Keto Constipation: What are the Causes and How to Fix It

What is Keto Constipation?

The keto diet has taken the public by storm, combining the two critical processes of losing weight and promoting health. Embracing a high-fat, low-carb diet in enormous proportions could bring weight loss, increased energy, and mental clarity benefits. But, like any other dietary shift, this one has its share of problems. One common problem is constipation on a keto diet.

Transitioning into a keto lifestyle can be hard on our bodies as they adjust to new eating patterns. Primarily, the dramatic drop in fiber compromises digestion and gut health. The diet usually limits or eliminates fiber-rich foods such as whole grains and fruits, thus reducing fiber. This decrease can slow down our digestive system, causing constipation.

But don’t worry! This blog will help explain precisely why keto causes constipation and provide practical steps to restore your digestive health. We’ll discuss how increasing your fiber intake with nutrient-dense, fiber-rich keto foods, considering fiber supplements, and employing probiotics can work wonders on your gut health and keep you regular.

Distressed woman clutching her belly.
Distressed woman clutching her belly.

Table of Contents

What is Keto Constipation?

When you embark on a ketogenic diet, you might not expect one of the challenges you’ll face: constipation. So, what exactly is keto constipation? Simply put, it’s when you need help passing stools or go less often than necessary. Your stools can become hard and dry, making them painful to pass. Let’s explore why this happens, especially when you’re on a keto diet.

A man having a stomachache on a white background.
A man having a stomachache on a white background.

Why Does Keto Cause Constipation?

  1. Low Fiber Intake: A core component of the keto diet is cutting back on carbohydrates. This often means reducing or eliminating foods high in dietary fiber, such as whole grains, beans, and many fruits. Fiber is essential because it adds bulk to your stool and helps keep it soft, making it easier to pass. Without enough fiber, your digestive system slows down.
  2. Switch to High-Fat Foods: The keto diet emphasizes high-fat foods like avocados, cheese, and meats. This significant shift can disrupt your digestive system. Your body, which is used to processing a balanced mix of carbs and fiber, suddenly has to adjust to handling a higher fat intake. This adjustment period can slow your digestion, contributing to keto constipation from the keto diet.
  3. Dehydration: When you enter ketosis—the metabolic state aimed for in the keto diet—your body begins to burn fat for energy instead of carbs. This process can cause increased urination, which may leave you dehydrated if you don’t drink enough water. Dehydration can make stools hard and difficult to pass, adding to the problem of keto constipation.
  4. Electrolyte Loss: Along with water, you also lose important electrolytes like sodium, potassium, and magnesium on the keto diet. These electrolytes are crucial for muscle function, including the muscles in your intestines that help move stool along. An imbalance in these electrolytes can hinder your digestive system’s ability to function properly.
  5. Body’s Adaptation Period: Transitioning to a ketogenic diet is a significant change for your body. During the initial stages, your body adjusts to a new way of eating and digesting food. This adaptation period can cause temporary disruptions in your digestion, leading to issues like keto constipation.

Understanding these factors can help you manage and prevent constipation while following a keto diet. Adjusting your fiber intake, staying hydrated, and getting enough electrolytes are key steps to keep your digestive system running smoothly.

How Long Does Keto Constipation Typically Last?

Starting a ketogenic diet can be a transformative experience, but it often comes with some unwelcome side effects, such as keto constipation. Many people new to keto wonder, “How long does keto constipation typically last?” The answer varies depending on several factors, including how your body adapts to the diet, your overall health, and the steps you take to address the issue.

Initial Adjustment Period:

When you first switch to a keto diet, your body undergoes significant changes. This initial adjustment period, often called the “keto flu,” can last from a few days to a couple of weeks. During this time, your body adapts to burning fat for energy instead of carbohydrates. As a result, your digestive system may slow down.

For most people, keto constipation during this phase is temporary. Your digestion should stabilize once your body gets used to the new eating method. Typically, keto constipation resolves itself within a week or two after starting the diet.

Main Causes of Constipation on a Keto Diet

Switching to a ketogenic diet can bring about various changes in your body, one of which might be keto constipation. This condition can be frustrating and uncomfortable, especially if you’re new to keto. Understanding the main causes can help you manage and mitigate these digestive issues effectively. Here’s a detailed look at why constipation might occur on a keto diet:

  • Low Fiber Intake
Products rich in fiber - a healthy diet selection.
Products rich in fiber – a healthy diet selection.

A ketogenic diet typically involves a significant reduction in carbohydrates, which often means cutting out many high-carb, high-fiber foods such as whole grains, beans, and certain fruits. Fiber is crucial for maintaining regular bowel movements because it adds bulk to your stool and helps it retain water, making it easier to pass. Without enough fiber, your digestive tract can slow down.

Solution: To combat this, incorporate low-carb, high-fiber vegetables into your meals, like leafy greens, broccoli, and flaxseeds. These can help keep your digestion running smoothly without knocking you out of ketosis.

  • Dehydration
Young woman drinking fresh water from transparent glass.
Young woman drinking fresh water from transparent glass.

One of the immediate effects of starting a keto diet is losing water weight. As your body burns through glycogen stores, water is released and excreted. This diuretic effect can leave you dehydrated if you need to replenish fluids carefully. Dehydration can cause stools to become hard and difficult to pass, contributing to keto constipation.

Solution: Drink plenty of water throughout the day. Aim for at least 8-10 glasses or more if you’re physically active or live in a hot climate. Hydration is key to maintaining soft stools and preventing keto constipation.

  • Electrolyte Imbalance
Women sports athletes drink water with electrolytes after exercise.
Women sports athletes drink water with electrolytes after exercise.

On a keto diet, the shift in your body’s metabolism can rapidly lose electrolytes, including sodium, potassium, and magnesium. These minerals are vital for muscle function, including the muscles in your digestive tract. An imbalance in electrolytes can impair these muscles’ ability to move stools effectively.

Solution: Incorporate foods rich in electrolytes into your diet, or consider taking supplements if needed. Leafy greens, avocados, nuts, and seeds are great sources of these essential minerals. Keeping your electrolyte levels balanced is crucial for maintaining regular bowel movements.

  • Gut Bacteria Changes
3d rendered bacteria blue closeup.
3d rendered bacteria blue closeup.

The ketogenic diet dramatically alters your gut microbiota, the community of bacteria in your intestines. These bacteria play a significant role in digestion and overall gut health. The shift to a high-fat, low-carb diet can disrupt your gut bacteria as they adapt to the new food sources. This adaptation period can slow down your digestive system.

Solution: Support your gut health by including probiotic-rich foods like yogurt, kefir, and fermented vegetables, or consider a probiotic supplement. These can help maintain a healthy balance of gut bacteria and improve digestion.

  • Increased Fat and Protein Intake
Extreme close up eating breakfast food, with scrambled eggs, baked beans, vegetables, and fruits.
Extreme close up eating breakfast food, with scrambled eggs, baked beans, vegetables, and fruits.

The core of a keto diet is high in fats and proteins, which your digestive system needs to adjust to. Unlike carbohydrates, fats and proteins can take longer to digest. This change can slow the digestive process as your body learns to process these new macronutrient ratios efficiently.

Solution: To aid digestion, ensure you eat a balanced amount of fiber, fats, and proteins. Eating smaller, more frequent meals can also help your body digest these nutrients more efficiently. Additionally, consider incorporating digestive enzymes or natural remedies like ginger or peppermint to support your digestive system.

Prevent Constipation While Following a Keto Diet

Constipation is a common issue for many people starting a ketogenic diet. Fortunately, there are effective strategies you can use to prevent and manage keto constipation while enjoying the benefits of keto. Here’s how you can keep your digestive system running smoothly:

Gradual Transition

Jumping into a ketogenic diet with a drastic reduction in carbs can shock your system and contribute to digestive issues like keto constipation. Instead of a sudden switch, consider a gradual transition to lower carb intake. This allows your body more time to adapt to the new diet without overwhelming your digestive system.


  • Reduce your carbohydrate intake gradually over a few weeks.
  • Monitor how your body responds to these changes and adjust accordingly.
  • This approach helps your digestive system adjust smoothly and minimizes the risk of keto constipation.


Staying hydrated is crucial when following a keto diet. The shift to burning fat for energy causes your body to lose more water through increased urination. Without adequate hydration, stools can become hard and difficult to pass.


  • Drink at least 8-10 glasses of water per day.
  • Include hydrating fluids like herbal teas and electrolyte-infused water.
  • Pay attention to your body’s signals and drink more water if you’re thirsty or your urine is dark.

Electrolyte Balance

Maintaining proper levels of electrolytes, such as sodium, potassium, and magnesium, is essential for muscle function and overall health. These minerals help regulate the muscles in your intestines that move stool along. The ketogenic diet can quickly deplete these electrolytes, so it’s important to replenish them regularly.


  • Add a pinch of salt to your meals or drink a glass of water with a little salt to maintain sodium levels.
  • Incorporate foods rich in potassium, such as avocados and leafy greens.
  • Consider taking a magnesium supplement if you’re experiencing muscle cramps or digestive issues.

Regular Physical Activity

Young woman running on the beach.
Young woman running on the beach.

Physical activity is key in promoting healthy digestion and regular bowel movements. Exercise stimulates the muscles in your intestines, helping to move stool through your digestive tract more effectively. Incorporating regular exercise into your routine can help prevent keto constipation.


  • Aim for at least 30 minutes of moderate exercise most days of the week.
  • Walking, jogging, yoga, or cycling can be particularly beneficial.
  • Even simple exercises like stretching or a brisk walk after meals can help keep your digestion on track.

Proper Meal Planning

While the ketogenic diet is low in carbs, it is still important to include fiber-rich, low-carb vegetables in your meals. These vegetables can help add bulk to your stool and keep your digestive system functioning smoothly.


  • Include vegetables like spinach, broccoli, zucchini, and cauliflower in your daily meals.
  • Experiment with low-carb, high-fiber options like chia seeds and flaxseeds.
  • Planning your meals to ensure a good mix of fats, proteins, and fiber can help maintain digestive health and prevent keto constipation.

Foods That Can Help Relieve Keto Constipation

Sliced avocado on a cutting board.
Sliced avocado on a cutting board.

Experiencing keto constipation while on a ketogenic diet can be frustrating, but the right foods can help ease and prevent this issue. While maintaining a low-carb, high-fat diet, it’s important to include certain foods that promote healthy digestion and regular bowel movements. Here are some foods that can help relieve keto constipation:

Leafy Green Vegetables

Leafy greens like spinach, kale, and Swiss chard are low in carbs but high in fiber and nutrients. They help add bulk to your stool and support regular bowel movements without kicking you out of ketosis.


  • It is rich in magnesium, which can help relax muscles in the intestines.
  • High water content, aiding in hydration and softening stools.
  • It contains antioxidants and vitamins that support overall gut health.

How to Include:

  • Add a handful of spinach or kale to your morning smoothie.
  • Use leafy greens as a base for salads or sautĂ©e as a side dish.
  • Incorporate them into soups, stews, or keto-friendly casseroles.


Avocados are a keto superstar food because they are packed with healthy fats, fiber, and essential nutrients. Their creamy texture and mild flavor make them versatile in many dishes.


  • High in monounsaturated fats, which support heart health and digestion.
  • Contains both soluble and insoluble fiber, promoting bowel regularity.
  • Rich in potassium, an electrolyte that helps maintain muscle function in the digestive tract.

How to Include:

  • Add avocado slices to salads, omelets, or keto wraps.
  • Make guacamole for a delicious dip or topping.
  • Blend into smoothies for a creamy texture and extra nutrients.

Chia Seeds

Chia seeds are tiny but mighty when it comes to fiber content. They absorb water and expand, forming a gel-like substance that can help keep your stools soft and easy to pass.


  • It is high in soluble fiber, which adds bulk and moisture to stools.
  • It provides omega-3 fatty acids that support inflammation reduction.
  • It helps regulate bowel movements and can aid in preventing keto constipation.

How to Include:

  • Mix chia seeds into your keto yogurt or smoothies.
  • Make chia pudding by soaking them in almond milk or coconut milk overnight.
  • Sprinkle on top of salads or keto-friendly baked goods.

Nuts and Seeds

Nuts and seeds, such as almonds, walnuts, and flaxseeds, are great sources of fiber and healthy fats. They can help improve digestive health and keep bowels regular.


  • Provides a mix of soluble and insoluble fiber for digestive health.
  • They are rich in healthy fats and proteins, making them a satisfying snack.
  • It contains essential vitamins and minerals that support overall wellness.

How to Include:

  • Enjoy a small handful of nuts as a snack, or add them to salads and keto recipes.
  • Ground flaxseeds can be added to smoothies, yogurts, or keto baked goods.
  • Use nut butter as a spread on keto-friendly bread or in recipes.

Fermented Foods

Fermented foods like sauerkraut, kimchi, and kefir are excellent for supporting a healthy gut microbiome. They are rich in probiotics, which can help improve digestion and reduce keto constipation.


  • It contains probiotics that promote a healthy balance of gut bacteria.
  • It helps improve digestion and can reduce bloating and keto constipation.
  • Provides enzymes that assist in the breakdown of food.

How to Include:

  • Add sauerkraut or kimchi to your meals as a tangy, flavorful side.
  • Drink a small glass of kefir or use it in smoothies.
  • Incorporate fermented vegetables into your salads or as a garnish for main dishes.

Coconut Oil

Coconut oil for alternative therapy on white background.
Coconut oil for alternative therapy on white background.

Coconut oil is a common ingredient in keto cooking and can help alleviate constipation. Its medium-chain triglycerides (MCTs) are easily absorbed and can have a mild laxative effect.


  • It contains MCTs that provide quick energy and can help lubricate the intestines.
  • Supports the absorption of fat-soluble vitamins, which are essential for gut health.
  • It can help improve bowel movement frequency and ease constipation.

How to Include:

  • Use coconut oil for cooking or add a spoonful to your coffee or tea (a popular keto practice known as “bulletproof coffee”).
  • Drizzle over roasted vegetables or use in salad dressings.
  • Blend into smoothies for added creaminess and fat content.


While most fruits are high in carbs, berries like raspberries, blackberries, and strawberries can be enjoyed in moderation on a keto diet. They are lower in sugar and high in fiber.


  • It is packed with fiber that supports digestive health.
  • It is high in antioxidants and vitamins that can boost overall health.
  • It provides a sweet, refreshing option that can curb cravings without excess carbs.

How to Include:

  • Add a small handful of berries to your morning yogurt or smoothie.
  • Enjoy them as a snack or dessert, either fresh or frozen.
  • Mix into keto-friendly desserts or salads for a burst of flavor.

Final Thoughts

Adopting a ketogenic diet can be a powerful tool for improving your health, managing weight, and achieving your wellness goals. However, like any major dietary change, it can come with challenges, including the often-unexpected issue of constipation.

Understanding the causes of keto constipation—such as low fiber intake, dehydration, electrolyte imbalance, changes in gut bacteria, and increased fat and protein consumption—allows you to take proactive steps to address and prevent these digestive issues.

A woman posing with her hands on her stomach.
A woman posing with her hands on her stomach.

Constipation on a keto diet is typically a temporary phase as your body adapts to new eating patterns. By making informed dietary choices and staying attentive to your body’s needs, you can overcome these initial hurdles and continue enjoying the benefits of a ketogenic lifestyle.

If constipation persists or becomes recurring, consider consulting a healthcare professional for personalized advice. Every individual’s body responds differently, and having expert guidance can help you tailor your approach to suit your unique needs.

With patience, proper planning, and the right strategies, you can effectively manage keto constipation and focus on the positive changes a ketogenic diet can bring to your life. Embrace the journey, and remember that your path to health and well-being is personal, shaped by the choices you make and the knowledge you gain along the way.