The researchers from the Dunedin Multidisciplinary Health and Development Research Unit assessed about 1,000 people born in 1972-73, at regular intervals until age 26. They investigated associations between childhood TV viewing and body-mass index, or BMI, cardio-respiratory fitness, cholesterol level, smoking status and blood pressure. They found that even an average week-night viewing of one to two hours between the ages of 5 and 15 was associated with higher body-mass indices, lower cardio-respiratory fitness, increased smoking and raised cholesterol. This was the case even after adjustment for such factors as childhood socio-economic status, BMI at age 5, and the BMIs and smoking habits of parents.
A study published last week in the medical journal The Lancet shows that if you watch two or more hours of TV a day as a child, you’ll grow up to be a fat, cholesterol-clogged smoking adult. Period. Here are some of the findings, from AP via thestar.com: