scholarly journals Regional and ethnic differences in semen quality and reproductive hormones in Russia: a Siberian population‐based cohort study of young men

Andrology ◽  
2021 ◽  
Author(s):  
Ludmila Osadchuk ◽  
Larisa Shantanova ◽  
Ivan Troev ◽  
Maxim Kleshchev ◽  
Alexander Osadchuk
Keyword(s):  
Cohort Study ◽  
Ethnic Differences ◽  
Semen Quality ◽  
Young Men ◽  
Population Based ◽  
Reproductive Hormones ◽  
Siberian Population

scholarly journals Semen quality of 1559 young men from four cities in Japan: a cross-sectional population-based study

BMJ Open ◽  
2013 ◽  
Vol 3 (4) ◽  
pp. e002222 ◽  
Author(s):  
Teruaki Iwamoto ◽  
Shiari Nozawa ◽  
Makiko Naka Mieno ◽  
Katsunori Yamakawa ◽  
Katsuyuki Baba ◽  
...  
Keyword(s):  
Semen Quality ◽  
Young Men ◽  
Population Based ◽  
Cross Sectional ◽  
Population Based Study

scholarly journals Ethnic differences in prediabetes incidence among immigrants to Canada: a population-based cohort study

BMC Medicine ◽  
2019 ◽  
Vol 17 (1) ◽  
Author(s):  
Ghazal S. Fazli ◽  
Rahim Moineddin ◽  
Arlene S. Bierman ◽  
Gillian L. Booth
Keyword(s):  
Cohort Study ◽  
Ethnic Differences ◽  
Population Based

scholarly journals Semen quality of young men in Switzerland: a nationwide cross‐sectional population‐based study

Andrology ◽  
2019 ◽  
Vol 7 (6) ◽  
pp. 818-826 ◽  
Author(s):  
R. Rahban ◽  
L. Priskorn ◽  
A. Senn ◽  
E. Stettler ◽  
F. Galli ◽  
...  
Keyword(s):  
Semen Quality ◽  
Young Men ◽  
Population Based ◽  
Cross Sectional ◽  
Population Based Study

scholarly journals 990 Ethnic Differences in Neonatal Body Composition and the Impact of Parental Size. a Population-Based Cohort Study

2012 ◽  
Vol 97 (Suppl 2) ◽  
pp. A283-A283 ◽  
Author(s):  
L. Sletner ◽  
B. Nakstad ◽  
S. Vangen ◽  
K. Morkrid ◽  
K. Birkeland ◽  
...  
Keyword(s):  
Body Composition ◽  
Cohort Study ◽  
Ethnic Differences ◽  
Population Based ◽  
Neonatal Body Composition ◽  
The Impact

scholarly journals Effects of Testosterone Plus Medroxyprogesterone Acetate on Semen Quality, Reproductive Hormones, and Germ Cell Populations in Normal Young Men

2002 ◽  
Vol 87 (2) ◽  
pp. 546-556 ◽  
Author(s):  
Robert I. McLachlan ◽  
Liza O’Donnell ◽  
Peter G. Stanton ◽  
Georgia Balourdos ◽  
Mark Frydenberg ◽  
...  
Keyword(s):  
Germ Cell ◽  
Medroxyprogesterone Acetate ◽  
Semen Quality ◽  
Young Men ◽  
Reproductive Hormones ◽  
Cell Populations

scholarly journals Low Exercise Capacity Increases the Risk of Low Cognitive Function in Healthy Young Men Born Preterm: A Population-Based Cohort Study

PLoS ONE ◽  
2016 ◽  
Vol 11 (8) ◽  
pp. e0161314 ◽  
Author(s):  
Jenny Svedenkrans ◽  
Jan Kowalski ◽  
Mikael Norman ◽  
Kajsa Bohlin
Keyword(s):  
Cohort Study ◽  
Cognitive Function ◽  
Exercise Capacity ◽  
Young Men ◽  
Population Based

P–741 Fetal exposure to maternal perceived stress and male reproductive function in a cohort of young adults

2021 ◽  
Vol 36 (Supplement_1) ◽  
Author(s):  
K Petersen ◽  
K Keglber. Hærvig ◽  
J P Bonde ◽  
K Søri. Hougaard ◽  
G Toft ◽  
...  
Keyword(s):  
Emotional Stress ◽  
Perceived Stress ◽  
Negative Binomial ◽  
Maternal Stress ◽  
Semen Quality ◽  
Young Men ◽  
Reproductive Function ◽  
Reproductive Hormones ◽  
Specific Information ◽  
Testicular Size

Abstract Study question Is exposure to maternal perceived stress during pregnancy associated with reproductive function in adult male offspring? Summary answer While maternal perceived stress was prevalent in the first trimesters of pregnancy, our preliminary findings indicate little association with reproductive function in young men. What is known already Though studies in animals point to a connection between prenatal exposure to maternal stress and reproductive function in offspring, the underlying biological mechanisms generating a deficit remain largely unclear. In humans, the few available studies focus on exposure to bereavement or other relatively strong objective stressful life events. Our individual perception of stress is, however, more likely the sum of a complex process involving both the actual input, previous experiences, coping strategies and support from our surroundings. Study design, size, duration Young men and their mothers were identified through records from the Danish National Birth Cohort (DNBC). Information on exposure, i.e. maternal perceived life and emotional stress, was available from telephone interviews conducted at approximately 30 weeks of gestation (1996 to 2001). Recruitment of the young men lasted from 2017 to 2019 with 1058 participants enrolled in the final FEPOS cohort. Participants/materials, setting, methods Each of the 1058 men in the FEPOS cohort completed an online questionnaire and clinical examinations and provided a blood and semen sample. Information on potential pre- and postnatal confounders was retrieved from the DNBC, the Danish National Patient Register and the Danish Medical Birth Register. We applied negative binomial regression models to examine associations between maternal perceived life and emotional stress scores and semen quality, testicular size and reproductive hormones among the young men. Main results and the role of chance Among the 1052 young men included in preliminary analyses, the majority was exposed to maternal perceived life and/or emotional stress (76% and 83%, respectively) during the first trimesters. Life stress was predominantly related to the actual pregnancy (48%), maternal disease (19%) or occupational conditions (33%). Emotional stress included especially being touchy (58%), sad (38%) or tense (36%), covering aspects of both stress, depression and anxiety. Overall, results indicate little association between maternal stress scores and measures of semen quality and testicular size. Our study involves a large cohort with prospectively collected exposure data and direct measures of several male reproductive outcomes. We applied inverse probability weighting to account for selection into the FEPOS cohort and included a range of a priori selected maternal confounders in our models. Limitations, reasons for caution The male fetus may be particularly sensitive to exposure during the differentiation of reproductive tissues (8–14 weeks of gestation). Our self-reported measures of exposure cover the first 30 weeks of gestation. Absence of association may, thus, be due to a lack of specific information on timing of symptoms. Wider implications of the findings: While our preliminary findings may appear reassuring, further efforts to improve our understanding of maternal stress in relation to fetal health and potential consequences later in life are needed. Trial registration number Not applicable

Cancer risk among young men with weight gain after smoking cessation: A population-based cohort study

2019 ◽  
Vol 60 ◽  
pp. 86-92 ◽  
Author(s):  
Kyuwoong Kim ◽  
Seulggie Choi ◽  
Gyeongsil Lee ◽  
Su-Min Jeong ◽  
Sung Min Kim ◽  
...  
Keyword(s):  
Smoking Cessation ◽  
Cohort Study ◽  
Weight Gain ◽  
Cancer Risk ◽  
Young Men ◽  
Population Based

scholarly journals Anogenital distance is associated with semen quality but not reproductive hormones in 1106 young men from the general population

2018 ◽  
Vol 34 (1) ◽  
pp. 12-24 ◽  
Author(s):  
L Priskorn ◽  
A K Bang ◽  
L Nordkap ◽  
M Krause ◽  
J Mendiola ◽  
...  
Keyword(s):  
General Population ◽  
Semen Quality ◽  
Young Men ◽  
Reproductive Hormones ◽  
Anogenital Distance
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