How much juice should you let your kids drink? If they’re younger than one, zero, zilch, nada.
Fruit juice offers no nutritional benefit to children under age 1 and should not be included in their diet.
But that implies some nutritional benefit to kids over a year old. And that’s a sketchy claim at best. As nutritional consultant Dr. Mike Roussell has put it,
There aren’t any benefits to drinking fruit juice over eating whole fruits. In fact, eating whole fruit is a better choice. In regards to vegetables, the only benefit to vegetables juices is that it might enhance your consumption of vegetables; but you’ll miss out on some key health benefits by juicing.
As Dr. Royal Lee pointed out years ago, when you eat whole fruit, you get the total nutritional package: vitamins, minerals, fiber, phytonutrients. When you juice, these get delivered with concentrated sugar – sometimes even more sugar than you’d get in a can of soda pop.
And that’s not good at any age. As one 2016 review put it, while there are still research gaps to be bridged by science,
Sufficient evidence links a high intake of sugar to dental caries and obesity, and high intakes of sugar-sweetened beverages in particular to increased risk of type 2 diabetes.
Other research has confirmed that, like diet soda, fruit juice is not apt to be a “healthy alternative…to sugar sweetened beverages for the prevention of type 2 diabetes.”
“Fruit juice,” notes the AAP, “offers no nutritional benefits over whole fruit for infants and children and has no essential role in healthy, balanced diets of children.”
Whole fruit, on the other hand, has such a role. Many fruits also tend to be high in vitamin C, which is essential for healthy gums. Crunchy fruit such as apples also help stimulate saliva flow that helps protect the teeth.
And what does juice do? Bathes the teeth in sugar and acids, destroying tooth enamel and making the teeth more vulnerable to decay.
Ditch the juice. Go for the fruit.