Our eating habits in industrialized societies are far removed from those of ancient humans. This is impacting our intestinal flora, it seems, as newly discovered cellulose degrading bacteria are being lost from the human gut microbiome, especially in industrial societies.
Fiber is good for us, but a new study finds that humans are losing the microbes that turn fiber into food for a healthy digestive tract
"Throughout human evolution, fiber has always been a mainstay of the human diet," explains lead investigator Sarah Moraïs from BGU,"It is also a main component in the diet of our primate ancestors. Fiber keeps our intestinal flora healthy." Moraïs and team identified important new members of the human gut microbiome, cellulose-degrading bacteria named.
"These cellulosome-producing bacteria have been around for a long time, their ancestors are important members of the rumen microbiome in cows and sheep," explains Prof. Mizrahi from BGU, senior author of the study. The rumen is the special stomach organ of cows, sheep, and deer, where the grass they eat is converted into useful food by cellulose-degrading microbes, including.
How can you counteract this evolutionary decline? It might help to do what doctors and dieticians have been saying for decades: Eat more fiber!
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