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Association between meteorological variables and semen quality: a retrospective study
International Journal of Biometeorology ( IF 3.2 ) Pub Date : 2021-04-08 , DOI: 10.1007/s00484-021-02112-1
Gustavo Luis Verón 1 , Andrea Daniela Tissera 2 , Ricardo Bello 3 , Gustavo Martín Estofan 4 , Mariana Hernández 4 , Fernando Beltramone 4 , Rosa Isabel Molina 2 , Mónica Hebe Vazquez-Levin 1
Affiliation  

Spermatogenesis is a temperature-dependent process, and high summer temperatures have been linked to lower sperm concentration and count. However, reports describing the association between other meteorological variables and semen quality are scarce. This study evaluated the association between semen quality and temperature, humidity, pressure, apparent temperature (AT), temperature-humidity index (THI), simplified wet-bulb global temperature (sWBGT), and sunshine duration. Semen samples were obtained at the Laboratorio de Andrología y Reproducción (LAR, Argentina), from men undergoing routine andrology examination (n=11657) and computer-assisted sperm analysis (n=4705) following WHO 2010 criteria. Meteorological variables readings were obtained from the Sistema Meteorológico Nacional. Sperm quality parameters were negatively affected in summer when compared to winter. Additionally, there was a significant decrease in sperm kinematics between winter and spring. Branch and bound variable selection followed by multiple regression analysis revealed a significant association between semen quality and meteorological variables. Specifically, changes in sunshine duration and humidity reinforced the prognosis of semen quality. Highest/lowest sunshine duration and humidity quantiles resulted in decreased sperm concentration, count, motility, vitality and membrane competence, nuclear maturity, and sperm kinematics associated to highest sunshine duration and lowest humidity. Findings from this report highlight the relevance of environmental studies for predicting alterations in male reproductive health associated to variations in meteorological variables, especially considering the current climate changes around the planet due to global warming and its consequences for human health.



中文翻译:

气象变量与精液质量的关联:一项回顾性研究

精子发生是一个依赖温度的过程,夏季高温与较低的精子浓度和数量有关。然而,描述其他气象变量与精液质量之间关联的报告很少。本研究评估了精液质量与温度、湿度、压力、表观温度 (AT)、温湿度指数 (THI)、简化湿球全球温度 (sWBGT) 和日照时间之间的关联。从接受常规男科检查 ( n = 11657) 和计算机辅助精子分析 ( n=4705) 遵循 WHO 2010 标准。气象变量读数来自 Sistema Meteorológico Nacional。与冬季相比,夏季精子质量参数受到负面影响。此外,冬季和春季之间精子运动学显着下降。分支定界变量选择和多元回归分析揭示了精液质量和气象变量之间的显着关联。具体而言,日照时间和湿度的变化加强了精液质量的预后。最高/最低日照时间和湿度分位数导致精子浓度、数量、活力、活力和膜能力、核成熟度以及与最高日照时间和最低湿度相关的精子运动学降低。

更新日期:2021-04-09
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