You can probably guess what kids should eat every day to keep their immune systems healthy: foods high in antioxidants, and that’s mainly fruits and vegetables. The research on the benefits to children’s immune system is beyond contestation (one of my favorite words).

Apples, oranges, strawberries, blueberries, and on and on and on. How you present them is up to you. I would avoid fruits juices even if you juice foods at home; you want every vitamin, mineral, and phytonutrient antioxidant you can give them, and the fiber helps feed the good bacteria that are important to the . . .

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