Before we begin: How do you know if your fluids and electrolytes are in balance? Find out.
This tutorial walks you through everything you need to know about fluid and electrolyte balance. We explain it in plain language, step by step, so whether you are a student, a patient, or simply curious, you will come away with a solid understanding.
We cover what it is, why it matters, how it is diagnosed, and what you can do about it. Key facts are called out along the way.
What are electrolytes? Electrolytes are minerals that have an electric charge when they are dissolved in water or body fluids, including blood. The electric charge can be positive or negative. You have electrolytes in your blood, urine (pee), tissues, and other body fluids.
Electrolytes are important because they help:
Balance the amount of water in your body
Balance your body’s acid/base (pH) level
Move nutrients into your cells
Move wastes out of your cells
Support your muscle and nerve function
Keep your heart rate and rhythm steady
Keep your blood pressure stable
Keep your bones and teeth healthy
What are the different types of electrolytes in your body? The main electrolytes in your body include:
Bicarbonate, which helps maintain the body’s acid and base balance (pH). It also plays an important role in moving carbon dioxide through the bloodstream.
Calcium, which helps make and keep bones and teeth strong.
Chloride, which also helps control the amount of fluid in the body. In addition, it helps maintain healthy blood volume and blood pressure.
Magnesium, which helps your muscles, nerves, and heart work properly. It also helps control blood pressure and blood glucose (blood sugar).
Phosphate, which works together with calcium to build strong bones and teeth.
Potassium, which helps your cells, heart, and muscles work properly.
Sodium, which helps control the amount of fluid in the body. It also helps your nerves and muscles work properly.
You get these electrolytes from the foods you eat and the fluids you drink.
What is an electrolyte imbalance? An electrolyte imbalance means that the level of one or more electrolytes in your body is too low or too high. It can happen when the amount of water in your body changes. The amount of water that you take in should equal the amount you lose. If something upsets this balance, you may have too little water (dehydration) or too much water (overhydration). Some of the more common reasons why you might have an imbalance of the water in your body include:
Certain medicines
Severe vomiting and/or diarrhea
Heavy sweating
Heart, liver or kidney problems
Not drinking enough fluids, especially when doing intense exercise or when the weather is very hot
Drinking too much water
What are the different types of electrolyte imbalances? The names of the different types of electrolyte imbalances are:
Electrolyte
Too low
Too high
Bicarbonate
Acidosis
Alkalosis
Calcium
Hypocalcemia
Hypercalcemia
Chloride
Hypochloremia
Hyperchloremia
Magnesium
Hypomagnesemia
Hypermagnesemia
Phosphate
Hypophosphatemia
Hyperphosphatemia
Potassium
Hypokalemia
Hyperkalemia
Sodium
Hyponatremia
Hypernatremia
How are electrolyte imbalances diagnosed? A test called an electrolyte panel can check the levels of your body’s main electrolytes. A related test, the anion gap blood test, checks whether your electrolytes are out of balance or if your blood is too acidic or not acidic enough.
What are the treatments for electrolyte imbalances? The treatment for an electrolyte imbalance depends on which electrolytes are out of balance, if there is too little or too many, and what is causing the imbalance. In minor cases, you may just need to make some changes to your diet. In other cases, you may need other treatments. For example:
If you don’t have enough of an electrolyte, you may get electrolyte replacement therapy. This involves giving you more of that electrolyte. It could be a medicine or supplement that you swallow or drink, or it may be given intravenously (by IV).
If you have too much of an electrolyte, your provider may give you medicines or fluids (by mouth or by IV) to help remove that electrolyte from your body. In severe cases, you may need dialysis to filter out the electrolyte.
Related topics: Electrolytes.
Categories: Food and Nutrition.
Key Takeaways
Understanding fluid and electrolyte balance is an important part of taking charge of your health. Here is what to remember:
- Know the signs — Recognizing early symptoms can lead to earlier diagnosis and better outcomes.
- Talk to your provider — If you have concerns or a family history of this condition, bring it up at your next checkup.
- Stay informed — Medical knowledge evolves. Keep learning and asking questions.
- You are not alone — Many people deal with this condition. Support groups and educational resources can help.