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Contributors to Stress Research and Understanding

Walter Cannon was an eminent American physiologist at Harvard Medical School and an early pioneer in the study of stress. In the early 20th century, he was the first to identify the body's fundamental physiological reactions to stressful events, which formed the basis for his later theory of the fight-or-flight response.

Walter Cannon

Hans Selye, who became one of the world's leading experts on stress, made a foundational discovery in the 1930s while working at McGill University. His research, originally focused on sex hormones in rats, took an unexpected turn when he observed that prolonged exposure to various negative stimuli—including extreme cold, surgical injury, excessive exercise, and shock—produced a consistent set of physiological changes. These changes included adrenal enlargement, shrinkage of the thymus and lymph nodes, and stomach ulceration. This accidental finding led him to identify and develop the theory of the General Adaptation Syndrome.

Hans Selye

Robert Sapolsky is a prominent researcher known for his work in the field of stress, as referenced in his 1998 publication.

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