Aroused: The History of Hormones and How They Control Just About Everything

by Randi Hutter Epstein,
Psychology Today, July 12, 2018

In a lecture delivered at the Royal College of London in 1905, Ernest Starling explained the results of the gland research he had conducted with William Bayliss. Chemical messengers, “or hormones (from ὁρμάω, I excite or arouse), as we may call them,” Starling declared, are substances secreted by a gland that travels via the blood to a distant site, where they help keep the body in balance.