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Your blood pressure numbers might look fine — but that doesn't mean you're in the clear. UVA researchers discovered a tiny cluster of brainstem nerve cells that keeps blood pressure stable throughout the day, and losing even a few hundred of them can cause dangerous fluctuations — even when average readings appear normal. The findings could reshape how doctors think about and treat blood pressure-related heart and brain risks.
Your blood pressure numbers might look perfectly fine — but that doesn't mean you're in the clear. Researchers at the University of Virginia School of Medicine have identified a small group of brainstem nerve cells that act as a hidden stabilizing system for blood pressure. When these cells are lost or damaged, blood pressure can swing dangerously throughout the day — even if average readings remain in the normal range.
The same nerve cells have previously been found to be damaged or absent in people with multiple system atrophy, a rare and fatal neurological disorder related to Parkinson's disease, which is often marked by severe blood pressure dysregulation. The new research suggests this mechanism may be relevant to a much broader range of conditions.
Key Takeaways:
Why it matters: Standard blood pressure monitoring focuses on average values, potentially missing a significant source of cardiovascular and neurological risk. This discovery could prompt a rethink of how clinicians screen for and treat blood pressure disorders.
