# What are the long-term risks of the keto diet?

Canonical page: https://clinicsjo.com/en/faq/what-are-the-long-term-risks-of-the-keto-diet
Language: en
Category: nutrition
Publisher: ClinicsJo
Published: 2026-09-13T17:52:52.595Z
Content updated: 2026-09-13T17:52:52.595Z
Translation (ar): https://clinicsjo.com/ar/faq/what-are-the-long-term-risks-of-the-keto-diet

The keto diet is based on significantly reducing carbohydrates and replacing them with fats, which puts the body into a state of "ketosis" where it burns fat for energy [\[4\]](<https://clinicsjo.com/en/faq/what-are-the-long-term-risks-of-the-keto-diet#source-S4>). While this diet may achieve quick benefits, following it for long periods may be associated with health risks such as kidney stones, liver disease, and deficiencies in essential vitamins and minerals like folic acid, vitamin A, and vitamin K [\[4\]](<https://clinicsjo.com/en/faq/what-are-the-long-term-risks-of-the-keto-diet#source-S4>).

## Nutritional Challenges and Deficiency of Essential Elements

The keto diet is highly restrictive, as it excludes many nutrient-dense foods such as fruits, starchy vegetables, and whole grains [\[4\]](<https://clinicsjo.com/en/faq/what-are-the-long-term-risks-of-the-keto-diet#source-S4>). These foods are vital sources of fiber, iron, and other nutrients that support body health [\[2\]](<https://clinicsjo.com/en/faq/what-are-the-long-term-risks-of-the-keto-diet#source-S2>). This deficiency leads to an increased risk of constipation and may require taking fiber supplements under the supervision of a healthcare professional [\[4\]](<https://clinicsjo.com/en/faq/what-are-the-long-term-risks-of-the-keto-diet#source-S4>). Restricting entire food groups may also lead to deficiencies in vitamins and minerals necessary for vital body functions [\[4\]](<https://clinicsjo.com/en/faq/what-are-the-long-term-risks-of-the-keto-diet#source-S4>).

## The Impact of the Keto Diet on Vital Systems

In addition to nutrient deficiencies, the keto diet can affect vital body organs in the long term. Sources have indicated that continuing this regimen may increase the risk of kidney stones and may cause liver problems [\[4\]](<https://clinicsjo.com/en/faq/what-are-the-long-term-risks-of-the-keto-diet#source-S4>). Overall nutritional balance may also be affected, as the high focus on fats may not meet the body's sustainable nutritional needs, which could lead to unexpected health complications in the long run [\[4\]](<https://clinicsjo.com/en/faq/what-are-the-long-term-risks-of-the-keto-diet#source-S4>).

## Who Should Avoid the Keto Diet?

There are certain medical conditions in which following the keto diet is strictly prohibited due to high health risks. Individuals suffering from pancreatitis, liver disease, thyroid disorders, eating disorders (or a history thereof), or chronic kidney disease must avoid this regimen. Furthermore, the keto diet is not suitable for pregnant women [\[4\]](<https://clinicsjo.com/en/faq/what-are-the-long-term-risks-of-the-keto-diet#source-S4>). It is essential to always consult a nutritionist or doctor before starting any restrictive diet to assess its suitability for your health condition [\[4\]](<https://clinicsjo.com/en/faq/what-are-the-long-term-risks-of-the-keto-diet#source-S4>).

## Tips and Warning Signs

If you are following the keto diet and experience symptoms such as digestive disturbances, headaches, fatigue, or dizziness, be aware that these symptoms are known as "keto flu" and are common at the beginning of the diet [\[4\]](<https://clinicsjo.com/en/faq/what-are-the-long-term-risks-of-the-keto-diet#source-S4>). However, if symptoms are severe or persistent, you must consult a healthcare professional. Choosing a healthy, sustainable diet is key to achieving long-term health goals [\[1\]](<https://clinicsjo.com/en/faq/what-are-the-long-term-risks-of-the-keto-diet#source-S1>). For more information about different diets and how to choose the most suitable one for you, you can visit our article [Popular Diets: Your Guide to Choosing the Best One for Your Health Goals](<https://clinicsjo.com/ar/articles/popular-diets-which-one-is-right-for-you>) (Arabic).

## Medical references

- [Diets](<https://medlineplus.gov/diets.html>)

- [Some Myths about Nutrition & Physical Activity](<https://www.niddk.nih.gov/health-information/weight-management/myths-nutrition-physical-activity>)

- [Food and Nutrition - Ketogenic Diet (Keto)](<https://www.moh.gov.sa/en/healthawareness/educationalcontent/food-and-nutrition/pages/004.aspx>)

General health education; not a substitute for individualized clinical assessment.

Citation URL: https://clinicsjo.com/en/faq/what-are-the-long-term-risks-of-the-keto-diet#answer