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Sexton and Dugas (2009) verified the hypothesis that worrying, the core criterion of GAD, serves to avoid negative emotions. The researchers found that:
Prostaglandins
A group of physiologically active lipid compounds having diverse hormone-like effects in animals, such as regulating inflammation and body temperature.
Smooth Muscle Relaxation
A physiological process whereby the smooth muscle fibers relax, leading to a decrease in tension in the muscles found within the walls of certain hollow organs or tubes in the body, such as the intestines or blood vessels.
Vasodilation
The widening of blood vessels, which decreases blood pressure and allows increased blood flow.
Active Natural Immunity
Immunity that develops after exposure to a disease-causing organism, leading to the production of antibodies and immunological memory.
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