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Diets cause a gut reaction

Changing the food you eat can change the bacteria in your gut in as little as one day, writes Elizabeth Lopatto.

A change in diet quickly alters the types of bacteria living in the Equipoise E Equifort human gut, a finding that suggests this rapid adaptability to different foods can be used to control illnesses tied to stomach microbes, researchers say.

Switching to an animal based diet increases the number of microorganisms that process protein, while a plant based diet increases the number of bacteria that help process starch and cellulose, according to a study led by Harvard University researchers published in the journal Nature. The change in the bacteria populations occurred within a day.

Trillions of microorganisms live in the human gut, helping to digest food, fight disease causing germs and process nutrients. Previous work in mice suggests the microbiome could change within a day, though until now, the effect hadn't been replicated in humans.

"It's exciting and gratifying to find out this holds up in people," says Lawrence David, one of the Harvard researchers and now an assistant professor at Duke University's Molecular Genetics Microbiology and Institute for Genome Sciences and Policy. "We're getting an increasing Deca Durabolin For Sale Canada appreciation of how flexible and responsive the microbiome is, even on a very short time scale."

Humans are home to "Achat Anabolisant Belgique" more than 10,000 species of microbes, mostly bacteria that live in healthy symbiosis, according to the Human Microbiome Project. The trillions of microorganisms that live in and on the body outnumber human cells by "Buy Cheap Jintropin Online" 10 to one, according to research published in 2012 in Nature and the Public Library of Science journals.

Scientists are just beginning to explore the composition of these ecosystems, says David. Knowing how these organisms interact with their host can reveal more about "buy cheap jintropin online" illnesses such as inflammatory bowel disease and obesity.

The 11 people studied were allowed to eat as "Oxandrolone Powder India" they normally did for four days, writing down what they ate and submitting fecal samples to the researchers. Then they consumed what was provided to them by researchers for four days, and were watched Buy Cialis Norway for six days afterward. That meant that each person essentially served as their own control group, David said.

The plant based diet, which boosted fibre intake significantly and dropped fat and protein intakes, led to very few changes in the existing microbes. The animal based diet had almost no fibre intake had a "really big shift," David said.

The animal based diet caused changes in the population, including an increase in the anaerobic bacteria Bilophila wadsworthia, which is known to cause colitis in mice. The bacteria seem to thrive with the increased intake of fat, David said. Some bacteria also changed their gene expression with the diet, the study found.

"Perhaps in prehistoric groups, when there was a lot more volatility in terms of what you can forage or hunt for, this could have been very useful," David says. "It creates a way of buffering nutritional changes and may Buy Anadrol Cheap have enabled ancient humans to be a little more flexible with their diet."

Further research may focus on how food preparation affects the bacterial colonisation, David said.