OriginThe earliest known uses of the phrase “cortisol spike” as a meme format appeared on X (formerly Twitter) in late February and early March 2025. The cortisol meter image remained central, now used as both a joke and a pseudo-diagnostic visual. Meme Fusion and Agartha CrossoverIn late January 2026, the Cortisol Spike meme underwent further evolution through a crossover with the Agartha meme. Despite the thematic shift, creators continued to rely on the original cortisol level meter image, preserving visual continuity across meme iterations. LegacyAs of early 2026, Cortisol Spike functions as both a reaction meme and a flexible commentary tool across multiple online subcultures.