Thirst Is a Lagging Indicator

Dr. Debbie Chen found the water signal in her own PhD data around 2007, laughed it off, and did nothing with it for a decade. Then came years of amateur Muay Thai and cramping through every session, then a dehydration health scare of her own. She’s now founder and CEO of Hydrostasis, maker of the GECA Watch, which has sold out twice. She and Neal get into why thirst is a lagging indicator, why she believes hydration is the only truly actionable thing a wrist device can measure, the multi-pivot road from collegiate sports to older adults, and the data-equity problem she won’t stop talking about. Plus El Patron in Mira Mesa - a first-time mention on the show. Key topics * From amateur Muay Thai cramps to a hydration sensor * The water signal she spotted in her PhD data and ignored for ten years * Why thirst is a lagging indicator, and why it fades with age * Hydration as the only actionable biometric on the wrist * Hardware, firmware, algorithms, and an app - three startups in one * The button older users literally could not press * Collegiate sports to clinical to DTC: the pivot path * A customer whose creatinine normalized in three months * The pulse oximeter, darker skin, and the case for data equity * Women excluded from clinical trials until 1993 * 2% body water loss and measurable cognitive decline * El Patron in Mira Mesa and the case for the shrimp cocktail Links & resources * Hydrostasis / GECA Watch * Ad Astra Ventures Connect on LinkedIn * Neal Bloom * Debbie Chen This is a public episode. If you'd like to discuss this with other subscribers or get access to bonus episodes, visit risingtidepartners.substack.com/subscribe