September 23, 2013
Crowdsourced Research Delves, Uncertainly, Into the Gut
The microbiome has been big news lately. Ninety percent of the DNA in a human body belongs to the microbes in the gut, mouth, and nose, and on the skin and genitals. Estimates of the weight of all those microbes differ, with some researchers saying it could be up to five pounds—but whatever they weigh, it's now widely agreed that they are effectively an organ of the human body.
For example, intestinal disorders such as irritable-bowel syndrome are now thought to be partly due to