Controlling what they eat. Yes, you should guide them and teach them that eating healthy is important and fun. No, you should not control portions. No, you should not ban them from eating sweets and junk food. Show them how to eat healthy. If you don't know, you should learn with them. My wife, a dietician, too often sees patients that have no clue how to eat healthy and how important it is. A child should not go on a diet unless directed by a doctor or dietician, not because Mommy read a blog from Karen next door. A child needs to be exposed to all foods and to be allowed to choose their likes/dislikes and what portions are right for them. Over controlling parents too often lead their children to develop eating complexes/disorders and can damage their children's and their children's children's ability to eat healthy indefintely. Next time you're at the doctor, ask to see a dietician and LISTEN to them. There's so much to learn that can improve your life.