scholarly journals Adherence to diet quality indices in relation to semen quality and reproductive hormones in young men

2019 ◽  
Vol 34 (10) ◽  
pp. 1866-1875 ◽  
Author(s):  
Ana Cutillas-Tolín ◽  
Evdochia Adoamnei ◽  
Eva M Navarrete-Muñoz ◽  
Jesús Vioque ◽  
Miriam Moñino-García ◽  
...  
Keyword(s):  
Semen Quality ◽  
Sperm Count ◽  
A Priori ◽  
Young Men ◽  
Reproductive Hormones ◽  
Semen Parameters ◽  
Reproductive Hormone ◽  
Quality Indices ◽  
Sperm Counts ◽  
Dietary Indices

Abstract STUDY QUESTION Is adherence to an a priori defined diet quality indices [Alternate Healthy Index 2010 (AHEI-2010), relative Mediterranean diet score (rMED) or dietary approaches to stop hypertension (DASH)] associated with semen quality and reproductive hormone levels in young men? SUMMARY ANSWER Greater adherence to the DASH diet is related to higher sperm counts. WHAT IS KNOWN ALREADY Studies assessing the relationship between dietary intake and male reproductive function have mainly been focused on specific nutrients, food groups or data-driven dietary patterns, but the evidence on a priori defined dietary indices is still scarce. STUDY DESIGN, SIZE, DURATION Cross-sectional study of 209 male university students recruited from October 2010 to November 2011 in Murcia Region (Southern Spain). PARTICIPANTS/MATERIALS, SETTING, METHODS Healthy young men aged 18–23 years were included in this study. Diet was assessed using a validated food frequency questionnaire and three a priori-defined dietary indices (AHEI-2010, rMED and DASH) were calculated. Linear regression was used to analyze the relation between the three dietary indices and semen quality parameters and reproductive hormone levels accounting for potential confounders and covariates. MAIN RESULTS AND THE ROLE OF CHANCE We found statistically significant positive associations between the DASH index and sperm concentration (P, trend = 0.04), total sperm count (P, trend = 0.04) and total motile sperm count (P, trend = 0.02). No associations were observed for other semen parameters or male reproductive hormones. LIMITATIONS, REASONS FOR CAUTION Even though we adjusted for several known and suspected confounders we cannot exclude the possibility of residual or unmeasured confounding or chance findings. Subjects were blinded to the study outcomes thus reducing the potential influence on their report of diet. Our sample size may be too small to rule out associations with other semen parameters or reproductive hormones. Causal inference is limited, as usual with all observational studies. WIDER IMPLICATIONS OF THE FINDINGS The results suggest that greater adherence to the DASH may help improve sperm counts. This study was carried out on young men from the general population. However, results may differ among other populations (e.g. infertile men). Therefore, further research is needed to confirm these findings and extend these results to other populations. STUDY FUNDING/COMPETING INTEREST(S) This work was supported by Fundación Séneca, grants No 08808/PI/08 and No 19443/PI/14; Ministerio de Ciencia e Innovación, Instituto de Salud Carlos III (AES), grants No PI10/00985 and No PI13/01237; and grant P30DK046200 from the National Institutes of Health. Authors have no competing interests to declare.

scholarly journals Meat intake in relation to semen quality and reproductive hormone levels among young men in Spain

2018 ◽  
Vol 121 (4) ◽  
pp. 451-460 ◽  
Author(s):  
Ana B. Maldonado-Cárceles ◽  
Lidia Mínguez-Alarcón ◽  
Jaime Mendiola ◽  
Jesús Vioque ◽  
Niels Jørgensen ◽  
...  
Keyword(s):  
Semen Quality ◽  
Linear Trend ◽  
Young Men ◽  
Reproductive Hormones ◽  
Semen Parameters ◽  
Reproductive Hormone ◽  
Cross Sectional ◽  
Significant Linear Trend ◽  
Meat Intake ◽  
Hormone Levels

AbstractThe aim of this study was to assess the associations of intake of different types of meat with semen parameters and reproductive hormones in healthy young men. This cross-sectional study included 206 men, 18–23 years, from Southern Spain. All men completed a validated FFQ, underwent a physical examination, and provided blood and semen samples. Multivariable linear regression was used to evaluate the associations between meat intake with semen quality parameters and reproductive hormones. Total meat intake was unrelated to semen quality or reproductive hormone levels. When subgroups of meat were separately considered, however, shellfish intake was positively related to progressive motility. The adjusted percentages of progressively motile spermatozoa for men in increasing quartiles of shellfish intake were 45·2, 42·0, 49·4 and 53·2 % with a significant linear trend across quartiles (Ptrend≤0·001). In contrast, men who consumed organ meats had significantly lower progressive sperm motility (51·5 v. 42·8 %; P = 0·001) and higher luteinising hormone levels (4·0 v. 4·6 IU/l; P = 0·03) compared with men who did not consume organ meats. Intake of shellfish and organ meats was low in this population, however. Given the scarcity of data on the relation between specific types of meat with semen quality and reproductive hormone levels, additional research is needed to confirm or refute these findings.

scholarly journals Use of Personal Care Products and Semen Quality: A Cross-Sectional Study in Young Danish Men

Toxics ◽  
2020 ◽  
Vol 8 (3) ◽  
pp. 62
Author(s):  
Kajsa Ugelvig Petersen ◽  
Ahmad Mahmoud Balkiss ◽  
Katia Keglberg Hærvig ◽  
Jens Peter Ellekilde Bonde ◽  
Karin Sørig Hougaard ◽  
...  
Keyword(s):  
Negative Binomial ◽  
Semen Quality ◽  
Sperm Count ◽  
Sperm Concentration ◽  
Personal Care Products ◽  
Young Men ◽  
Semen Parameters ◽  
Negative Binomial Regression Model ◽  
Personal Care ◽  
Male Reproductive Function

Personal care products (PCPs) may contain multiple chemicals capable of harming male reproductive function. The aim of this study was, therefore, to assess aggregated PCP exposure and potential associations with measures of semen quality in young men. Participants (n = 1058, age 18–21) were sampled among young men from the Danish National Birth Cohort (DNBC). Upon recruitment in 2017–2019, each man answered an online questionnaire and provided a semen sample. Exposure to 12 common types of PCPs was derived from the questionnaire, and the extent of use and co-use was analyzed. We applied a negative binomial regression model to estimate percentage differences in semen parameters between low, medium and high PCP exposure groups. All participants were exposed to at least one PCP more than once a week, resulting in a mean number (SD) of 5.3 (2.0) PCPs currently used. Most participants (92%) were also exposed to fragranced products on a weekly basis. Little association was observed between aggregated exposure to PCPs and sperm concentration, total sperm count, semen volume, sperm motility and morphology. Despite prevalent use of multiple PCPs, we found little indication of adverse effects of aggregated overall or fragranced PCP exposure on semen quality.

Pattern of Changes in Semen Characteristics in Subfertile Males of South Asian Subcontinent: Analysis of 1,000 Semen Samples

2016 ◽  
Vol 8 (2) ◽  
pp. 145-148
Author(s):  
Narendra Malhotra ◽  
Nusrat Mahmud ◽  
Haroon Latif Khan
Keyword(s):  
Statistical Analysis ◽  
South Asian ◽  
Semen Quality ◽  
Sperm Count ◽  
Reproductive Hormones ◽  
Sperm Parameters ◽  
Semen Parameters ◽  
Age Difference ◽  
Semen Characteristics ◽  
Bangladeshi Population

ABSTRACT Aim To investigate and compare whether semen quality has changed in South Asian subfertile males attending three different infertility units. Objectives To characterize the semen parameters of subfertile men in South Asian region and to study the prevalence of abnormal semen parameters of subfertile males of South Asian subcontinent. Materials and methods Study period — January 2014 to December 2014. Setting: Centre for Assisted Reproduction, BIRDEM, Dhaka, Bangladesh Malhotra Nursing Home, Agra, Uttar Pradesh, India Lahore Institute of Fertility and Endocrinology, Lahore, Punjab, Pakistan The possible decline in semen parameters related to male fertility was evaluated by determining the volume, sperm count, motility, viability, and morphology in individuals attending infertility clinics. WHO 2004 initially and then WHO 2010 criteria were used to analyze the semen sample. Results There was no significant age difference among the participants from three different countries. There was significant increase rate of azoopsermia in all the population groups especially in Bangladeshi population. Necrozospermia (100%) immotile sperm is higher in Pakistani populations compare to Bangladeshis and Indians. Normal sperm parameters (Normozoospermia) rate is compatible in Pakistani and Indian male but lower rate is noted in Bangladeshi population. No significant changes were noted in oligozospermia group but significant changes in asthenozospermia noted in Bangladeshi population compare two other two countries Statistical analysis Statistical analysis were performed by using Statistical Software Package (SAS) version 9.1.3 (SAS Institute Inc., Cary, NC, USA). Conclusion Our finding suggested that the values of sperm parameters were in agreement with WHO criteria, significantly different in subfertile men of this region. A further study with good quality collaborative long term research should be carried out, including aspects such as semen quality, reproductive hormones and xenobiotics as well as a strict definition of fecundity in this region is needed. How to cite this article Mahmud N, Malhotra N, Malhotra J, Khan HL. Pattern of Changes in Semen Characteristics in Subfertile Males of South Asian Subcontinent: Analysis of 1,000 Semen Samples. J South Asian Feder Obst Gynae 2016;8(2):145-148.

scholarly journals What Is the Impact of Excessive Iodine and Semen Quality in Fertile Men of China: An Association Study 

2021 ◽  
Author(s):  
Ning Wang ◽  
Fang Lv ◽  
Ge Yu ◽  
Cuige Shi ◽  
Shangming Wang ◽  
...  
Keyword(s):  
Semen Quality ◽  
Sperm Count ◽  
Sperm Concentration ◽  
Urinary Iodine ◽  
Iodine Concentration ◽  
Male Reproduction ◽  
Semen Parameters ◽  
Human Thyroid ◽  
Urinary Iodine Concentration ◽  
The Impact

Abstract Background: Iodine is an essential element for hormones synthesized by the human thyroid gland. Thyroid hormone deficiency affects all body tissues, including multiple endocrine changes that alter growth hormones, corticotrophin, glucocorticoids, and gonadal function. In many countries, subfertility is an important problem affecting about 10–15% of all couples trying to conceive. Male subfertile factors have accounted for 25–30% of all cases in their studies. The aim of this study was to study the correlation between urinary iodine concentration (UIC) and semen quality of fertile male in China.Methods: semen and urine samples were collected from males who attended a survey for the reproductive physiological constants of male and female in China. All participants were fertile and they should be free from diseases of male reproductive system and thyroid related diseases. We studied the correlation between UIC and semen quality parameters in fertile males and the effect of iodine concentration on male reproduction. Participants were divided into six groups based on UIC. We measured semen parameters and UIC. Semen parameters or time-to-pregnancy (TTP) were analyzed by Spearman correlation, linear regression and multivariable logistic regression. Results: 1089 men were recruited in the study. The mean and median age of participants were 27.46±0.12 and 27±3.88 years, respectively. UIC of 274 (25.16%) men was lower than the UIC of WHO recommended. UIC of 405 men located in the region of WHO recommended. 62.35% of them were not located in the optimal region. Semen concentration and total sperm count were found to decrease when UIC increases when the UIC≥100 ug/L. Conclusions: A male with deficient UIC or excessive UIC has more risk of lower semen quality such as sperm concentration and total sperm count. In addition, if a male with deficient UIC or excessive UIC, his wife has longer TTP than the males who had normal UIC. Deficient UIC associated with lower semen quality and TTP than excessive UIC.

scholarly journals Semen quality pattern and age threshold: a retrospective cross-sectional study of 71,623 infertile men in China, between 2011 and 2017

2019 ◽  
Vol 17 (1) ◽  
Author(s):  
W. N. Li ◽  
M. M. Jia ◽  
Y. Q. Peng ◽  
R. Ding ◽  
L. Q. Fan ◽  
...  
Keyword(s):  
Semen Quality ◽  
Sperm Count ◽  
Sperm Concentration ◽  
Cross Sectional Study ◽  
Semen Parameters ◽  
Sectional Study ◽  
Joinpoint Regression ◽  
Cross Sectional ◽  
Progressive Motility ◽  
Infertile Men

Abstract Background The aim of this study was to provide information on the semen quality pattern of infertile men and age thresholds for semen parameters in China. Methods This was a retrospective cross-sectional study investigating 71,623 infertile men from the Reproductive and Genetic Hospital of CITIC Xiangya in Hunan, China, from 2011 to 2017. The Kruskal-Wallis test, Mann-Kendall test, linear regression model and joinpoint regression were used. Results Although erratic changes were observed in the median semen parameters (sperm concentration 40.1–52.1 × 106/ml, total sperm count 117.8–153.1 × 106, sperm progressive motility 33.4–38.1%) during the 7 years of observation, no significant decrease in semen quality was found, and 47.88% of infertile men showed normal semen parameters according to the World Health Organization (WHO) criteria. According to the joinpoint regression analysis, sperm progressive motility appeared to decrease earlier than the sperm concentration and total sperm count (at 28, 58, and 42 years of age, respectively). Conclusions There is no evidence of a deterioration in semen quality among infertile men in Hunan, China. Semen parameters decreased with increasing age, with turning points noted at different ages. Semen parameters are not absolute evidence for the assessment of male fertility potential. Therefore, we believe that, among semen parameters, the sperm concentration is the best predictor of fertility for ART, followed by motility. Decreased sperm motility may affect natural pregnancy, but it is not necessary for successful IVF.

Semen characteristics and sperm morphology in the Arabian leopard (Panthera pardus nimr) and how these vary with age and season

2005 ◽  
Vol 17 (7) ◽  
pp. 675 ◽  
Author(s):  
Florine J. de Haas van Dorsser ◽  
Jacqueline A. Strick
Keyword(s):  
Sperm Morphology ◽  
Semen Quality ◽  
Semen Parameters ◽  
Panthera Pardus ◽  
Normal Morphology ◽  
Critically Endangered Species ◽  
Artificial Breeding ◽  
Sperm Counts ◽  
In The Wild ◽  
Careful Management

The Arabian leopard is a critically endangered species. Since there are only an estimated 200 animals remaining in the wild, careful management of the captive population is necessary to minimise inbreeding. The objective of this study was to characterise sperm morphology and ejaculate quality in captive males. Semen was collected by electroejaculation from 8 adult captive male leopards (aged 2–16 years) during the summer and winter months, and semen parameters, including sperm morphology, were assessed. Two-year-old leopards showed lower total sperm counts per ejaculate than older animals and these counts declined at >8 years. Ejaculates collected during the hot summer showed significantly lower sperm concentrations, total sperm counts, sperm motility and viability and percentage of spermatozoa showing normal morphology than ejaculates collected in the cooler winter. The results showed that the male leopard attains sexual maturity between 2 and 3 years of age and exhibits good semen quality until 8 years. Collection of semen for artificial breeding or banking would best be carried out in the cooler winter months.

scholarly journals The effect of treatment by L-carnitine for infertile men on semen parameters

2019 ◽  
Vol 24 (2) ◽  
pp. 30
Author(s):  
Abdul Rahman Jihad Manssor1 ◽  
Zaid Mohammed Mubarak Al–Mahdawi1 ◽  
Azzawi Mustafa Hadi2
Keyword(s):  
Male Infertility ◽  
Semen Quality ◽  
Antioxidant Properties ◽  
Sperm Concentration ◽  
Multiple Roles ◽  
Male Reproduction ◽  
Semen Parameters ◽  
Beneficial Effects ◽  
Sperm Counts ◽  
Effect Of Treatment

L-Carnitine (LC) is highly concentrated in the epididymis and plays a crucial role in sperm metabolism and maturation. They are related to sperm motility and have antioxidant properties. The objective of this review is to summarize the multiple roles played by LC in male reproduction, and to highlight their limitations as well as their benefits in the treatment of male infertility. A variety of studies support the conclusion that LC at total daily amounts of at least 500mg  per day can significantly improve both sperm concentration and total sperm counts among men with astheno – or oligoasthenozoospermia. Although many clinical trials have demonstrated the beneficial effects of LC in selected cases of male infertility. Additional, a well – designed study is necessary to further validate the use of carnitines in the treatment of patients  with male infertility, specifically in men with poor semen  quality .    http://dx.doi.org/10.25130/tjps.24.2019.027   

scholarly journals The Association Between Abstinence Period and Semen Parameters: Results in Normal Samples and Different Sperm Pathology

2021 ◽  
Author(s):  
Min Xie ◽  
Silvan Hämmerli ◽  
Kerstin Blickenstorfer ◽  
Brigitte Leeners
Keyword(s):  
Semen Quality ◽  
Sperm Quality ◽  
Sperm Count ◽  
Sperm Concentration ◽  
Semen Parameters ◽  
Sexual Abstinence ◽  
Normal Morphology ◽  
Few Data ◽  
Total Motile Sperm Count ◽  
Abstinence Period

Abstract Purpose: The length of sexual abstinence seems to influence sperm quality. However, few data on the relevance of abstinence time in pathological sperm samples are available. With our study, we look for associations of abstinence length and semen quality. Methods: We studied semen samples from 4423 men undergoing fertility evaluation. Sperm concentration, percentage of progressively motile spermatozoa, total motile sperm count, percentage of spermatozoa with normal morphology, were compared after each day and 0-2, 3-7 and >7 days of abstinence. Results: We found that a longer abstinence time was related to higher sperm concentration in normal semen samples (P<0.001) and in semen samples with any sperm pathology (P<0.001, P=0.004) with the exception of oligozoospermia (P=0.125). Longer abstinence time was also associated with significantly reduced progressive motility in normal samples (P<0.001) and in cases of teratozoospermia (P<0.001). In normal samples a higher percentage of sperm were morphologically normal after a shorter abstinence period (P=0.03); in oligoasthenoteratozoospermia (OAT) samples, this was the case after a longer abstinence period (P=0.013). Conclusion: A longer abstinence time is associated with higher sperm concentration, whereas sperm motility is optimal after shorter abstinence times; results on morphology are controversial. The recommendation on abstinence time needs to be adjusted in relation to the parameter that needs to be improved.

scholarly journals Coenzyme Q10, oxidative stress, and male infertility: A review

2021 ◽  
Vol 48 (2) ◽  
pp. 97-104
Author(s):  
Ahmed T. Alahmar ◽  
Aldo E. Calogero ◽  
Rajender Singh ◽  
Rossella Cannarella ◽  
Pallav Sengupta ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Male Infertility ◽  
Coenzyme Q10 ◽  
Semen Quality ◽  
Sperm Count ◽  
Specific Treatment ◽  
Physiological Role ◽  
Semen Parameters ◽  
Sperm Dna Fragmentation ◽  
Male Reproductive Function

Male infertility has a complex etiopathology, which mostly remains elusive. Although research has claimed that oxidative stress (OS) is the most likely underlying mechanism of idiopathic male infertility, the specific treatment of OS-mediated male infertility requires further investigation. Coenzyme Q10 (CoQ10), a vitamin-like substance, has been found in measurable levels in human semen. It exhibits essential metabolic and antioxidant functions, as well as playing a vital role in mitochondrial bioenergetics. Thus, CoQ10 may be a key player in the maintenance of biological redox balance. CoQ10 concentrations in seminal plasma directly correlate with semen parameters, especially sperm count and sperm motility. Seminal CoQ10 concentrations have been shown to be altered in various male infertility states, such as varicocele, asthenozoospermia, and medical or surgical regimens used to treat male infertility. These observations imply that CoQ10 plays an important physiological role in the maintenance and amelioration of semen quality. The present article thereby aimed to review the possible mechanisms through which CoQ10 plays a role in the regulation of male reproductive function, and to concisely discuss its efficacy as an ameliorative agent in restoring semen parameters in male infertility, as well as its impact on OS markers, sperm DNA fragmentation, pregnancy, and assisted reproductive technology outcomes.

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