How Long Does It Take To Get Into Ketosis? (2024)

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How Long Does It Take To Get Into Ketosis? (1)

Alexis Williams

January 31, 2023

5

min read

How Long Does It Take To Get Into Ketosis? (2)

Reviewed by:

Adele Morris

How Long Does It Take To Get Into Ketosis? (3)

The ketogenic diet — a high-fat, low-carb diet — has become increasingly popular in recent years for its various benefits. One of the main goals of this diet is to enter into a state of ketosis, which is when your body burns fat for energy instead of carbohydrates and releases ketones. But how long does it take to get into ketosis? In this blog, we'll answer this question, discuss the factors that influence how long it takes to get into ketosis, and provide tips for getting there as quickly as possible.

How Long Does It Take To Go Into Ketosis?

Although it is possible to enter into a mild-to-moderate state of ketosis without a specific protocol, you can achieve a more intense form of ketosis through the use of a ketogenic diet. Ketosis has many benefits for your health. So how many days does it take to get in ketosis?

It generally takes anywhere from two to four days to get into ketosis once you begin a ketogenic diet. However, how long to get into ketosis can vary based on the individual.

It's important to note that many variables can affect how long it takes to get into ketosis, including:

  • Activity level
  • Hunger
  • Carb intake
  • Hydration
  • Age
  • Metabolism
  • Lifestyle

However, there are a few simple steps you can take for a keto boost that speeds up the process. In some cases, you can even enter into ketosis within 24 hours.

How To Get Into Ketosis in 24 Hours

You can shorten the length of time it takes to get into ketosis in several ways: diet changes, intermittent fasting protocol such as speed keto, and intense exercise.

Diet Changes

You can make several diet changes to reach ketosis in 24 hours, including:

  • Increasing your fat intake
  • Cutting out added sugars and processed snacks
  • Eating moderate amounts of protein
  • Consuming an abundance of non-starchy vegetables
  • Taking supplements such as exogenous ketones2

How Long Does It Take To Get Into Ketosis? (4)

Intermittent fasting

Combining these ways of eating along with intermittent fasting — a fasting schedule of a few hours (8 to 36 hours) followed by a short period of eating — is another way to effectively speed up ketosis. You can try several fasting regimens, such as 16:8 and 20:4 fasts. A 16:8 fast means you abstain from food for 16 hours and eat in an 8-hour window. Other common fasting regimens include an alternate-day fast, a 24-hour fast, and a 36-hour fast.

Speed Keto

One meal a day, or OMAD, is a popular intermittent fasting protocol. When combined with a high-fat keto diet, OMAD protocol can get you in the fat-burning state usually within 24 hours. This technique is also referred to as speed keto3. However, remember to keep your body nourished with hydration, electrolytes, and vitamins during the fast. Also, avoid big meals during the non-fasting time to reap maximum benefits.

As with any fasting and diet regimen, it's always a good idea to follow guidelines from a nutritionist or a professional dietician to avoid unanticipated health risks. Also, people with conditions like Type 1 diabetes should seek medical advice before making dietary and lifestyle changes.

Intense Exercise

According to a study conducted by Brigham Young University1, exercising intensely at the start of a fast accelerates ketone production. The study published in Medicine & Science in Sports & Exercise concluded that participants could get into ketosis 3.5 hours earlier when the fast was started with an exercise. Not only did exercise improve the metabolic outcomes of fasting, but it also did so without any additional subjective feelings of hunger, thirst, discomfort, or low mood, which are common side effects of a keto diet.

How Long Does It Take To Get Into Ketosis? (5)

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So how long does it take to reach ketosis? Ultimately, it depends on your approach and how your body responds to dietary and lifestyle changes.

Monitor Your Ketones With Urinalysis Strips

It's essential to monitor your body's ketone levels while on a keto diet. You can check if you are in ketosis with blood, urine, or a breath test. The ideal range is 0.5 to 3.0 millimoles per liter (mmol/L) of ketones in urine or blood. Urine ketone test strips are an excellent non-invasive way to check your body's ketone levels, especially if you are uncomfortable with the painful finger pricks of a blood test. They are also relatively inexpensive than blood and breath tests that require specialized electronic meters. The KetoNOX urine ketone test strips are easy-to-use clinical-grade test strips to check urine ketone levels. These at-home strips produce a color that indicates your urine ketone levels, allowing you to keep up with your keto diet while maintaining an optimal nutritional ketosis range.

About the Author

How Long Does It Take To Get Into Ketosis? (7)

Alexis Williams

Alexis Williams is a Georgia-based freelance content writer and lifelong learner with an unquenchable thirst for knowledge. She uses that thirst combined with her experience in various fields to write about subjects valuable to individuals and businesses. Alexis has a robust catalog of experience that includes SEO content, blogging, product reviews/comparisons, research papers, and more.

About the Reviewer

How Long Does It Take To Get Into Ketosis? (8)

This blog was

Reviewed by:

Adele Morris

Adele Morris served as the editor and proofreader of this blog, displaying her exceptional editorial skills and expertise in the field.

The blog was also reviewed by the Diagnox content team. Diagnox Staff consists of a multidisciplinary team of scientists, content writers, and healthcare professionals with an expertise to create and review high-quality, informative, accurate, and easy-to-understand content for both professionals and everyday readers. Our staff follows strict guidelines to ensure the credibility and authenticity of the information, reviewing them independently and verifying them by various scientific and technical sources to ensure accuracy. Our review team believes in delivering knowledge free from bias to improve public health and well-being.

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How Long Does It Take To Get Into Ketosis? (2024)

FAQs

How Long Does It Take To Get Into Ketosis? ›

Weight loss from keto varies from person to person. Generally, if you maintain a daily caloric deficit of around 500-700 calories, you can expect noticeable weight loss after anywhere from 10 to 21 days. However, remember that weight loss is not linear and some may see results sooner.

How long do you need to be in ketosis to see results? ›

Weight loss from keto varies from person to person. Generally, if you maintain a daily caloric deficit of around 500-700 calories, you can expect noticeable weight loss after anywhere from 10 to 21 days. However, remember that weight loss is not linear and some may see results sooner.

How long does it take to get into ketosis after a cheat day? ›

If you've cheated on keto, you're likely out of ketosis. Once out, you'll need to strictly follow the keto diet to reenter ketosis. This process takes several days to 1 week, depending on your carb intake, metabolism, and activity levels ( 6 , 7 , 8 ).

How to speed up ketosis? ›

7 tips for reaching ketosis faster
  1. Significantly reducing the carbohydrate intake. ...
  2. Increasing physical activity. ...
  3. Fasting for short periods. ...
  4. Increasing healthful fat intake. ...
  5. Testing ketone levels. ...
  6. Checking protein intake. ...
  7. Consuming more MCT oil.

How much weight can you lose in 2 weeks on keto? ›

If a person follows the 75% fat /20% carb/5% fat keto diet, average results may look like this: Weeks 1–2: rapid weight reduction phase due to water loss – up to ten pounds. Weeks 2–4: standard weight reduction – between one and two pounds per week. After the first month – slow weight loss – around one pound per week.

How long to lose belly fat in ketosis? ›

It can take 2-4 days or longer to start losing weight in ketosis, although the rate of weight loss depends on various factors such as your metabolism, carb-protein-fat intake, fitness level, and how strictly you follow the diet.

Why am I not in ketosis with no carbs? ›

#1: Not enough time

If you're doing everything right but not in ketosis, you may simply need more time. Getting into ketosis isn't like cooking a roast. You don't just set the oven at 275 degrees for 2 hours, go watch a movie, and come back to a perfect result. Your body is unlike any other body.

What foods get you into ketosis fast? ›

The following is a list of the best healthy food options for a keto diet.
  • Fish and seafood. Fish and shellfish are good choices if you're following a keto diet. ...
  • Meat and poultry. ...
  • Non-starchy vegetables. ...
  • Avocados. ...
  • Berries. ...
  • Nuts and seeds. ...
  • Eggs. ...
  • High-fat dairy products.
Mar 24, 2024

What does ketosis feel like? ›

One of the signs of ketosis may include “keto flu,” which includes symptoms such as upset stomach, headache and fatigue. Other symptoms of ketosis may include: Bad breath (“keto” breath). Constipation.

What color is urine when in ketosis? ›

Any color on the ketone strip, from pink to purple, indicates fat burning (ketosis). Some people get a darker ketone strip color and achieve the same weight loss results as someone with a lighter color. Your “positive” color result can vary throughout the day for many reasons.

Do you pee more in ketosis? ›

You may urinate more than normal.

Masson also said that your kidneys pump out more fluid and electrolytes when your body is in ketosis. This may affect your bladder and cause you to urinate more often, she said.

What is ketosis smell? ›

Some describe keto breath as having a metallic taste in their mouth and a smell that's sweet, fruity or similar to nail polish remover. This is caused by the chemicals your body creates during ketosis, which are released from the body by exhaling.

How long does it take for ketosis to kick in? ›

For healthy people who don't have diabetes and aren't pregnant, ketosis usually kicks in after 3 or 4 days of eating fewer than 50 grams of carbohydrates per day. That's about three slices of bread, a cup of low-fat fruit yogurt, or two small bananas. You can start ketosis by fasting, too.

How long is best to stay in ketosis? ›

Gulotta recommends staying on keto for six months max before reintroducing more carbs to your diet. And Scott Keatley, RDN, of Keatley Medical Nutrition Therapy in New York City, agrees: “The science hasn't gotten to the point where I would be comfortable recommending it as a forever diet,” he says.

Why am I not losing weight on keto after 2 weeks? ›

Eating too many calories

In order to lose weight, you should aim to eat fewer calories than you burn to keep a continuous negative energy balance. On a keto diet, this often occurs naturally, but not always. It is still possible to overeat while following a low-carb, high-fat diet.

How much weight can I lose in 8 weeks on keto? ›

Since your body has burned off its glucose, it enters a state of fat loss at this stage. The average weight loss journey while on keto is around one to two pounds per week.

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