Alzheimer's Archive

Some scientists believe that microbes might play a part in Alzheimer's disease development. They say it could be that certain viruses or bacteria that infect the brain aren't completely eradicated by the immune system, which leads to neuroinflammation and brain cell death. It could also be that microbes trigger the release of protein deposits-amyloid-beta plaques and tau tangles-which kill neurons, further increase neuroinflammation, and lead to more neuron death.

About three million American adults have epilepsy, which is marked by recurring seizures. But far more people will have a seizure that strikes for another reason. Seizure triggers include high fever, head injury, extreme lack of sleep, blood sugar fluctuations, alcohol or drug misuse, certain medications, brain infections, stroke, and eclampsia. People can help someone having a seizure by moving them away from hazards, preventing choking, and tracking details. Most seizures are not a medical emergency.

A 2024 study suggested that closely following the MIND diet, which emphasizes plant-based foods and limited animal products and saturated fats, may slow cognitive decline compared to other eating patterns.

A study of more than 121,000 people without dementia (ages 40 to 70) found that those who ate the most flavonoid-rich foods-six servings per day-had a 28% lower risk of developing dementia over the following nine years, compared to those who ate the least.

In a 2024 study of 900 dementia-free older adults, those who developed mild cognitive impairment had lower levels of life purpose and personal growth years before a diagnosis, compared with those whose thinking skills remained sharp.

The Brain Care Score is a quiz developed to help people identify proven, actionable steps to lower their risk of stroke, dementia, and depression. It includes four physical components (blood pressure, blood sugar, cholesterol, and body mass index); five lifestyle components (nutrition, alcohol intake, smoking, aerobic activities, and sleep); and three social-emotional components (stress management, social relationships, and meaning in life). Each response is given a point value, with the highest possible score totaling 21. Higher scores mean better brain care.

A 2024 study involving more than 149,000 people, middle-aged and older, found that those who had shingles were 20% more likely to notice signs of cognitive decline years later, compared with those who didn't have shingles.