Children watching TV
We know screen time increases your child's risk of obesity, but a new study shows certain screens may be worse than others.
Researchers say only TV is associated with heavier kids.
Computers, smartphones and tablets don't seem to have the same effect on weight.
Why is there a difference?
The study's lead author says hands are free while watching TV, allowing children to snack.
Computers, video games and texting are more engaging.