DEAR DOCTOR K: Is watching TV worse for your health than any other activities that keep you from being active?
DEAR READER: We know that exercise is good for our health, and that too much inactivity is bad for our health. But does it make sense that watching TV is worse than other sedentary activities? Actually, it may. My colleague Dr. Robert Shmerling is an associate professor of medicine at Harvard Medical School. He noted that a recent study shows watching a lot of TV is worse for your health than other activities that involve long periods of sitting. The study Dr. Shmerling referred to enrolled more than 13,000 young and middle-aged adults. Researchers asked the study subjects how much time they spent watching TV, using a computer and driving.