Certain human gut bacteria need to be lost for a diet plan to be successful, suggested a new study.

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People accustomed to a calorie-rich diet may not be able to reap the full benefits of switching to a healthy diet immediately due to the works of the bacterial community inside the gut.
"And we've found a way to mine the gut microbial communities of different humans to identify the organisms that help promote the effects of a particular diet in ways that might be beneficial," Gordon noted.
In order to study how dietary practices influence the human gut microbiota and how a microbiota conditioned with one dietary lifestyle responds to a new prescribed diet, Gordon and his collaborators first took fecal samples from people who followed a calorie-restricted, plant-rich diet and samples from people who followed a typical, unrestricted American diet.
The researchers found that people who followed the restricted, plant-rich diet had a more diverse microbiota.
In the study, published in the journal Cell Host and Microbe, researchers also described how they found a way to mine the gut microbial communities of different humans to identify the organisms that help promote the effects of a particular diet in ways that might be beneficial.
"We hope that microbes identified using approaches such as those described in this study may one day be used as next-generation probiotics," Gordon said.
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