The dietary change that I've seen make the biggest difference for pediatric patient's health is eliminating fruit juices and other high-caloric, high-sugar drinks. Kids are thirsty -- they tend to get more exercise than adults, and much of it occurs outside in the summer heat. That means they can easily consume a dozen cups of their favorite liquid every day. If they're not choosing water, that equals hundreds of excess calories and refined sugars. It's a big part of the reason we're seeing an increase in type-2 diabetes at younger and younger ages. I like to suggest starting with small adjustments. Watering down your child's juice can reduce their consumption over time. Eventually, they should be happy with just a splash of flavor in their water. You can also alternate, and eventually replace, sodas with sparkling water. Limit specialty drinks like smoothies and slushies to special occasions only. These shifts can result in major improvements in everything from inflammation to mood, without altering the food your child eats.