Do you really need electrolyte supplements on a keto diet?

Embarking on a keto diet opens up a new perspective on how we view food and its impact on our health. This strategy shifts the body’s fuel source from carbohydrates to fats, leading to weight loss and potential health benefits for some people.

Electrolytes are minerals found in your body that have an electric charge. They are crucial for many bodily functions, including maintaining fluid balance, supporting nerve function, and ensuring your muscles work properly. 

Keeping these minerals balanced on a keto diet becomes even more critical, given the diet’s natural diuretic effect and the reduced intake of certain foods high in electrolytes.

The big question for many following this lifestyle is whether adding electrolyte supplements is necessary.

It’s a valid concern, considering the uncomfortable symptoms of the so-called “keto flu,” which many believe are linked to electrolyte imbalances. Symptoms like headaches, fatigue, and muscle cramps can all point to the need for a closer look at your electrolyte intake.

Does the keto diet affect electrolytes?

Yes, the keto diet can indeed affect electrolyte levels in the body. When you switch to a keto diet, your body undergoes significant changes in how it processes and retains water and minerals, which can lead to fluctuations in electrolyte levels.

The keto diet significantly alters your body’s metabolism, switching its main energy source from carbs to fats. This change triggers a loss of water and electrolytes, as lower insulin levels cause the kidneys to excrete more sodium [1]. 

Here’s how this shift affects your electrolyte balance:

  • Without regular carb intake, your body sheds sodium at a higher rate, which can quickly lead to an imbalance.
  • As your body loses water, it also loses potassium, essential for heart function and muscle contraction.
  • This mineral is vital for energy production and may decline on a keto diet without careful management.

Understanding these shifts is crucial for anyone on a ketogenic diet to prevent the symptoms often associated with starting this regimen, such as fatigue, headaches, and muscle cramps. 

Keeping a close eye on these electrolyte levels and adjusting your diet or considering supplements can help mitigate these effects.

Do I need to take electrolytes on keto?

Maintaining electrolyte balance is crucial on a keto diet, especially given the diet’s tendency to change how your body manages water and minerals. 

The low-carb nature of keto can lead to increased excretion of electrolytes like sodium, potassium, and magnesium, making it essential to ensure adequate intake to prevent symptoms like fatigue, muscle cramps, and headaches.

The good news is that several keto-friendly foods are rich in the key electrolytes: sodium, potassium, magnesium, and calcium. 

Here’s a closer look at these foods and how they can help you avoid common issues like muscle cramps, fatigue, and the symptoms often referred to as “keto flu.”

Do I need to take electrolytes on keto?


Although salt is sometimes maligned, it is necessary for preserving fluid equilibrium and healthy neuronal function—particularly during a keto diet when your body excretes more sodium than normal.

Ensuring you get enough sodium can prevent symptoms like headaches and fatigue, commonly experienced during the early stages of keto [2]. Here are practical ways to manage your sodium intake:

  • Season your meals. A little extra salt on your dishes can make a significant difference.
  • Sip on broth. Drinking a cup of bone or vegetable broth can offer a comforting way to increase your sodium levels.
  • Choose salted snacks. Opt for salted nuts and seeds for a crunchy, satisfying treat that also boosts your sodium intake effectively.

These simple steps can help balance your sodium levels, supporting your transition and sustained success on a keto diet.


In addition to being crucial for controlling blood pressure and heart rate, potassium also helps to avoid muscle cramps, which are a common side effect of low-carb diets like the keto diet

Here’s how you can ensure you’re getting enough potassium while keeping carbs in check:

  • Avocados – These are not only rich in fats but also loaded with potassium, making them perfect for keto.
  • Leafy greens – Incorporate spinach, kale, and Swiss chard into your meals for a quick potassium fix.
  • Mushrooms – Adding these to any dish can boost your potassium intake while adding flavor and texture.

Focusing on these foods will help you maintain the right potassium balance to support your body’s needs on a keto diet.


Almost 300 enzyme processes in your body, including those required for healthy muscle and nerve function, depend on magnesium. It also helps manage stress, which can be beneficial as you adjust to a keto diet. 

Here are some excellent food sources of magnesium that fit well within the keto framework:

  • Pumpkin seeds – A handful can be a great snack, significantly boosting magnesium.
  • Almonds and cashews – Perfect for a quick bite, these nuts not only add crunch but also magnesium to your diet.
  • Dark chocolate – Choose varieties with at least 70% cocoa for a treat that’s low in sugar but high in magnesium.

Incorporating these foods into your diet can help ensure you meet your magnesium needs while enjoying the benefits of keto.


Calcium is vital not only for bone health but also for proper muscle function and nerve signaling. Ensuring adequate calcium intake on a ketogenic diet is key, especially since some traditional sources like milk are higher in carbs. 

Here are some excellent keto-friendly sources of calcium:

  • Cheese – This keto favorite is versatile and calcium-rich. Enjoy it as a snack or added to various dishes [3].
  • Unsweetened almond milk – A great alternative to dairy milk, just make sure it’s fortified with calcium.
  • Leafy green vegetables – Options like kale and collard greens provide calcium with minimal carbs.

Adding these foods to your daily meals can help maintain calcium levels, supporting overall health while on keto.

How do you keep electrolytes balanced on keto?

Managing electrolyte balance is critical to maintaining health and comfort on a keto diet. To achieve this, focus on incorporating electrolyte-rich foods into your meals, staying hydrated, and considering supplementation when necessary.

Here are some practical tips for keeping these important minerals in check while you enjoy the benefits of keto:

1. Regularly include high-electrolyte foods

Making sure your diet includes foods rich in electrolytes is key to feeling great on a keto diet. Here’s how you can keep your electrolyte levels topped up:

  • Salt your food. A little extra pinch of salt can go a long way in keeping your sodium levels balanced.
  • Eat avocados and leafy greens. These are not just keto-friendly; they’re also packed with potassium.
  • Enjoy nuts and seeds, especially pumpkin seeds. These are great for a magnesium boost.
  • Include cheese and unsweetened almond milk. Excellent sources of calcium that fit perfectly into a keto lifestyle.

Including these foods in your daily meals helps ensure you’re getting the necessary electrolytes to support your body’s needs, minimizing the risk of the keto flu and keeping your energy levels stable.

2. Monitor and adjust your intake based on symptoms

Keeping an eye on your body’s response to a keto diet is crucial for managing electrolyte balance effectively. 

Pay attention to fatigue, muscle cramps, and headaches. These symptoms can indicate electrolyte imbalances.

If you notice any of these signs, increase your intake of electrolyte-rich foods like avocados for potassium, seeds for magnesium, and salt in your meals a bit more for sodium [4].

If dietary adjustments don’t alleviate symptoms, electrolyte supplements may help fill the gaps. Listening to your body and making these adjustments can help you maintain optimal health and get the most out of your ketogenic lifestyle.

Regularly include high-electrolyte foods

3. Consider supplements if necessary

Sometimes, even with a well-planned diet, you might find it challenging to maintain optimal electrolyte levels on a keto diet. This is where supplements can play a supportive role.

Look for keto supplements that provide a balanced mix of sodium, potassium, and magnesium. Steer clear of those with needless additives or additional sugar.

Use supplements, especially during the initial transition to keto or during periods of intense physical activity when electrolyte depletion is more likely.

Speak with your healthcare practitioner before beginning any supplement regimen to be sure it fits your unique needs and way of life.

Using supplements for keto can be a practical approach to preventing nutritional deficiencies and ensuring your keto journey is as smooth as possible.

4. Stay hydrated

Staying hydrated is essential, especially on a keto diet, which naturally increases fluid loss. Aim for at least eight 8-ounce glasses of water a day, adjusting based on your activity level and individual needs.

Always have a bottle nearby, whether you’re at home, at work, or on the go. This makes it easier to sip throughout the day.

If plain water doesn’t excite you, add slices of lemon, lime, or cucumber for a refreshing twist without adding significant carbs.

Proper hydration helps manage your electrolyte levels and supports overall health, making your keto experience more enjoyable and effective.

5. Utilize salt substitutes

Salt substitutes, particularly those containing potassium chloride, can be a useful tool for increasing your potassium intake without significantly raising your sodium levels. 

While salt substitutes can help boost potassium levels, they can also have a bitter taste if overused. Try adding them to your meals gradually to find the right balance of flavor.

Look for salt substitutes that contain primarily potassium chloride and minimal additives or fillers [5].

When following a keto diet, you can maintain your electrolyte balance while improving the flavor of your food by judiciously substituting salt.

In closing

Managing electrolyte balance on a keto diet is vital for feeling your best and avoiding unpleasant symptoms like fatigue, headaches, and muscle cramps. By incorporating electrolyte-rich foods into your meals and staying hydrated, you can support your body’s needs naturally. 

However, there may be times when supplementation is necessary, especially during the initial transition to keto or periods of increased physical activity.

When considering electrolyte supplements, choose high-quality options and consult with a healthcare professional if needed.

Every person’s body is unique, so what works for one individual may not work for another. Trust your instincts and pay attention to how your body responds to different dietary choices.

By prioritizing your electrolyte balance, you can support your overall health and wellness while enjoying the benefits of a ketogenic lifestyle.


What happens if you don’t take electrolytes on keto?

Without electrolytes on keto, you might experience symptoms like fatigue, muscle cramps, and headaches due to imbalances affecting hydration and nerve function.

Can you lose electrolytes on keto diet?

Yes, you can lose electrolytes on a keto diet, particularly sodium, potassium, and magnesium, through increased urine output and decreased retention.

Do I need to take supplements on keto?

While some may obtain enough electrolytes from food alone, supplements can be beneficial during the initial keto transition or for those with higher activity levels.

What is the best electrolyte for keto?

Potassium is often considered the best electrolyte for keto due to its role in muscle function and regulation of fluid balance, which is crucial on a low-carb diet.


Photograph: towfiqu98/Envato
The information included in this article is for informational purposes only. The purpose of this webpage is to promote broad consumer understanding and knowledge of various health topics. It is not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of your physician or other qualified health care provider with any questions you may have regarding a medical condition or treatment and before undertaking a new health care regimen, and never disregard professional medical advice or delay in seeking it because of something you have read on this website.