Charles H. Sawyer

Charles H. “Tom” Sawyer (January 24, 1915 Ludlow, Vermont - June 20, 2006 Irvine, California) was an American neuroendocrinologist and Distinguished Emeritus Professor of Neurobiology at the University of California, Los Angeles. Sawyer was considered a pioneer in the field of neuroendocrinology.

At the age of 91, he died of Alzheimer’s.

Sawyer’s work at UCLA was crucial in the treatment of infertility and birth control pills.

His research showed that ovulation was controlled by the hypothalamus which was controlled by a circadian clock.He also showednorepinephrine role in ovulation as well as oestradiol in stimulating the nervous system.