not associated with any change in sperm concentration or semen volume.
CONCLUSION(S): Sperm concentration and semen volume were not related to year of birth, indicating that sperm quality has not changed in the Danish male population during the last 20-30 years.
DESIGN: Retrospective review of data on semen quality at the time of the female partner's first IVF treatment.
SETTING: The Fertility Clinic, Odense University Hospital, Odense, Denmark.
PATIENT(S): One thousand fifty-five male partners of women with tubal infertility who were referred for IVF treatment consecutively during the period 1990-1996.
INTERVENTION(S): Analysis of the semen samples delivered and used in connection with the couples' first IVF treatment.
MAIN OUTCOME MEASURE(S): Year of birth, age at time of sample collection, sperm concentration, and semen volume.
RESULT(S): The mean sperm concentration (+/- SD) was 183.7 x 10(6) mL and the mean semen volume (+/- SD) was 3.9 mL. A considerable variation in both parameters was found from year to year, but no significant change occurred in either parameter throughout the entire period. When four birth cohorts were compared, a later year of birth was not associated with any change in sperm concentration or semen volume.
CONCLUSION(S): Sperm concentration and semen volume were not related to year of birth, indicating that sperm quality has not changed in the Danish male population during the last 20-30 years.