Researchers from Brazil’s University of Sao Paulo School of Medicine have found that sitting for more than three hours each day is responsible for about 3.8% of all-cause deaths in over 54 countries. On average, Americans are said to spend about 13 hours per day sitting, with about 7.5 hours of sitting at work. This prolonged sitting is thought to increase the risk of diabetes, cancer, heart disease, and premature death, regardless of how physically active a person is otherwise.
The study did discover some good news: if sitting time is reduced to less than three hours per day; life expectancy may increase by an average of 0.2 years.
These findings were published in the American Journal of Preventive Medicine on March 23, 2016.