Letters Section Editor: Stephen J. Lurie,
MD, PhD, Senior Editor.
In Reply: Drs Redelmeier and Stanbrook raise
the interesting hypothesis that television content rather than sedentary behavior
may be responsible for an association between prolonged television watching
and risk of obesity. This hypothesis is difficult to test in epidemiologic
studies because television contents are challenging, if not impossible, to
measure in uncontrolled settings. In our study, we specifically asked about
sitting at home watching television, and thus, our measure of prolonged television
watching indeed represents a sedentary activity. Although any prolonged sedentary
behavior is unhealthy, television watching may confer even greater risk of
obesity and type 2 diabetes than other sedentary behaviors because of the
combination of decreased activity and increased caloric intake.
Hu FB, Manson JE. Television Viewing and Risk of Obesity—ReplyTelevision Viewing and Risk of Obesity—Reply. JAMA. 2003;290(3):332. doi:10.1001/jama.290.3.332