much TV ups obesity and diabetes risk in women
(Reuters Health) - Women who are glued to the boob-tube are
also likely to watch their waistlines expand, Harvard researchers
more, some of these women may go on to develop type 2 diabetes,
according to their report, published in the April 9th issue
of the Journal of the American Medical Association
study emphasizes the importance of reducing prolonged TV watching
and other sedentary behaviors for preventing obesity and diabetes,"
write Dr. Frank B. Hu and colleagues at Harvard University
and Brigham and Women's Hospital in Boston.
of obesity among U.S. adults has increased by 74 percent since
1991, according to a recent report from the Centers for Disease
Control and Prevention (CDC). Extremely obese people have
a seven-fold greater risk of diabetes, according to the CDC
report, and are more likely to have high blood pressure and
arthritis than people with normal body weights.
current study, Hu's team looked at more than 50,000 women
participating in the Nurses' Health Study, a long-running
project begun in 1976 to follow the health of female nurses
across the U.S.
tracked the new cases of obesity and type 2 diabetes over
six years, from 1992 to 1998.
end of this period, 3,757 women (7.5 percent) had become obese,
and more than 1,500 had developed type 2 diabetes.
accounting for exercise, diet, smoking and age -- factors
that sway the risk of obesity and diabetes -- Hu's team found
that each two-hour-per-day increment of TV watching was associated
with a 23 percent increase in obesity risk and a 14 percent
increase in diabetes risk.
data provide strong evidence that sedentary behaviors, especially
prolonged TV watching, are directly related to obesity and
diabetes risk," the researchers conclude.
and type 2 diabetes are preventable, the authors point out.
the CDC recommends that people wishing to maintain good health
schedule 30 minutes of moderate physical activity each day,
and 60 minutes each day if they want to lose weight.