Apps are incredibly valuable in tracking women’s health

Health apps might help scientists learn new truths about our bodies because we’re more honest with our phones than our doctors, says Jenna Wortham.

IN the late 1960s, an undergraduate psychology student at Wellesley College named Martha McClintock noticed something interesting: Women who spent a majority of their time together tended to get their periods around the same time.

She suspected that menstruating bodies could influence one another somehow, but it was just a hunch.