Keto and Constipation: A Comprehensive Guide

As someone who’s been on the keto journey myself, I understand the challenges that come along with the diet, especially when it comes to digestion. One problem that many fellow keto dieters have mentioned to me is constipation. It can be a surprising side effect, but I assure you, you’re not alone. Let’s dive into why it happens and how to alleviate it.

Understanding the Keto Diet

What is the Keto Diet?

The ketogenic, or “keto,” diet is a low-carb, high-fat diet. It’s designed to shift your body’s metabolism from burning glucose for energy to burning ketones, which are produced from the breakdown of fats in the liver. This metabolic state is known as “ketosis.”

How Does Keto Affect Digestion?

When you start a keto diet, you significantly cut down on carbohydrates, including many fiber-rich foods. Fiber is crucial for maintaining regular bowel movements, and a lack of it can affect your digestion. Plus, the drastic dietary change can initially shock your system, which could lead to constipation.

The Keto Diet and Constipation

Why Does Constipation Occur on Keto?

As we’ve touched on, the reduction in fiber-rich carbohydrates can decrease your fiber intake, leading to changes in bowel movements and often constipation. Additionally, some people fail to consume enough water on the keto diet, leading to dehydration, another primary cause of constipation.

The Importance of Fiber and Hydration

Fiber adds bulk to your stool, making it easier to pass, while water aids in softening the stool. Inadequate intake of either can lead to harder stools that are difficult to pass, hence causing constipation.

How to Avoid Constipation on Keto

Increasing Fiber Intake

Fiber isn’t just found in carb-heavy foods. There are plenty of keto-friendly, fiber-rich foods out there! These include non-starchy vegetables like broccoli, avocados, and leafy greens. Including these in your diet can improve your digestion while keeping you in ketosis.

Staying Hydrated

Water is critical, especially on keto. Not only does it prevent dehydration, but it also helps fiber do its job more effectively. So, remember to keep your water bottle close at all times.

Regular Exercise

Physical activity helps stimulate your intestines, improving bowel motility. A quick walk after meals or regular workouts can work wonders!

Magnesium Supplements

Magnesium is a natural laxative that can help alleviate constipation. Some people find taking a magnesium supplement beneficial. But, remember to consult your healthcare provider before starting any supplement regimen.

When to Seek Medical Help

Symptoms of Severe Constipation

While occasional constipation is normal, if it’s persistent and accompanied by symptoms like abdominal pain, bloody stool, or unexpected weight loss, it’s time to seek medical attention.

Chronic Constipation and Health Risks

Ignoring chronic constipation can lead to complications like hemorrhoids or rectal prolapse. So don’t hesitate to reach out to a healthcare professional if you’re concerned.


Keto and constipation can unfortunately go hand in hand due to the significant dietary changes involved. However, by ensuring adequate fiber intake, staying well-hydrated, incorporating regular exercise, and considering the use of supplements, you can alleviate these symptoms. Remember, while the journey can be challenging, your health always comes first!


Q1: Can I eat high-fiber fruits on a keto diet? A: Some fruits are lower in carbs and can fit into a keto diet in moderation. Berries, for instance, are high in fiber and relatively low in carbs.

Q2: How much water should I drink on keto? A: While individual needs can vary, a good rule of thumb is to drink half your body weight (in pounds) in ounces of water each day.

Q3: Can I take fiber supplements on keto? A: Yes, fiber supplements can be used on a keto diet to help meet your fiber needs. However, whole foods are always the best primary source.

Q4: Is it normal to have digestive issues when starting keto? A: Yes, as your body adjusts to the dietary changes, you may experience some temporary digestive issues, including constipation.

Q5: Can too much protein on keto cause constipation? A: It’s not usually the protein, but rather the lack of fiber and hydration that can lead to constipation on a keto diet.

Connie Greve

Connie Greve

My goal is to help you decide if the keto lifestyle is for you. I personally have experienced many health and weightloss benefits following the keto plan. I am here to give you valuable information to help you maintain a healthy lifestyle and make an informative decision.

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