US researchers surveyed 7,338 working adults about missed work time, reduced work effectiveness and impairment of daily activities. The results showed that people who were obese and had type 2 diabetes lost 11 percent to 15 percent of work time (about 5.9 hours a week) because of health problems, compared with 9 percent of work time (about 3.6 hours a week) lost by normal-weight people.