From financial woes to a declining sense of smell, issues that seem unrelated to memory can signal a dementia diagnosis in someone’s future.

New blood tests measuring p-tau217 levels show promise for predicting Alzheimer's risk years before symptoms appear, though validation is still needed.

Subtle biological changes linked to Alzheimer's disease may begin as early as the late 50s—decades before memory loss or other symptoms appear—according to new research from Mayo Clinic.

Scientists say a simple at-home test could spot someone's risk of Alzheimer's disease before symptoms take hold, in what experts call a major step towards earlier diagnosis and support. The new approach uses a finger-prick blood sample and a short online brain test that people can complete from their own homes.

A blood test to screen for Alzheimer's disease in India? The rollout could make earlier and less invasive detection more accessible for patients.

Lewy body dementia (LBD) is the second-most common form of dementia after Alzheimer’s disease. However, unlike most well-known forms of dementia, LBD isn’t characterized by memory loss.

Families with rare gene mutations that cause Alzheimer's in middle age are giving scientists a unique window on the disease, and a quick way to test potential treatments.