Alzheimer's disease: New blood tests and dietary insights

New developments in the detection and prevention of Alzheimer's disease are emerging through both diagnostic technology and nutritional research. In the United States, the Food and Drug Administration has cleared two blood tests, Lumipulse and Elecsys, to assist in identifying Alzheimer's biomarkers in adults aged 55 and older experiencing cognitive decline. These tests measure specific proteins, such as amyloid and tau, which are hallmarks of the disease. Unlike invasive spinal taps or expensive PET scans, these tests utilize routine blood draws to help clinicians identify amyloid pathology.

Complementing diagnostic advancements, research continues to highlight the role of diet in maintaining brain health. Studies, including the long-term Rotterdam study, suggest that a diet rich in vegetables, fruits, nuts, whole grains, fish, and dairy may be associated with larger brain volume. Specifically, nuts such as almonds, hazelnuts, and walnuts may help prevent Alzheimer's by lowering cholesterol, reducing oxidative stress, and providing anti-inflammatory benefits.