In Ian Lipkin et al 2017 study, high bacteroides vulgatus was reported (on average). [Index to all posts on Study] 

• “refined wheat breads .. the abundance of bacteria related to Bacteroides vulgatus, decreased..” [2013].
• “Polydextrose … BACTEROIDES: species (B. fragilis, B. vulgatus, and B. intermedius) decreased” [2000]
• “Rats on the all-rice diet had significantly lower faecal concentrations of the main menaquinone-producing bacterial species (Bacteroides fragilis and Bacteroides vulgatus) than animals on either of the other two diets ( a rice + beans diet or a stock diet)” [1990]
• The suppressive effect of bifidobacteria on Bacteroides vulgatus, a putative pathogenic microbe in inflammatory bowel disease[2003].
  • ” Bifidobacterium infantis 1222 highly inhibited the growth of B. vulgatus in the coculture”
  • “bifidobacteria-fermented milk…showed a significant reduction in the relative proportion of B. vulgatus” [2003]
• “L. reuteri strain…Bacteroides vulgatus were decreased,” [2014]
• “Lactobacillus rhamnosus GG or Lactobacillus plantarum 299v ..did not prevent colitis in B vulgatus” [2003] — technically no effect
• “pulverized petal of Rosa rugosa… the growth of Bacteroides vulgatus, Escherichia coli, Staphylococcus aureus, and Bacillus cereus was completely inhibited” [2008]

Bottom Line

Above we see a lot of items to avoid. In terms of items to take, we have just a few

• L. Reuteri probiotics
• Bifidobacteria probiotics
• Reduce consumption of beans

THIS IS NOT MEDICAL ADVICE — this post is an education summary of what has been reported on PubMed. Always consult with a knowledgeable medical professional before changing diet, supplements and prescription drugs.