Feeling Dizzy On Keto? Here's What You Need To Know.

You may have started the keto diet and experienced feeling dizzy at some point. This common side effect can be unsettling, but it’s crucial to understand why it happens and how to address it effectively. Dizziness on keto can be caused by various factors, including dehydration, electrolyte imbalances, and low blood sugar levels. Recognizing the underlying reasons behind your dizziness is crucial for maintaining your well-being while on the ketogenic diet.

Key Takeaways:

  • Dehydration: Dizziness on keto diet can be a sign of dehydration, so ensure you are drinking enough water daily.
  • Electrolyte Imbalance: Low levels of electrolytes like sodium, potassium, and magnesium can cause dizziness, consider replenishing them through supplementation or food sources.
  • Low Blood Sugar: An abrupt drop in blood sugar levels due to carb restriction can lead to dizziness, manage your carb intake and choose lower glycemic index foods.
  • Adaptation Phase: It’s common to experience dizziness during the first few weeks of starting keto as your body adapts to using fat for energy, symptoms usually subside as you become keto-adapted.
  • Consult a Professional: If dizziness persists or becomes severe, seek advice from a healthcare provider or a registered dietitian to address any underlying issues and ensure you are following a balanced keto diet.

The Science of Keto and Dizziness

Metabolic Changes on Keto

If you’ve ever experienced dizziness while following a ketogenic diet, understanding the metabolic changes that occur in your body can shed light on this symptom. With a traditional high-carb diet, your body primarily relies on glucose for energy. However, when you switch to a ketogenic diet high in fats and low in carbs, your body enters a state of ketosis. During ketosis, your liver produces ketones from fats, which become the primary fuel source for your body and brain.

This shift in metabolism can lead to various changes in your body, including rapid weight loss, improved insulin sensitivity, and enhanced mental clarity. However, it can also cause temporary side effects such as dizziness, especially during the initial stages of transitioning to ketosis.

Why Dizziness Occurs

Keto dizziness can occur for several reasons. One common cause is the changes in electrolyte balance that occur when you first start a ketogenic diet. As your body switches from using glucose to ketones for fuel, you may experience an increase in urination, leading to the loss of electrolytes such as sodium, potassium, and magnesium. This imbalance can result in symptoms like dizziness, fatigue, and muscle cramps.

Common Causes of Dizziness on Keto

Electrolyte Imbalance

Causes of dizziness on a keto diet can often be traced back to an electrolyte imbalance. When following a low-carb, high-fat diet like keto, the body may excrete more electrolytes, such as sodium, potassium, and magnesium, leading to an imbalance. This imbalance can result in symptoms like dizziness, fatigue, and muscle cramps.


One of the primary causes of dizziness on keto is dehydration. When on a ketogenic diet, the body tends to release excess water as glycogen stores are depleted. This loss of water can lead to dehydration if an adequate amount of fluids is not consumed. Dehydration can manifest as dizziness, dry mouth, and headaches.

Dehydration is a serious concern as it can not only cause dizziness but also lead to more severe complications if left untreated. It is crucial to stay hydrated by drinking plenty of water and consuming electrolyte-rich foods to maintain balance while on the keto diet.


Hypoglycemia, or low blood sugar, can also be a factor in experiencing dizziness on keto. When carbohydrate intake is drastically reduced, blood sugar levels may drop too low, causing symptoms like dizziness, confusion, and weakness.

Awareness of hypoglycemia is crucial for individuals on a ketogenic diet, as it can be a dangerous condition if not addressed promptly. It is recommended to monitor blood sugar levels regularly and consume small, frequent meals to prevent episodes of hypoglycemia while following a keto diet.

Nutritional Deficits and Dizziness

Importance of Micronutrients

The ketogenic diet, known for its high-fat and low-carb approach, can sometimes lead to nutritional deficits if not properly balanced. Key micronutrients such as magnesium, potassium, and sodium play crucial roles in maintaining electrolyte balance in the body, which is important for proper nerve and muscle function. When these electrolytes are imbalanced, dizziness and lightheadedness can occur, often referred to as the “keto flu.”

It is important to focus on incorporating nutrient-dense foods rich in these important minerals to prevent deficiencies and alleviate symptoms of dizziness. Supplementation may be necessary in some cases, but obtaining nutrients from whole foods should be the primary goal for overall health and well-being on the ketogenic diet.

Identifying Nutrient-Deficient Foods in Keto

An important aspect of addressing nutrient deficits on the keto diet is being mindful of food choices and their nutrient content. Some common keto foods may lack important micronutrients, leading to deficiencies that can contribute to feelings of dizziness. Foods high in magnesium, potassium, and sodium can help replenish electrolytes and alleviate symptoms of dizziness often experienced in the initial stages of keto adaptation.

Keto-friendly foods rich in these important minerals include leafy greens, nuts and seeds, avocados, and low-carb vegetables like spinach and broccoli. Incorporating these nutrient-dense foods into your meals can help maintain electrolyte balance and reduce the risk of dizziness while following a ketogenic diet.

Adapting to Keto: Your Body’s Response

The Keto Adaptation Phase

After starting a ketogenic diet, your body goes through a transition phase known as the keto adaptation phase. This phase can vary in length from a few days to a few weeks, during which your body switches from primarily using carbohydrates for fuel to using fats and ketones. This adaptation is necessary for your body to become efficient at burning fat for energy.

Symptoms of Keto-Induction

Phase 1: For those new to the ketogenic diet, the initial phase of keto-induction can bring about various symptoms commonly referred to as the “keto flu.” Symptoms may include fatigue, irritability, headaches, dizziness, and sugar cravings. It is important to stay well-hydrated and replenish electrolytes during this phase to alleviate these symptoms and support your body’s adjustment to ketosis.

For instance, if you experience severe dizziness or prolonged fatigue, it is crucial to consult with a healthcare professional to rule out any underlying issues and ensure your safety throughout the adaptation process. Your body is undergoing significant changes, so paying attention to how you feel and providing the necessary support is key to successfully adapting to the ketogenic diet.

Managing and Preventing Dizziness on Keto

Balancing Electrolytes Strategically

Not getting enough electrolytes can be a common cause of dizziness on the keto diet. The body flushes out more sodium on keto as you lower your insulin levels. This can lead to an electrolyte imbalance, causing dizziness, fatigue, and muscle cramps.

The key is to make sure you are getting enough sodium, potassium, and magnesium in your diet. You can do this by adding sodium-rich foods like salted nuts, bone broth, and avocados to your meals. Taking a multivitamin or electrolyte supplement can also help balance your electrolytes.

Staying Hydrated: Tips and Tricks

  • Drink plenty of water throughout the day.
  • Include electrolyte-rich beverages like coconut water or sugar-free sports drinks.
  • Avoid excessive caffeine and alcohol, as they can dehydrate the body.

Keto dizziness can sometimes be a result of dehydration. When you are in a state of ketosis, your body uses up more water, so it’s important to stay well-hydrated. Recognizing the signs of dehydration, such as dark urine or thirst, can help you prevent dizziness.

Adjusting Your Keto Diet for Better Balance

Electrolytes are crucial for maintaining proper nerve and muscle function, and a lack of them can lead to dizziness on keto. Strategically increasing your intake of sodium, potassium, and magnesium can help prevent this.

Ensuring you are consuming enough leafy greens, nuts, seeds, and seafood can also help you get the necessary electrolytes on a keto diet. Strategically planning your meals to include these foods can make a significant difference in preventing dizziness and other keto-related symptoms.

When to See a Doctor

All ketogenic diet enthusiasts should be aware of when it’s time to seek medical help. While the keto diet is generally safe for most people, there are instances where consulting a healthcare professional is crucial.

Recognizing Serious Health Symptoms

Recognizing serious health symptoms is vital when following the keto diet. If you experience severe dizziness that persists for an extended period, fainting spells, chest pain, or difficulty breathing, it is imperative to seek medical attention immediately. These symptoms could be indicative of underlying health issues that need to be addressed by a healthcare professional.

Monitoring Changes and Understanding Risks

For individuals on the keto diet, it’s important to monitor changes in your body and understand the associated risks. Rapid weight loss, muscle cramps, irregular heartbeats, and extreme fatigue are signs that should not be ignored. It is crucial to stay hydrated, ensure an adequate intake of electrolytes, and consult a doctor if these symptoms persist.

Monitoring your body’s response to the ketogenic diet is key to ensuring your overall well-being. It’s vital to work closely with a healthcare provider to address any concerns and make necessary adjustments to your diet and lifestyle.

Final Words

Drawing together the information discussed, it’s important to remember that feeling dizzy on a keto diet is not uncommon, especially during the initial stages of transitioning to ketosis. It can be a sign of dehydration, electrolyte imbalance, or low blood sugar levels. To combat this, make sure to stay hydrated, replenish electrolytes, and consider incorporating more carbs if needed to stabilize blood sugar levels.

Listen to your body, make adjustments as necessary, and consult with a healthcare professional if symptoms persist. By being mindful of these factors and taking the necessary steps to address them, you can potentially alleviate feelings of dizziness and continue on your keto journey with greater comfort and success.


Q: Why do some people feel dizzy on keto?

A: When starting a keto diet, dizziness can occur due to the body adjusting to lower carbohydrate intake and entering a state of ketosis. This shift in energy sources can lead to dehydration and electrolyte imbalances, resulting in dizziness.

Q: How can dehydration contribute to dizziness on keto?

A: Dehydration is a common cause of dizziness on a keto diet as the body excretes more water in the initial stages of ketosis. It is important to increase water intake and electrolytes to prevent dehydration and reduce dizziness.

Q: What role do electrolytes play in preventing dizziness on keto?

A: Electrolytes such as sodium, potassium, and magnesium are necessary for nerve and muscle function. Imbalances in these electrolytes can lead to dizziness and other symptoms. Supplementing with electrolytes or consuming foods rich in them can help alleviate dizziness on keto.

Q: How can blood sugar fluctuations impact dizziness while on keto?

A: On a keto diet, blood sugar levels tend to stabilize as carbohydrates are restricted. However, if blood sugar drops too low (hypoglycemia), dizziness can occur. It is important to monitor blood sugar levels and consume balanced meals to prevent blood sugar fluctuations and dizziness.

Q: When should I seek medical help for dizziness on keto?

A: While dizziness is a common side effect when starting a keto diet, persistent or severe dizziness should not be ignored. If dizziness is accompanied by chest pain, fainting, severe headaches, or other concerning symptoms, it is important to seek medical attention promptly.

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