4 Gut Bacteria that Promote Longevity

Written on 03/28/2025
Dr. William Li


More Gut Bacteria Info

Dr. William Li is a physician and scientist His books, Eat to Beat Your Diet and Eat to Beat Disease were both #1 New York Times bestsellers. He is primarily a cancer researcher and nutritionist and has been studying gut bacteria.

He’s learned that gum disease and the resulting bacteria might be a factor for dementia. That bacteria in your mouth winds up in your gut. On a good note, there is also bacteria that seems to slow the progression of Parkinson’s. That bacterium is called Lactobacillus plantarum.

He’s also learned that there are four gut bacteria that are prominent in the digestive tracts of people who are over 100 years old. 

  • Odoribacter
  • Oscillibacter
  • Christensenella
  • Akkermansia

These four bacteria lower inflammation, improve immunity, lower cholesterol, and improve metabolism.

You can find a lot of Dr. Li's videos on YouTube. Here's a short one with some quick tips: