evidence: Over time, excessive salt intake can lead to high blood pressure (hypertension), which stiffens and narrows the blood vessels. Blood and oxygen flow to key organs decreases. So the heart tries harder to pump blood throughout the body, which further increases blood pressure. [...] Salt affects people differently. "Some people can consume sodium with no effect on their blood pressure," says Dr. Thomas. "But for others who are ‘salt sensitive,’ even a slight increase in sodium intake wreaks havoc on the kidneys’ ability to regulate fluid, and increases blood pressure." [...] Working with your doctor to ensure that salt intake is not raising your blood pressure and impacting your heart and kidneys can have a dramatic impact on your health and longevity.