1.低温是保证阴囊正常产生精子的前题。 The lower temperature in the scrotum is a prerequisite for normal spermatogenesis. 《牛津医学课本》第282页，32行。作者： David A. Warrell, Timothy M. Cox, John D. Firth 牛津大学出版
2.热会减少精子数量和睾丸素的产生。 Heat can reduce sperm count and testosterone production.
威斯康辛大学
官网链接： http://www.fammed.wisc.edu/files/webfm-uploads/documents/outreach/im/handout_testosterone.pdf
3.人体 睾丸的最佳温度在 31-36 °C 之间，高于此 温度 会降低DNA和精子的合成，极可能影响睾丸素的产生。
链接 http://www.anabolicmen.com/cold-showers-testosterone/
4. 越来越多的证据表明睾丸素低于正常量会导致死亡，尤其是心血管方面的死亡。 There is increasing evidence that TDS is associated with all-cause mortality and in particular cardiovascular death
—欧洲心脏学会期刊
官网链接： http://eurheartj.oxfordjournals.org/content/31/12/1436
5. 男性肥胖症与睾丸素低是相关联的。 Male Obesity Linked to Low Testosterone Levels .
University of Buffalo
官网链接： http://www.buffalo.edu/news/releases/2010/05/11311.html
6.睾丸素低 同 肥胖症 ，代谢综合 症，性功能障碍，糖尿病相关联。—美国 糖尿病 协会
官网链接 ： https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3120209/
7. ‘我们的研究首次发现证据: 男内裤会影响生育，还影响 激素在睾丸和大脑的合成‘ Jorge Chavarro 哈佛大学营养与流行病学副教授 “Beyond providing additional evidence that underwear choices may impact fertility, our study provides evidence, for the first time, that a seemingly random lifestyle choice could have profound impacts on hormone production in men at both the level of the testis and the brain”.
哈佛大学 官网链接 ： https://www.hsph.harvard.edu/news/press-releases/does-underwear-style-affect-sperm-production/
8. 精子质量差可道致习惯性流产。
Repeat miscarriages could be due to faulty sperm.
https://www.bionews.org.uk/page_140783
9. 意大利Brescia 大学发现精子数低同新陈代谢的改变，心血管病，骨质疏松关联。“Our study clearly shows that low sperm count by itself is associated with metabolic alterations, cardiovascular risk and low bone mass,” said the study’s lead investigator, Alberto Ferlin, M.D., Ph.D. He recently moved as associate professor of endocrinology to Italy’s University of Brescia from the University of Padova, where the study took place in collaboration with professor Carlo Foresta, M.D.