Many people undergo a juice cleanse in an effort to detoxify the body and improve health, but new research suggests they do more harm than good.

Researchers from Northwestern and San Raffaele universities found a diet of only vegetable and fruit juice, even for just three days, can lead to shifts in gut and oral bacteria linked to inflammation and cognitive decline.

The study, published in the "Nutrients" journal, looked at three groups of healthy adults following different diets. One group only consumed juice, another combined juice with whole foods, and the third ate only whole, plant-based foods.

“Most people think of juicing as a healthy cleanse, but this study offers a........

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