What does it mean when your sodium levels are high?

As a medical professional, I can explain that high sodium levels in the blood, a condition known as hypernatremia, can have several implications for a person's health. Firstly, it often indicates a state of dehydration, where the body has lost more water than it has taken in. This can be due to various factors such as excessive sweating, vomiting, diarrhea, or not consuming enough fluids. Secondly, in some cases, hypernatremia can result from an increased intake of salt without sufficient water intake. This can be a concern, especially for individuals who consume a diet high in sodium. Additionally, certain medical conditions can lead to high sodium levels. For instance, Cushing syndrome is a hormonal disorder that can cause an imbalance in electrolytes, including sodium. Another condition to consider is diabetes insipidus, which is caused by a deficiency in antidiuretic hormone (ADH). This hormone helps the body retain water and regulate the amount of water in the blood. When there is too little ADH, the body cannot retain water properly, leading to an increase in sodium levels. It's important to address hypernatremia promptly, as it can lead to serious complications if left untreated. Treatment typically involves correcting the underlying cause and restoring the body's water balance.

A high blood sodium level (hypernatremia) is almost always caused by losing too much water (dehydration) without drinking enough water. In rare cases, it may be due to increased salt intake without enough water, Cushing syndrome, or a condition caused by too little ADH called diabetes insipidus.