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A study has shown that bacteria that live in the human gut and can cause diarrhea produce electricity.
The bug Listeria monocytogenes, which can also lead to miscarriages, produces an electric current when it removes waste from its cells.
Hundreds of other bacteria, including those that cause gangrene and hospital infections, as well as insects involved in yogurt fermentation, also create "sparks".
Researchers believe that these bacteria could create "living batteries", which could lead to electricity generation by sewage plant insects.
Researchers at the University of California at Berkeley measured electrical current from Listeria monocytogenes.
The results, published in the journal Nature, suggest that the virus releases as much electricity as other bacteria known to trigger electric currents.
The author of the study, Professor Dan Portnoy, said, "The fact that many insects interact with humans, whether as pathogens or probiotics or in our microbiota
"That could tell us a lot about how these bacteria infect us or help us have a healthy gut."
Some bacteria generate electricity to remove the residual electrons, which make up the atomic particles, and to boost their energy production.
This implies that insects transfer electrons to the outside of their cells, triggering an electric current that carries the particles.
Some scientists have made a battery by gluing an electrical conductor into a vial of bacteria to generate electricity.
Many bacteria seem to produce electricity only when they need it, for example when their oxygen levels are low. According to scientists, if this process could be manipulated, it could be used to ferment foods like sauerkraut and make probiotics.
This comes after a new species of bacteria was discovered yesterday by scientists in a 64-year-old man from Cornwall.
The unidentified patient went to his doctor with cellulitis, a common infection that can make the skin red, swollen and warm to the touch.
Laboratory tests revealed that the responsible bacteria had never been previously documented but were similar to others.
The researchers called the new strain of infection Staph Cornubiensis, after the medieval name for the English historical county of Cornwall.
They believe that it is part of a group of bacteria known as Staphylococcus GIS, which are usually passed to humans by pet dogs.
It is unclear whether the patient possessed a dog or had come into contact with the animal before developing cellulite.
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