Fitbit for Testosterone Junkies: Health-Tracking Gadgets Reach the Molecular Level

Cue Courtesy Cue

The experiment kicked off a year ago when Ayub Khattak, co-founder of the health-monitoring startup Cue, resolved to eat only quinoa, leafy greens, and the like. His business partner, Clint Sever, subsisted on fast food. Every day, four times a day, they measured themselves using their company’s namesake device, which can gauge testosterone, the luteinizing hormone linked to female fertility, vitamin D, and inflammation. Cue also produces an accurate diagnosis of influenza.

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