Dementia

A large study of older adults in China suggests that depression can lead to a decline in memory and thinking skills by causing people to withdraw from their social circles, highlighting a potential pathway to protect aging brains.

Professions requiring constant spatial navigation physically reshape the hippocampus, the brain region Alzheimer’s attacks first. By routinely building mental maps, individuals may develop a cognitive reserve that delays the onset of severe memory loss.

New research reveals that physical social isolation harms the aging brain independently of subjective feelings of loneliness. Simulated public health interventions show that reconnecting isolated older adults can directly protect against cognitive decline.

A recent meta-analysis indicates that the four most common forms of dementia feature distinct immune system responses. These biological differences occur independently of other health conditions and might eventually guide targeted treatments for cognitive decline.

A 12-week program requiring older adults to read out loud, write by hand, and solve basic math problems for 30 minutes a day resulted in measurable improvements on cognitive tests.

People with Down syndrome face an elevated risk of developing Alzheimer's disease. A recent study indicates that simple blood tests can accurately detect early brain changes, paving the way for easier diagnosis and inclusive clinical trials.

A recent review in Molecular and Cellular Neuroscience suggests that popular weight-loss and diabetes drugs might help clear brain proteins associated with Alzheimer's disease. While animal studies show promise, human data remains limited.

High levels of a specific blood protein during midlife suggest an increased risk for vascular dementia. Researchers found evidence that this protein might alter immune activity and contribute to the gradual loss of healthy brain tissue.

A new scientific review suggests that polyphenols—natural compounds found in berries, tea, and olive oil—may help protect the brain from age-related decline. However, researchers emphasize eating whole foods over relying on high-dose supplements.

By genetically enhancing a specific protein in mice, scientists successfully reduced the toxic tau tangles associated with Alzheimer’s disease. The study offers new insights into how the brain defends itself against severe neurodegenerative damage.

A new study suggests that not all sitting is created equal. While frequent TV watching is linked to reduced brain volume, mentally engaging desk work is linked to preserved brain structure in older adults.

A new study spanning 14 years suggests that optimism could be a powerful tool for healthy aging. Researchers found that older adults with a more positive outlook on life have a 15% lower risk of developing dementia.

A new study explores the complex link between high-fat diets and Alzheimer's risk. Researchers found dietary fat is associated with faster brain atrophy in healthy older adults, but a slower rate of decline in those with mild cognitive impairment.

Anxious and easily stressed individuals face an elevated risk of developing dementia. New research suggests a biological reason behind this link: highly neurotic people tend to have fewer protective omega-3 fatty acids running through their bloodstream.