Co-first author Dr Joht Singh Chadan said: “Poor oral health is extremely common, both here in the UK and globally.
“When oral ill-health progresses, it can lead to a substantially reduced quality of life.
“However, until now, not much has been known about the association of poor oral health and many chronic diseases, particularly mental ill-health.
“We found evidence that periodontal disease appears to be associated with an increased risk of developing these associated chronic diseases.
“As periodontal diseases are very common, an increased risk of other chronic diseases may represent a substantial public health burden.”
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