Well I have to disagree with those that said it is making a habit that is hard to break. It could, but it may not. And there are lots of things that can make watching TV to fall asleep helpful or hurtful. I knew someone who watched TV all the time as a child. Usually past 1 am. I was horrified as a child, since I was not allowed to watch TV much, and did not have a TV in my room. I never once fell asleep with the TV on. But I had sleep issues. She had it on every night and fell asleep to it. As an adult she stopped doing it. She does not need the TV on to fall asleep. I, on the other hand cannot fall asleep well with out the TV on. I will up most of the night if I do not have it on. And yes it will be on most of the night after I fall asleep. So here are two examples that completely go against the theory that it will cause sleep problems. But in reality it can set up a habit. Now is my life ruined because I need to fall asleep to the TV? No, it is a tool I use to help M.. Due to my past I have sleep issues, that I have had for much of my life, nothing at all to do with TV. The TV helps M.. I don't need it, but I sleep much earlier with it. So I use it. Reading doesn't help M., it keeps M. awake longer. Other things like music don't help M.. For M. it is an aid to help M. sleep. There is nothing wrong with it. I didn't figure it out until I was well into adulthood. Wish I would have had it earlier in life. So TV can be a help to someone with sleep issues. Starting it young may or not develop into a lifetime habit, but all can be can broken. So if she does develop a habit it can be changed. As long as there is no other other underlying reason for sleep problems. I smoked for many years and then I quit. It was a bad habit, and additive habit, that was not only emotionally addictive, but physically as well. I changed it. So take everything into consideration when deciding these things. J. because you do something as a child does mean it will become a habit, and J. because you don't, doesn't mean you won't start doing it as an adult. I have occasionally let my son watch TV before bed, but only a few times. My daughter on the other hand watches it almost every night. Everyone is different. Make the best decision you can for you and your child. And if watching TV before bed is best for you both, then no one can tell you different. It may not be best for them, and it may go against their own choices, but that doesn't mean you or I or anyone else can't choose something different.