When Tracking Your Period Lets Companies Track You
b'Health apps can be a great way to stay on top of your health. They let users keep track of things like their exercise, mental health, menstrual cycles \\u2014 even the quality of their skin. But health data researchers Giulia De Togni and Andrea Ford have found that many of these health apps also have a dark side \\u2014 selling your most personal data to third parties like advertisers, insurers and tech companies.
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