Hormone

https://en.wikipedia.org/wiki/Hormone

https://my.clevelandclinic.org/health/articles/22464-hormones

https://www.news-medical.net/health/What-are-Hormones.aspx

https://www.britannica.com/science/hormone

https://medlineplus.gov/hormones.html

https://www.hopkinsmedicine.org/health/conditions-and-diseases/hormones-and-the-endocrine-system

https://www.healthdirect.gov.au/hormonal-system-endocrine

https://www.yourhormones.info/hormones/

https://www.ncbi.nlm.nih.gov/books/NBK538498/