Referências Bibliográficas Travison, T. G., et al. (2007) A population-level decline in serum testosterone levels in American men. The Journal of Clinical Endocrinology & Metabolism, 92(1), 196–202. https://doi.org/10.1210/jc.2006-1375 Zitzmann, M. (2009) Testosterone and the brain. European Journal of Endocrinology, 160(6), 753–762. https://doi.org/10.1530/EJE-08-0895 Tenover, J. S. (1997) Effects of testosterone supplementation in the aging male. Journal of Clinical Endocrinology & Metabolism, 82(6), 1708–1710. https://doi.org/10.1210/jcem.82.6.3980 Carlsen, E., et al. (1992) Evidence for decreasing quality of semen during past 50 years. BMJ, 305(6854), 609–613. https://doi.org/10.1136/bmj.305.6854.609 (Relaciona-se à queda hormonal como parte de um fenômeno ambiental mais amplo) Swan, S. H. (2021) Countdown: How Our Modern World Is Threatening Sperm Counts, Altering Male and Female Reproductive Development, and Imperiling the Future of the Human Race. (Livro baseado em décadas de pesquisa sobre disruptores endócrinos)