A s you browse the internet or make online purchases, a variety of companies may be collecting information about you—including data about your health.

more on health privacy

They can use this to serve you personalized ads while you’re online or sell it to others. But if criminals get their hands on your personal info, they may try to steal from you. Health-privacy problems can crop up outside of the digital arena, too.

Here are CR’s expert tips for safeguarding your health data. To see our tips, hover your crusor over (or tap, on mobile) the black circles in the illustration below. 

Editor’s Note: A version of this article also appeared in the March 2020 issue of Consumer Reports On Health