Among the bacteria that convert nitrates to nitrites, one type (Rothia dentocariosa) is very common and makes up about 8% of oral bacteria in most people, while another type (Propionibacterium acnes) is very rare and only found in a small percentage of people.
Scientific Claim
Among the 20 nitrate-reducing bacterial species examined, Rothia dentocariosa had the highest mean relative abundance (7.9%) and was detected in all participants, while Propionibacterium acnes had the lowest relative abundance (0.0002%) and was detected in only 6% of participants.
Original Statement
“Rothia dentocariosa had the highest mean relative abundance (7.9%) and was detected in all participants, whereas Propionibacterium acnes had the lowest relative abundance (0.0002%) and was detected in only 6% of participants.”
Evidence Quality Assessment
Claim Status
appropriately stated
Study Design Support
Design supports claim
Appropriate Language Strength
association
Can only show association/correlation
Assessment Explanation
This is a descriptive finding about the distribution of specific bacterial species, which is accurately reported without causal language.
Evidence from Studies
Supporting (1)
Association Between Nitrate‐Reducing Oral Bacteria and Cardiometabolic Outcomes: Results From ORIGINS