It may just be early adopter tech types who log every step they take or calorie they burn using Fitbits, Nike Fuelbands, and other devices, but that hardly means they’re the only ones who track their health.

About 7 in 10 American adults told the Pew Internet & American Life Project that they track a health indicator like weight, diet, exercise or a symptom. But despite growing buzz around the “quantified self” movement and the explosion of gadgets and apps that help people measure and analyze everything from their activity and sleep patterns to blood glucose levels and other vital signs, just a small slice of health trackers rely on high tech devices.

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“We’ve got this massive potential of a market and yet we still have relatively low uptake,” Fox said. “We don’t have the answers in terms of what will change their minds or entice them to change their habits. What we do know now is how many people are doing it and already what impact that is having. Maybe in the future, if people can be seduced to upgrade to fancier technology that will actually move the needle on their heath outcome.”

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