TRIAD - Tracking Risk in Integrated Alzheimer's Diagnostics.

Inclusion Criteria (patients): * Age ≥ 50 years. * Presence of a primary caregiver, i.e., a person who provides regular care and who can actively participate in the study. * Understanding of the research objectives and ability to provide informed consent. Inclusion Criteria (caregivers): * Be the primary caregiver, providing care for at least six months. * Age ≥ 18 years, to ensure the ability to understand and actively participate in the study. * Understanding of the research objectives and ability to provide informed consent. Exclusion Criteria (patients): * Age under 50. * History of previous or concomitant neurological disorders (e.g., severe cerebrovascular accidents, brain tumors, traumatic injuries affecting cognitive functions) and neurodegenerative disorders. * History of major psychiatric disorders (e.g., schizophrenia, severe bipolar disorder, untreated major depression), alcohol or substance abuse. * Medical conditions that may interfere with cognitive function (e.g., advanced renal or hepatic failure, severe respiratory disorders, untreated hypothyroidism, B12 deficiency). * Decompensated systemic diseases with clinical instability and significant organ failure. * Marked sensory limitations (hearing or vision) and/or language difficulties. * Participation in other experimental studies involving previous or current involvement in clinical trials of anti-amyloid drugs or experimental drug treatments for AD in the previous 6 months. Exclusion Criteria (caregivers): * Presence of severe active psychiatric disorders (e.g., untreated major depression, psychotic disorder, or schizophrenia). * Difficulty participating in interviews and assessments due to language barriers, cognitive deficits, or other personal limitations.