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How Long Is It Safe to Be in Ketosis? | Health Nerdy

How Long Is It Safe to Be in Ketosis? | Health Nerdy

  • October 27, 2020
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For original article click here
How Long Is It Safe to Be in Ketosis?

You’ve been taken over by an ever-growing feeling of happiness and joy.

Everything is great; your new diet is working. Indeed, it’s a fantastic feeling. It’s like being in love. You are loaded on energy. And, you’re glowing.

But- you had a slip. You went out with friends and didn’t want to be unsociable. You had some carbs, and now you feel guilty. After all, you enjoyed that dinner. It was tasty and healthy.

The situation got you thinking: is ketosis, no matter how great, safe in the long run?

How long should you stay in it?

And then the worst of all comes to mind: is ketosis bad?

Watch next 2 videos to get perspective on a topic :

Let us take you step by step through your weight-loss process and answer the scary questions you were thinking to yourself.

We will help you avoid the guilt and the doubt.

What is Ketosis?

Table of Contents

Ketosis is a process of ketone formation. It is a metabolic process that occurs when your body starts to break down fat for energy.

Now, glucose is that usual fuel that our bodies provide us with.

When we lack glucose, the body switches to fat instead. This happens for a few reasons:

  • because of low glucose levels
  • after a period of fasting
  • after an intense exercise
  • on a ketogenic diet

How do you know when your body is in ketosis?

When following a diet and trying to lose weight, you want to be in control and know what’s happening with your body.

When you get to the ideal ketone level range, that’s when your body boosts the fat burning process.

That’s why a lot of people measure their ketone levels to make sure that they’re in ketosis.

The good ketone level for ketosis anywhere from 0.6mmol to 3.0mmol, but it also depends on every individual.

How do you know when your body is in ketosis? Here are some signs:

  1. Weight loss
  2. Loss of appetite
  3. Clear mind, focus
  4. Bad breath
  5. Increased ketone levels in the blood, urine, and breath (that you can measure with test strips)

Benefits of being in ketosis

Weight loss is just one of the health benefits of ketosis. Your body will switch to ketosis for energy, boost the fat burning process and the fat loss.

Apart from these, the current research supports the following benefits of ketosis:

  • Ketosis may minimize some types of acne
  • Improves heart health
  • Reduces bad cholesterol levels LDL, increases the levels of good HDL cholesterol
  • Regulates blood sugar levels
  • May protect brain function
  • Decreases food cravings
  • Boosts energy levels and athletic performance

How long does it take to get into ketosis?

All fresh to the diet? Did you get knocked out of ketosis? The aggravating keto flu awaits you, but you might want to avoid that.

Let’s face it: it’s unpleasant, and you want to burn fat as soon as possible.

Now, how long to get into ketosis again, you may be wondering.

The good news is; our bodies can only store up to two days of glucose supply. That means, most people enter ketosis after these two or three days.

But, before they get there, they have to stick to minimal carbohydrate intake.

When do I start losing weight in ketosis?

Would you like to know how long does it take to lose weight in ketosis? In the first week already, which is the water weight you lose because you cut down carbs.

Weight Loss In Ketosis

Weight Loss In Ketosis

While this is quite common, remember that each body reacts differently. Some people even gain a little weight before they start shedding fat and pounds.

In case you lose no weight at all you might be doing one (or more) of these things.

Shortcut to Ketosis: Kow Fast Can you Get into Ketosis

Are you impatiently looking for shortcuts to ketosis? Yes, you can speed up the process, but it’s not too easy.

Fasting would be the correct answer. You enter ketosis while fasting much faster, boosting the fat burning process.

That means you can do either a 24-hour fasting day or create an eating schedule and meal plans.

In any case, a proper meal plan can help massively:

  1. Think low carb intake (20-50 g, depending on a person)
  2. Stack up on fat intake; healthy fats are your new best friends
  3. Don’t overdo the protein intake (protein is good, but overeating can prolong the time you need to enter ketosis)
  4. Water, water, water
  5. Regular exercise, but don’t overdo it
  6. Consider taking exogenous ketones (read my review here)
  7. Boost electrolyte intake with salted water, magnesium supplements, and potassium
  8. Intermittent fasting (with a strict eating and fasting schedule:
    1. skip one meal a day (the easiest is breakfast, that’s when most people feel least hungry)
    2. engage in fasting periods (12 to 16-hours without food)
    3. 24 hours on liquids, no food

Is ketosis bad?

With all the information available nowadays, you might be wondering: is keto diet safe? Before I was pondering the questions regarding steroid safety and found some of the answers here (website). Now I have questions regarding Keto.

Before reading any further, you should know that the ketogenic diet is different for everyone. Some can experience the keto flu; others may not.

Some need a cheat day with carbs for dinner more; others don’t.

While this type of diet can be very beneficial, it’s not magical.

Eating keto is a great way to help you battle the excess fat, but it might not be the ’till-death-do-us-part thing. In other words:

  • YES: 20 weeks of keto
  • NO: the rest of your life

There have been studies on long-term ketogenic diet and its effects. As a matter of fact, this study in obese patients only has positive results to show.

They were monitoring the patients for 24 weeks. The results?

No side effects of the diet reduced levels of triglycerides, blood glucose, and bad cholesterol. The same study reported elevated levels of HDL, the good cholesterol.

Nutritional ketosis is not diabetic ketoacidosis (DKA)

Before going any further, there is a general misconception we need to clear up.

Nutritional ketosis is the process of breaking fat for energy. Diabetic ketoacidosis is a serious condition that can have severe consequences without proper medical help.

At times, people with diabetes may prefer the ketogenic diet, but it is essential for them to follow a strict ketone monitoring system.

They also need to keep track of their insulin levels to avoid ketoacidosis.

Ketoacidosis affects people typically with type 1 diabetes, and, in rare cases, also individuals with type 2.

The symptoms of ketoacidosis develop relatively fast and include vomiting, nausea, dry mouth, weakness, and confusion.

Dangers of ketosis: should you be worried?

Changing your diet and lifestyle can lead to significant changes. Beneficial as it can be, consider the following, especially is your approach to the keto diet is sloppy or lazy:

  1. Poor quality triglycerides

Keto diet is all about the healthy fat intake, and these fats are good for you. Extra virgin olive oil, high-quality avocado oil, coconut oil, etc.



Replacing all these with poor-quality fats could, on the other hand, be far from healthy and may cause heart disease, heart attack or even stroke.

  1. An increased amount of free radicals

High amounts of poor-quality fats cause high levels of LDL, the bad cholesterol.

What Are Free Radicals

What Are Free Radicals

Bad cholesterol means more free radicals in your body that damage the cells and cause oxidative stress.

  1. Low blood sugar levels

When starting out with the ketogenic diet, you may experience fatigue and occasional headaches, because of the low blood sugar levels.

Low Blood Sugar Level

Low Blood Sugar Level

Unpleasant as it may be, this phase is only temporary. After all, your body is adjusting to a new diet; give it some time.

  1. Kidney stones

When there are too many ketones present in the blood, that puts stress on the kidneys.

Kidney Stones

Kidney Stones

A potential result would be kidney stones. While they can happen, they are a rare side effect.

  1. Constipation

Constipation is a common problem with many people. It’s a potential side effect when changing to a low-carb diet for the first time.



Make sure to stay hydrated, stack up on fiber (such as these non-starchy veggies), and magnesium supplement.

  1. Nutrient deficiency

This type of diet could cause vitamin and mineral deficiency in the long run. Observe your body and provide it with supplements, if necessary.

Nutrient deficiency

Nutrient deficiency

Even though, those that religiously follow this diet claim, that their food provides them with everything required for a healthy body.

So, how long is it safe to be in ketosis?

Ketosis lasts as long as you keep boosting the ketone levels and following a low-carb plan. While it also depends on your body and the physical activity, you can stay in ketosis anywhere between 2 to 7 days.

The trick is that people on low-carb diets should stack up on carbs now and again. That’s why we need to ask ourselves the following: how long it is safe to be in ketosis?

The answer is not as specific as you may like. It varies from person to person.

Constant ketosis is not a long-term goal for a lot of people, and it’s also unnecessary for extended periods of time.

On the other hand, there have been cases of people on this diet for more than five years without any significant side effects.

The diet boosts with successful results, but in the long run, it may not be for everyone.

There’s no doubt that the ketogenic diet helps produce short-term results.

Maintaining a high-fat, low-carb lifestyle indefinitely could cause some health issues. After all, the results also depend on your existing health conditions as well.

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