Alzheimer's & Dementia Archive

A 2025 study found that people ages 50 to 90 who received treatment within one week after a moderate or severe traumatic brain injury had a 41% lower risk of developing Alzheimer’s disease over the following three years, suggesting that early treatment may be important.

A 2025 study found that people with high amounts of daily activity at middle age and beyond reduced their risk of developing dementia compared with individuals who had the least daily activity during these life stages.

A 2025 study found that adults ages 70 and older who listened to music most days or played a musical instrument at least weekly may have a lower risk of developing dementia than those who did neither.

A 2025 study suggests that smokers who quit in middle age may, within a decade, reduce their risk of developing dementia to that of people who never smoked.

A 2025 study found that in brain MRI scans, people with any evidence of gum disease were more likely to have higher amounts of a marker for disease in the brain’s small blood vessels, compared to people without gum disease.

Many memory lapses are part of aging and don’t signal Alzheimer’s disease. Types of forgetfulness that usually aren’t symptoms of dementia include forgetting names or details temporarily, misplacing objects but retracing steps to recover them, and occasional word retrieval problems. Signs of dementia include repeating questions and stories, getting lost on familiar routes, challenges with planning or solving problems, difficulty completing familiar tasks, new problems with words in speaking or writing, and withdrawing from social activities.

Researchers have found that high blood pressure, diabetes, and smoking had the greatest association with the likelihood of a dementia diagnosis as people age. Managing these issues could offer protection.

In a 2025 study, adults 45 and older with a strong sense of purpose were 28% less likely to develop cognitive impairment or dementia compared with individuals who had a low sense of purpose.

A 2025 study of over 5,600 women and men followed for over 30 years found that following a Mediterranean diet may reduce the risk of Alzheimer’s disease and improve cognitive function. The effect is strongest in people who carry two copies of the Alzheimer’s risk gene APOE4.

The vast majority of older adults would want to know if they’re in the early stages of Alzheimer’s disease and would want a blood test to learn for certain, according to a 2025 poll. Advances in testing and treatment may fuel this desire for knowledge. There are pros and cons to knowing this information. People with an early Alzheimer’s diagnosis can plan ahead, seek support, and may feel motivated to maintain their health. But the diagnosis may jeopardize their job or insurance coverage, as well as trigger anxiety or depression.