Israeli scientists from Ben-Gurion University and other scientific institutions studied the human gut microbiome to learn how its composition affects the ability to absorb different types of dietary fiber. The study was published in the scientific journal magazine Science.
Using computer DNA analysis, experts identified 25 ruminant animal genomes and 22 human genomes. It turns out that there are four separate groups of microbes that digest cellulose in humans.
Scientists have found that the prevalence of microorganisms that break down cellulose varies with diet.
The prevalence of these bacterial strains in primates is 30-40%.
In people living in rural areas and consuming a lot of fiber, approximately 20% of intestinal microbes can break down cellulose fibers.
But urban dwellers in industrialized countries had only 5% of the total diversity of such microorganisms.
“Our evolutionary analysis makes a strong case that: [эти штаммы]The researchers concluded that it “probably originated in the intestines of ruminant animals and probably passed to humans during domestication.”
Previous scientists in the name Spices that improve intestinal health.