My kids used to do this when we had that type of food in the house (junk food and soda). I quit buying it. When I started buying more vegetables and stuff that had to be cooked, they stopped taking it into their bedrooms. However, my oldest son (who is now 20 and moved out on his own), when still in high school, told his friends that we were starving him...lol. I was so mad at him at the time because I was trying so hard to make them eat healthy and all they did was complain about it, but we've been eating that way for several years and no one complains anymore.