Like everyone else, children need water.  For one thing, the immune system functions best when well-hydrated. Mild dehydration in children can also cause constipation and behavior changes, for example acting tired, dizzy or slow to respond.Most kids do get enough; the problem is they’re getting it in the form of fruit juice, soft drinks, energy drinks and sports drinks – all high in sugar, and most containing additional toxins as well.Sweetened drink consumption is on the rise. Soft drinks are the single largest contributor of calorie intake in the US today. About 50% of the added sugars in our diets come from sodas, sports and energy drinks, coffee beverages and fruit juice. A recent article in Pediatrics noted that energy and sports drinks are being heavily marketed to children; that energy drinks are inappropriate because they contain stimulants; and that sugary sports drinks should be avoided because they contribute to obesity.Acknowledging that many kids today are hooked on f…