7 Must-Do's Before You Buy a 'Functional Food'

Video: Healthful Eating Recipes

Gerbstadt also advises that you take into account supplements you already take; getting both those and functional food may not be necessary. "It's not that you will be getting toxic amounts per se, but it may be toxic to your food budget," she says. "And there are plenty of examples in science that show that more isn't always better."

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