The Claim
The oral microbiome of Neanderthals exhibits distinct proportions of Gram-positive and Gram-negative bacterial phyla compared to those of modern humans and chimpanzees, indicating long-term shifts in oral microbial ecology associated with differences in diet and lifestyle.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
Neanderthals had different types of bacteria in their mouths compared to modern humans and chimpanzees, with varying amounts of Gram-positive and Gram-negative bacteria, which reflects differences in their diets and daily habits over time.
See the scientific wording
The oral microbiome of Neanderthals differed from that of modern humans and chimpanzees, with distinct proportions of Gram-positive and Gram-negative bacterial phyla, suggesting long-term shifts in oral microbial ecology linked to diet and lifestyle.
What a person eats changes the kinds of bacteria that live in their mouth. Meat-heavy diets feed bacteria that break down proteins and fats, making those bacteria more common. Plant-heavy diets feed bacteria that break down sugars and fibers, making those bacteria more common instead. Over time, these food choices shape the whole bacterial community in the mouth, leading to stable differences in which types of bacteria dominate. These differences are passed down through generations and become part of the population's microbial signature.
What the research says
1 studyStudy: Neanderthal behaviour, diet, and disease inferred from ancient DNA in dental calculus
Scientists found that Neanderthals had different mouth bacteria depending on what they ate—meat vs. plants—showing their oral microbes changed with lifestyle, just like the claim says.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.