Cortisol Could Be the Next Big Wearable Tech Metric

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Cortisol tracking is coming to wearables. Here’s what continuous cortisol monitoring could reveal, why sweat sensors matter, and why context is crucial.

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Cortisol could become the next major metric in wearable health tracking, but measuring it continuously is far harder than tracking heart rate or sleep. Sweat-based sensors are making passive cortisol monitoring possible, yet a single cortisol number means very little without context. The real value will come from tracking patterns over time, alongside sleep, activity, circadian rhythm, and individual baselines.