With meals, a parent should have a child drink milk or at least water. If a child doesn't want to drink either of these, fruit juice is another possibility. Sweetened drinks should be avoided. When shopping, a parent should be wary of foods that appear to be healthy. Food often has sugar added to it.
Canned fruit is an example.
This heavy syrup is mainly sugar along with the natural juices of the fruit. Presweetened cereal is another food that should be avoided. These are hard to escape since there are so many varieties of them, so one needs to make a conscious effort. Another trick that parents can use to lower their children's sugar intake is the alteration of recipes. Many recipes that call for a lot of sugar can be altered with sweet spices.