Chronic hyponatremia—long viewed as symptomless—is now shown to disrupt brain chemistry and cause anxiety-like behaviors, according to a new study in mice. Researchers found that prolonged low sodium levels reduced serotonin and dopamine in the amygdala, a brain region vital for emotional regulation.
Daily Ups and Downs in Love Are Normal, But Also Meaningful
A new study finds that relationship satisfaction fluctuates frequently—even daily—but these shifts are a normal part of romantic dynamics. Using high-frequency surveys from over 700 couples, researchers found that satisfaction often rises and falls in sync between partners.