A preclinical study published in the Journal of the American Heart Association has identified a biological mechanism linking high salt intake to premature aging of the immune system and blood vessels. Researchers at the University of South Alabama found that a high-salt diet triggers an inflammatory immune response that instructs vascular cells to enter a state of cellular senescence, a form of premature cellular aging.
According to the study, excess dietary salt does not directly damage blood vessel cells but instead activates the immune system to release a signaling molecule. This molecule then acts as a messenger, causing the cells lining the vessels to stop dividing and begin secreting inflammatory factors. This process leads to a rapid deterioration in small artery function, compromising the body’s ability to regulate blood flow.
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