Move over gut health — oral hygiene is the latest obsession to make us smile

In wellness, the early 2020s will be remembered as the time we went microbiome mad — “gut health” were the words on everyone's lips. But we’re learning that the secrets to longevity also lie in the mouth.

- Hayley Spencer

The oral microbiome is the second largest microbiota in the body, containing 700 different species of bacteria — and its diversity affects far more than whether we have bad breath. A growing amount of research has linked this community of microorganisms to everything from brain function to even heart disease.

Leading dentist and president of the British Academy of Cosmetic Dentistry Dr Sam Jethwa explains: “Maintaining balance in the oral microbiome is vital for healthy gums, preventing cavities and tooth decay, but it is also linked to our overall health.”

Dr Rizwan Mahmood, co-founder of dentistry clinic Ruh Dental, adds: “When this delicate ecosystem is disrupted — what we call dysbiosis — harmful bacteria can flourish. These bacteria don't just stay put. They can enter the bloodstream via inflamed gums and contribute to systemic inflammation, which is increasingly linked to chronic conditions.”