White bread or whole-wheat? It may depend on your gut

By Lisa Drayer, CNN

Updated 0747 GMT (1547 HKT) June 16, 2017

It's thumbs up today, but the news on carbs has not always been positive. Take a look at the arguments for and against carbohydrates through the centuries:
Photos: Carbohydrates' health history
Carbohydrates' health history: Where do we stand now? – It's thumbs up today, but the news on carbs has not always been positive. Take a look at the arguments for and against carbohydrates through the centuries:
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Eating a healthy portion of carbohydrates might have been critical for our evolution into a highly intelligent species.
Photos: Carbohydrates' health history
2 million B.C.: Man cannot live on meat alone – Eating a healthy portion of carbohydrates might have been critical for our evolution into a highly intelligent species.
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Bread and beer were staple foods in ancient Egypt and Greece. Pictured is a limestone statuette of an Egyptian servant pressing out the fermented barley-bread from which beer was brewed.