The Swedish BioFINDER - Primary Care Study

This study, called the Swedish BioFINDER Primary Care Study, is investigating what early signs in the blood and brain can predict whether memory problems seen in primary care patients are due to Alzheimer's disease or another condition. Participants will undergo cognitive tests and biomarker measurements. **You may be eligible if...** - You are 40 years old or older - You are seeking medical care because you or someone close to you has noticed cognitive or memory problems - Your doctor suspects a possible neurodegenerative brain disease (such as Alzheimer's, Lewy body disease, or frontotemporal dementia) - You have mild cognitive decline, mild impairment, or early dementia **You may NOT be eligible if...** - You have already been diagnosed with dementia - Your cognitive decline started suddenly due to a stroke - You have a significant alcohol or substance misuse problem - Your cognitive problems can clearly be explained by another condition like severe depression, infection, or anemia - You are unwilling to attend a memory clinic for evaluation Talk to your doctor to see if this trial is right for you.