Charles H. Sawyer (neuroendocrinologist)
# Charles H. Sawyer (neuroendocrinologist)

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.

## Career

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 showed norepinephrine role in ovulation as well as oestradiol in stimulating the nervous system.

