Stanford Startup Raises $11M to Bring Hormone Tracking to Wrist Wearables

Clair Health has secured $11 million to commercialize noninvasive hormone measurement via wristband—a device that addresses a persistent gap in consumer health hardware by enabling direct hormonal insight without blood draws. The Stanford-founded company, led by CEO Jenny Duan, is targeting menstrual cycle monitoring, fertility awareness, and perimenopause tracking. The precise mechanism for detecting hormones at physiologically relevant concentrations remains undisclosed.