To his credit, he includes references to his sources:
Articles: Agamia, Naglaa F., Tamer Abou Youssif, Abeer El-Hadidy, and Amr El-Abd. 2016. “Benign Prostatic Hyperplasia, Metabolic Syndrome and Androgenic Alopecia: Is There a Possible Relationship?” Arab Journal of Urology 14 (2): 157–62. https://doi.org/10.1016/j.aju.2016.01….
Heilmann-Heimbach, Stefanie, Lara M. Hochfeld, Ralf Paus, and Markus M. Nöthen. 2016. “Hunting the Genes in Male-Pattern Alopecia: How Important Are They, How Close Are We and What Will They Tell Us?” Experimental Dermatology 25 (4): 251–57. https://doi.org/10.1111/exd.12965.
Li, Rui, Felix F. Brockschmidt, Amy K. Kiefer, Hreinn Stefansson, Dale R. Nyholt, Kijoung Song, Sita H. Vermeulen, et al. 2012. “Six Novel Susceptibility Loci for Early-Onset Androgenetic Alopecia and Their Unexpected Association with Common Diseases.” PLOS Genetics 8 (5): e1002746. https://doi.org/10.1371/journal.pgen….
Papa, Nathan P., Robert J. MacInnis, Dallas R. English, Damien Bolton, Ian D. Davis, Nathan Lawrentschuk, Jeremy L. Millar, Gianluca Severi, John L. Hopper, and Graham G. Giles. 2018. “Early-Onset Baldness and the Risk of Aggressive Prostate Cancer: Findings from a Case-Control Study.” Cancer Causes & Control: CCC 29 (1): 93–102. https://doi.org/10.1007/s10552-017-09….
Trieu, Nelson, and Guy D. Eslick. 2014. “Alopecia and Its Association with Coronary Heart Disease and Cardiovascular Risk Factors: A Meta-Analysis.” International Journal of Cardiology 176 (3): 687–95. https://doi.org/10.1016/j.ijcard.2014….