RAMAT-GAN, Israel — Your blood test results might be “normal,” but still put you at risk for serious heart problems. A major international study found that people with serum sodium levels at the upper ...

Having a "high normal" serum sodium level in midlife, which reflects less than optimal fluid intake, is associated with an increased risk for left ventricular hypertrophy — a heart failure (HF) ...

This exploratory study in healthy young adults found that plasma sodium levels within the normal clinical range are ...