Study of promising Alzheimer’s marker in blood prompts warning about brain-boosting supplements

Elevated levels of an enzyme called PHGDH in the blood of older adults could be an early warning sign of Alzheimer’s disease. Research led by UC San Diego has consistently found high levels of PHGDH expression in brain tissue and blood samples of older adults with different stages of the disease.

Discovery of new biomarker in blood could lead to early test for Alzheimer’s disease

UC San Diego researchers discovered that high blood levels of RNA produced by the PHGDH gene could serve as a biomarker for early detection of Alzheimer’s disease. The work could lead to the development of a blood test to identify individuals who will develop the disease years before they show symptoms.