Step count monitoring with Fitbit devices in the All of Us Research Program enabled quantification of the benefits of physical activity across a wide range of chronic diseases over the course of an extended time frame—a median of 4 years.

.. .increasing your step count to 10,000 from 6,000 steps per day reduces the incidence of type 2 diabetes by 56%

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Association of step counts over time with the risk of chronic disease in the All of UsResearch Program

Nature Medicinevolume 28, pages 2301–2308 (2022)Cite this article

  • Abstract

The association between physical activity and human disease has not been examined using commercial devices linked to electronic health records.

Using the electronic health records data from the All of UsResearch Program, we show that step count volumes as captured by participants’ own Fitbit devices were associated with risk of chronic disease across the entire human phenome.

Of the 6,042 participants included in the study, 73% were female, 84% were white and 71% had a college degree, and participants had a median age of 56.7 (interquartile range 41.5–67.6) years and body mass index of 28.1 (24.3–32.9) kg m–2. Participants walked a median of 7,731.3 (5,866.8–9,826.8) steps per day over the median activity monitoring period of 4.0 (2.2–5.6) years with a total of 5.9 million person-days of monitoring.

The relationship between steps per day and incident disease was inverse and linear for obesity (n = 368), sleep apnea (n = 348), gastroesophageal reflux disease (n = 432) and major depressive disorder (n = 467), with values above 8,200 daily steps associated with protection from incident disease. The relationships with incident diabetes (n = 156) and hypertension (n = 482) were nonlinear with no further risk reduction above 8,000–9,000 steps.

Although validation in a more diverse sample is needed, these findings provide a real-world evidence-base for clinical guidance regarding activity levels that are necessary to reduce disease risk.



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