Research in the field of Alzheimer's is delving into the changes in the brain from the age of 30 onwards, focusing on the progressive loss of synapses. A recent study alarmed the internet by suggesting a potential link between gingivitis and Alzheimer's, indicating that bacteria causing gum disease could lead to brain inflammation. While this finding is not entirely new, it does provide a mechanism for understanding how oral infections might increase the risk of Alzheimer's disease.