Scientists identify over 140,000 virus species in the human gut. Viruses are the most numerous biological entities on the planet. Now researchers have identified over 140,000 viral species living in the human gut, more than half of which have never been seen before. Source 7d.
Viruses inhabit the human intestine that do not make you sick, rather they help you maintain health because they regulate the bacteria in your intestines. And the most common of these is crAssphage, a newly discovered virus that scientists say appears to be present in three-quarters of the planet's population.