More than 7 million Americans aged 65 and older have Alzheimer's disease, the most common form of dementia. Yet average wait times for a dementia diagnosis range from 12 months to nearly four years.

Scientists have created a blood test that can estimate when Alzheimer’s symptoms are likely to begin. By measuring a protein called p-tau217, the model predicts symptom onset within roughly three to ...

Alzheimer’s disease is diagnosed with multiple types of tests that also help to rule out other possible conditions with similar symptoms. You may have blood and urine tests, memory function tests, and ...