Nearly 500 million people worldwide will develop diseases due to physical inactivity between 2020 and 2030, according to a new report from the World Health Organization (WHO). Unless action is taken to address the issue, half a billion people will develop heart disease, diabetes, obesity and other noncommunicable diseases during that period, the United Nations health agency concludes in its first-ever global status report on physical activity, published Wednesday. Looking at data from 194 countries, the WHO estimates that treating new cases of those diseases will cost the global community $27 billion annually for a total of $300 billion by...