Google searches for cortisol, the main stress hormone, have risen 110% in the U.S. over the past year, with trends like “cortisol trigger foods” gaining popularity, though scientists warn against the idea of detoxing this vital hormone. Cortisol, produced by the adrenal glands, is crucial for regulating immune response, energy conversion, and the sleep-wake cycle, following a daily rhythm that peaks in the morning and decreases by evening. While an acute stress response is beneficial, experts emphasize the importance of maintaining balanced cortisol levels, as both excess and deficiency can cause health issues.