In the United States, we are all familiar with the human sexual double standard from our developmental years in High School. Girls who &quo...
Yes, you read the title correctly. Other primates have spiny penises, including our closest cousins. The question is: why don't we? Se...
Anyone who has ever kept a pet rabbit has seen Mister Hoppypants gobble up feces like it was Cocoa Puffs. Bunnies like poop! So do hamster...
Would it surprise you to learn that some animals routinely engage in what can best be described as heavy petting? Indeed male and female s...
Get your tickets while you can -- if you happen to be anywhere near London in the coming months. The Natural History Museum just opened...
Imagine you are a theoretical male mammal. You recently hit puberty and are on the prowl. By this, of course, I mean you go out looking f...
People spend a lot of time talking about the size of male genitals. One has only to type "jokes about penis size" in Google to...
Life as a sea turtle can be rough. Not only do you sometimes have to migrate hundreds to thousands of miles to reproduce, sometimes you get...
Remember your high school prom? Some of you were fortunate to secure a date right away. If so, this article is not about you. But you ca...
VermilionToday.com - Whooping Cranes return to White Lake Image courtesy of Whooping Crane Eastern Partnership In a week in which the an...
Friday, March 11, 2011
Why do they eat poop? The answer might save your life!
Assuming that you do not occasionally sample your own stool, news of this phenomenon may be somewhat hard to swallow. (ba-dum-bump) There are, however, a number of good reasons why it makes biological sense.
For herbivores that (lacking the enzyme to break down plant cell walls) are unable to completely digest food the first time around, re-eating food as feces gives the digestive system more time to break it down. It may also help the animal reclaim limiting vitamins and nutrients. It might remove cues that a predator could use to find the pooper.
Or, as Nicola Jones writes for Nature.com, eating fecal material might prevent pathogens from killing you.
According to a study presented by Brett Finlay (University of British Columbia) at the International Human Microbiome Conference, mice that ingested particular kinds of poo were far more likely to survive exposure to gut pathogenic bacteria. The experimental design was straightforward: one strain of mice was resistant and a second strain susceptible to Citrobacter rodentium (the pathogenic bacterium). Dr. Finlay killed all the bacteria in the susceptible mice with antibiotics and then fed them feces from resistant mice. The resistance was thereby transferred and most of the recipients survived. The key appears to be that other bacteria living in the guts of resistant mice prevent the pathogen from doing damage.
While this approach is new, it nonetheless may not come as much surprise to the medical community. After all, they have been performing fecal transfusions for years.
What? You've never had a fecal transfusion?
For some forms of colitis, medical practitioners will administer enemas of gut bacteria from the feces of close relatives to the patient. A 2003 study published in the journal Clinical Infectious Diseases by Johannes Aas and colleagues found that most patients treated with donor stool survived diarrhea and colitis associated with the bacterium Clostridium difficile. They further reported that "no adverse effects associated with stool treatment were observed."
That's good, because just reading about how the enemas were prepared using household blenders and coffee filters had an adverse effect on me.
And I think I will skip that bowl of Cocoa Puffs this morning.
To read more, visit Nature.com: