Promising Alzheimer’s Marker in Blood Prompts Warning About Brain-Boosting Supplements

Summary: Elevated levels of PHGDH in the blood could signal the earliest stages of Alzheimer’s disease. Researchers caution older adults against using “brain-boosting” supplements that contain serine due to its link to PHGDH. As PHGDH is a key enzyme in serine production, elevated PHGDH levels result in increased serine levels in the brain.

Source: UCSD

Elevated levels of an enzyme called PHGDH in the blood of older adults could be an early warning sign of Alzheimer’s disease, and a study led by the University of California San Diego provides new evidence to support this claim.

In analyzing brain tissue, researchers

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