Simple Blood Test Can Predict Dementia 25 Years in Advance, Study Suggests

March 11, 2026

An array of vials from blood tests.

(Gizmodo) – The blood biomarker p-tau217 has “shown the most promise in detecting Alzheimer’s in the brain,” researchers of a new study say.

Your blood might someday reveal much about the distant future of your brain health. A study out today indicates that doctors could use a biomarker in blood to predict Alzheimer’s disease in women decades before their actual diagnosis. (Read More)