Increasing Roseburia Bacteria in the Microbiome for Improved Gastrointestinal Health


Roseburia is a member of the phylum firmicutes and a Gram-positive anaerobic bacteria that inhabits the human colon.  Roseburia is a genus, or group, of five species of bacteria. It was named in honor of British-born American bacteriologist and author Theodor Rosebury.


Roseburia population in the gut can be increased or decreased by a number of factors like diet and antibiotic use.  Certain health conditions are affected by an increase or decrease of Roseburia:

Increase Abundance of Roseburia

  • Weight loss  1
  • Reduced glucose intolerance  2 

Decreased Abundance of Roseburia

  • Inflammatory bowel disease  3 
  • Ulcerative colitis  (decrease in Roseburia hominis)   4

One of the main functions of Roseburia is its ability to produce the short chain fatty acid called butyrate. 

Butyrate is an important food for the colonocytes which are the cells that line the colon.  The production of butyrate by certain beneficial bacteria, including Roseburia, provides energy for colon cells.  Without this energy source, colonocytes undergo autophagy and self-digest and die.  5 

Butyrate is produced by beneficial colonic bacteria feeding on or fermenting plant material with dietary fiber, otherwise known as prebiotics. 

Increasing Roseburia population in the Gut

In order to increase the population of Roseburia, it is necessary to feed the colon with the proper dietary fiber.  There are a number of dietary fibers that have been identified for their ability to raise Roseburia levels in the colon:

  • beta-glucan (mushrooms, oats) 6
  • chitin 7
  • green banana flour 8
  • inulin  9 

Informational References:

Modulating the Gut Microbiome: The Role of Probiotics & Prebiotics – Genova Diagnostics

Microbiome tests for Roseburia can be obtained from these companies:

Genova Diagnostics