Electrolytes probably sound at least vaguely familiar to you. Maybe you think of them as something that athletes need to replenish after a vigorous competition. While that’s true for many athletes, are they something that you need to think about? Should you be swigging down neon-colored sports drinks after your daily workouts? Read on to learn more about electrolytes.
Electrolytes are minerals in the body that have an electric charge. They’re found in the blood, urine, tissues, and other body fluids. Electrolytes are essential for:
Sodium, potassium, calcium, chloride, phosphate, magnesium, and bicarbonate are electrolytes. You get electrolytes from the foods you eat and the fluids that you drink.
Here’s a rundown of what each of the electrolytes do in the body:
Helps maintain normal blood pressure, supports nerve and muscle function, and regulates fluid balance
Regulates heartbeat, helps nerve function, helps muscle contraction, moves nutrients into cells and wastes out of cells
Regulates muscle contraction, regulates heartbeat, helps with blood clotting, helps build bones, and keeps teeth healthy
Works with other electrolytes to keep the acid-base balance, helps move fluid in and out of cells, helps maintain blood pressure
Helps form bone and teeth, helps with nerve function, helps with muscle contraction
Regulates blood pressure, regulates muscle and nerve function, regulates blood sugar, makes protein, bone, and DNA
Maintains acid-base balance
Athletes are often focused on maintaining the right balance of electrolytes in order to enhance physical performance.
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The kidneys regulate bodily fluids through the amount of water that is excreted in the urine. If fluid conservation is the goal, the kidneys make urine that is concentrated; but if there is excess fluid in the body, the kidneys make urine that is very dilute. The kidneys also conserve sodium, which means that adults don’t need to consume that much sodium. But a lot of potassium is lost through the urine, so we need to consume enough potassium every day through the foods and beverages that we consume.
The balance of electrolytes in the body can be upset — meaning, electrolytes might be too high or too low. When electrolytes are too low, it’s often due to a loss of fluids, such as excessive sweating during exercise, or fluid loss due to diarrhea and/or vomiting.
Some medicines may affect fluid balance and electrolytes in the body. These include:
Having certain heart, kidney, or liver disorders, an eating disorder, alcoholism, and some forms of cancer can impact electrolyte balance, as can being given intravenous fluids in the wrong amounts.
People with type 1 diabetes who have DKA (diabetic ketoacidosis) may have an electrolyte imbalance due to severe dehydration, metabolic acidosis (too much acid in the body), hyperglycemia, and a loss of fluid and electrolytes in the urine.
Some signs of an electrolyte imbalance include:
Your health care provider can order an electrolyte panel to check for any imbalances as part of a basic metabolic panel or a comprehensive metabolic panel. These panels include measuring your kidney function and acid-base balance. Electrolytes can also be measured separately — for example, ionized calcium, serum potassium, and serum chloride.
Fortunately, it’s pretty easy to keep your electrolytes in the right balance. Here’s how:
Want to learn more about electrolytes? Read “Best Beverages for Staying Hydrated,” “The Power of Potassium,” and “Magnesium: The Forgotten Healer.”
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