Downloadable software programs, or apps, for smartphones and tablet computers can help people monitor and improve their health. Apps collect information on the user that can be used to support healthy behaviors. Apps may also provide access to health information, such as healthy diets and workout routines. Some apps enable the user to share information with other users or with health care providers. Scientific proof that using apps actually improves health is sparse right now. They work best when the user is strongly motivated to change.
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