Semen quality analysis of military personnel from six geographical areas of the People’s Republic of China

Zou, Zhikang; Hu, Haixiang; Song, Manshu; Yanling, Shen; Guo, Xiuhua; McElreavey, Kenneth; Bittles, Alan H.; Wang, Wei

doi:10.1016/j.fertnstert.2011.02.052

Cited by 37 publications

(32 citation statements)

References 37 publications

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“…During the past decades there has been much discussion about changes in semen quality with some studies finding significant declines (Carlsen et al, 1992;Auger et al, 1995;Irvine et al, 1996;Zou et al, 2011) and others finding no change (Bujan et al, 1996;Fisch et al, 1996;Paulsen et al, 1996). Despite the heterogeneity in study populations, overall, the data support a decline in sperm concentration in most Western countries (Swan et al, 2000).…”

Section: Introductionmentioning

confidence: 99%

Dietary patterns and semen quality in young men

Gaskins

Colaci

Mendiola

et al. 2011

Fertility and Sterility

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what is known already: Over the past decades there has been evidence of a concomitant decline in sperm and diet quality. Yet whether diet composition influences semen quality remains largely unexplored. participants, setting, methods: Men aged 18-22 years were included in this analysis. Diet was assessed via food frequency questionnaire and dietary patterns were identified by factor analysis. Linear regression was used to analyze the relation between diet patterns and conventional semen quality parameters (sperm concentration, progressive motility and morphology) adjusting for abstinence time, multivitamin use, race, smoking status, BMI, recruitment period, moderate-to-intense exercise and total calorie intake.results: Two dietary patterns were identified by factor analysis. The 'Western' pattern was characterized by high intake of red and processed meat, refined grains, pizza, snacks, high-energy drinks and sweets. The 'Prudent' pattern was characterized by high intake of fish, chicken, fruit, vegetables, legumes and whole grains. The Prudent pattern was positively associated with percent progressively motile sperm in multivariate models (P-trend ¼ 0.04). Men in the highest quartile of the Prudent diet had 11.3% (95% CI 1.3, 21.3) higher % progressively motile sperm compared with men in the lowest quartile. The Prudent pattern was unrelated to sperm concentration and morphology. The Western pattern was not associated with any semen parameter.limitations: This was a cross-sectional and observational study, which limited our ability to determine causality of diet on semen quality parameters.wider implications of the findings: Our findings support the suggestion that a diet rich in fruits, vegetables, chicken, fish and whole grains may be an inexpensive and safe way to improve at least one measure of semen quality.

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Section: Introductionmentioning

confidence: 99%

Dietary patterns and semen quality in young men

Gaskins

Colaci

Mendiola

et al. 2011

Fertility and Sterility

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“…Although there may appear to be ethnic differences, they may actually be geographic or regional differences. This has been noted in the United States, 122,123 Europe, 124 France, 125 China, 126,127 and Japan. 128 These regional differences may include ethnic differences, but also social economic status, lifestyle, climate, and other regional exposures such as pesticides, air pollution, etc.…”

Section: Questions From the Panel Q1mentioning

confidence: 76%

Maternal Recognition of Pregnancy

Thatcher

Meyer²,

Danet-Desnoyers³

2015

Computational Methods for Reproductive and Developmental Toxicology

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“…For example, the sperm concentration in the Chongqing area of southwest China was significantly low in summer (June) 25 ; on the other hand, military personnel from the People's Republic of China displayed significantly low values in autumn (September, October). 26 These differences might have been due to demographic characteristics, lifestyle factors, environmental factors or genetic variation; however, this needs to be clarified in future. In the present study, we showed that the sperm concentrations in January and June differ within Y chromosome haplogroups.…”

Section: Resultsmentioning

confidence: 99%

Climatic influence on the reproductive characteristics of Japanese males

et al. 2012

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We previously performed a survey of the sperm characteristics of the partners of pregnant women in four cities in Japan. In the present study, we analyzed the sperm characteristics of these subjects and the correlations between these sperm characteristics and climatic changes or Y chromosome haplogroups. Our results showed that more haplogroup D2a1 males than O2b1 males were born in the first half of the year (January to June), whereas more O2b1 males were born in the last half of the year (July to December) (Po0.05). This was agreed and correlated with the seasonal variations in their mean sperm concentrations. The haplogroup C, D* and D2a1 males displayed lower sperm concentrations from March to May, followed by an increase in their sperm concentrations starting in June or July, while the O2b1 males displayed higher sperm concentrations in the first half of the year followed by a sudden decrease from July to August (Po0.05). We hypothesize that the Japanese climate has different effects on the sperm characteristics and reproductive seasonality of males from different lineages; and therefore, has influenced the modern population of Japan.

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Semen quality analysis of military personnel from six geographical areas of the People’s Republic of China

Cited by 37 publications

References 37 publications

Dietary patterns and semen quality in young men

Dietary patterns and semen quality in young men

Maternal Recognition of Pregnancy

Climatic influence on the reproductive characteristics of Japanese males

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