Eating a rainbow diet of many colors is very good advice. You can tell a lot about a food by its colors. It's actually the dominant antioxidants that gives plants their colors, such as beta-carotene making carrots orange.
I posted my first podcast episode here on steemit where I go in depth about healthy eating and foods, as well as other very useful information.
I even dedicated an entire podcast episode to superfoods and posted that here.
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