It is not right to completely put the blame on kids for their disinterest in healthy food. As parents, we need to reflect on ourselves and take necessary measures for the same.
Introducing food at the right age will make your child habituated with eating all kinds of food.
Kids tend to skip chewing and try to swallow the food directly. Do not get angry, try to be patient and address the problem.
Sugar is a very tempting food item. Keep the sugar intake in check since the first day a child learns to eat; this way things will not out of hand.
When a child is ready to eat food on its own, (s)he will give you signals. Look for the signals and you will know how to help your baby.
Children learn from your behaviour. Changing your eating habits will help them develop healthy eating habits as well.