A 10-year study conducted on 1,396 elderly individuals in Japan revealed that excessive gum bleeding and gum recession can increase the risk of dementia by more than 50 percent. Among the participants, 267 were diagnosed with dementia and 194 with Alzheimer’s disease. Those experiencing the most severe gum problems exhibited a 54 percent and 61 percent higher risk of dementia and Alzheimer’s disease, respectively. The researchers emphasized that as this was an observational study, causation cannot be confirmed and larger, more diverse studies are needed to verify the results.
This decade-long monitoring investigation of nearly 1,400 elderly participants in Japan showed that gum bleeding and gum shrinkage are significant factors linked to an elevated risk of dementia, exceeding 50 percent. Globally, the burden of dementia is rapidly increasing. While there were approximately 20 million dementia patients in 1990, the number rose to 40.4 million by 2016. With aging populations in many regions worldwide, this number is projected to surpass 152 million by 2050.
In the study, researchers assessed the brain health of 1,396 dementia-free Japanese adults aged 60 and over and tracked their condition for 10 years. During this period, 267 individuals developed dementia, with 194 confirmed cases of Alzheimer’s disease. Scientists noted that those with the most severe gum bleeding issues had a 54 percent higher likelihood of developing dementia within the following decade.
The researchers stated, “These findings highlight the potential importance of preventing gum disease in reducing dementia risk from a public health perspective. Improving gum health through periodontal care may help lower the chances of developing dementia.” They also acknowledged limitations of the study, noting that it was restricted to residents of one municipality in Japan, which may limit the generalizability of the conclusions.
