Widespread medical efforts to prescribe more physical activity or more regularly check in on patients’ activity levels could significantly reduce the nation’s health care costs, according to a new study from the University of Washington’s School of Medicine. The findings, published this month in the Journal of Physical Activity and Health, show that “sufficiently active” UW Medicine clinic patients who were surveyed between January 2018 and December 2020 were much less likely than inactive patients to visit a primary care doctor, go to an emergency room or be admitted to the hospital. Researchers went a step further in their analysis: If more adults in the United States were more physically…