Scientists Link 700-Species Oral Microbiome to Diet, Disease Risk and Healthier Foods
Updated
Updated · BBC.com · Sep 2
Scientists Link 700-Species Oral Microbiome to Diet, Disease Risk and Healthier Foods
3 articles · Updated · BBC.com · Sep 2
Summary
Scientists say the oral microbiome—made up of about 700 bacterial species plus fungi and viruses—depends heavily on diet, not just brushing, and can influence both dental and broader health.
Sugary foods and refined carbohydrates feed acid-producing bacteria such as Streptococcus mutans, driving cavities that affect more than 80% of Americans by their mid-30s and helping harmful microbes gain ground.
Leafy greens, tea, dark berries, cranberry juice, cheese, garlic and fermented foods may support beneficial mouth bacteria by supplying nitrate, polyphenols or competing microbes that suppress plaque, bad breath and gum-disease pathogens.
Researchers also tie poor oral microbial balance to gum disease, cardiovascular disease, diabetes, depression, Alzheimer’s, inflammatory bowel disease and higher pancreatic-cancer risk in saliva studies.
A Mediterranean-style pattern rich in vegetables, whole fruits, legumes and whole grains appears more protective overall, while scientists caution there is no single oral-health superfood and flossing and brushing still matter.