医学根据

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 哈弗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”.

哈弗大学 官网链接 : https://www.hsph.harvard.edu/news/press-releases/does-underwear-style-affect-sperm-production/