A new study links poor dental health to a decline in brain volume. Maintaining good dental health might be connected to improved brain health, according to a study published in Neurology, the medical journal of the American Academy of Neurology. The research indicated a correlation between gum dise
. The research indicated a correlation between gum disease and tooth loss with reduced volume in the hippocampus, a region of the brain involved in memory, anddisease. However, the study does not establish that gum disease or tooth loss directly leads to Alzheimer’s but rather found an association.
Participants had dental exams and took memory tests at the beginning of the study. They also had brain scans to measure the volume of the hippocampus at the beginning of the study and again four years later. Researchers found that the number of teeth and amount of gum disease were linked to changes in the left hippocampus of the brain.
After adjusting for age, researchers found that for people with mild gum disease, the increase in the rate of brain shrinkage due to one less tooth was equivalent to nearly one year of brain aging. Conversely, for people with severe gum disease, the increase in brain shrinkage due to one more tooth was equivalent to 1.3 years of brain aging.
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