Even so, "nothing is secure online" he says. "You make it as secure as possible and go forward."
In many cases, the data that can be determined from devices is not especially sensitive, says cardiologist and geneticist Eric Topol, author of "The Creative Destruction of Medicine: How the Digital Revolution Will Create Better Health Care." What would a hacker find out– that "this person has a glucose-regulation problem?" he asks, rhetorically. "I don't know that that's going to be such an incredibly important revelation."
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"I think there's too much worry and not enough optimism," Topol says about new health information technology. "There's just so much more information that can be gleaned that I think doesn't negate the [privacy] concern, but it should be potentially an overriding positive ... that that's the net benefit here."
Whatever digital tool you choose, make sure to research the privacy policies. As McGraw puts it: "My best advice to people is to be aware before you share because that's your best defense."
For more information on protecting your health data, visit the Center for Democracy & Technology, the Center for Connected Health Policy, the Federal Trade Commission's Bureau of Consumer Protection and the Department of Health and Human Services' site on patients' HIPAA rights.