How To Low Carb: 15+ Common Weight Loss Mistakes | KetoDiet Blog

Studies have proven that low-carb diets are the most effective tool for losing excess body fat. Despite that, it’s not uncommon for many people to hit a weight loss plateau. By weight loss plateau, I don’t mean a short term fluctuation but a long-lasting stall. No matter what you do, the extra pounds of body fat are just not coming off.


Specific diet plans such as fat fast have helped many people break through long-lasting plateaus but fat fast shouldn’t be used as a quick fix every time your weight is stalling. In the long term, you need to focus on getting your diet right and avoid some of the common mistakes listed below.

1. Not Knowing Your Macros

As you may know, calories do count, even on a low-carb, ketogenic diet. When you eat nutritious foods low in carbs, moderate in protein and high in fat, you will naturally eat less. For this reason, most of you won’t need to count calories on a keto diet.

However, just following a low-carb diet doesn’t guarantee weight loss. It helps to keep an eye on your fat intake. The closer you get to your target weight, the more important that becomes. Additionally, you need to ensure that you’re eating a sufficient amount of protein to stay satiated and prevent muscle loss. You can find out your ideal macronutrients by using our keto calculator.

Only Focusing on Carbs

Most of you know that when following a ketogenic diet, you have to reduce the amount of carbohydrates you are eating. However, this doesn’t mean that the less carbs you eat, the more weight you are going to lose. In fact, I’ve seen many people following a close to zero-carb diet who were plateauing or even gaining weight. A very low-carb diet will simply not ensure fat loss!

Some people do well on a moderate carbohydrate diet while others see better results with a greater carb restriction. There is simply no one way for all and that’s why we need to embrace personalised nutrition in order to determine the best method for each individual.

I use non-starchy vegetables, nuts, seeds and berries, which are all high in fibre, thus total carbs. If you want to learn more about my approach, have a look at this post: Total Carbs or Net Carbs: What Really Counts?

Update: You can learn more about the role of soluble fibre in this post: Nuts & Seeds on a Ketogenic Diet

Not Eating Adequate Protein

Eating sufficient protein is important, especially for those who are trying to lose weight. Adding some protein within the recommended limits may help you break through a long-lasting plateau. When you eat a high-protein meal, your body releases glucagon which counterbalances insulin and  plays a significant role in satiety.

This doesn’t mean that you should overeat protein. Protein is not a particularly efficient fuel source and too much of it may raise your insulin levels. As you may know, high insulin levels will block fat burning. Also, not all protein sources are equal and some amino acids may cause  greater insulin spikes. You don’t need to worry about a few extra grams of protein. Eating slightly more protein will not kick you out of ketosis because not all excess protein converts into glucose via gluconeogenesis.

Make sure you also include quality protein sources such as fatty fish high in omega 3s. You can read more about protein intake in this post.

Not Eating Adequate Fat

When following a ketogenic diet, you regulate your energy intake via fat, as protein and carbs remain more or less constant. It’s simple: if you want to lose body fat, you need to stay in a calorie deficit. You should get most of your fats from omega-3 rich foods like fatty fish, and foods high in monounsaturated fatty acids such as avocados and extra virgin olive oil.

Also, make sure you get enough vitamin D. Chances are that even if you eat fatty fish and other foods high in vitamin D, you may be deficient in this vital micronutrient. I eat fish at least 3-4 times a week and I’m also taking cod liver oil. To learn more about counting macros, types of fat and your ideal fat intake on a ketogenic diet, read this post.

2. Avoiding Vegetables and Fiber

Non-starchy vegetables have their place in a healthy low-carb diet. There is no reason to avoid vegetables like broccoli, cauliflower, zucchini, bell peppers or fruits like avocado or berries. These foods are very high in micronutrients, low in carbs and won’t impair your weight loss efforts. So unless you have food sensitivities to nightshades or other vegetables, you should include them in your diet.

3. Obsessing Over Your Ketone Levels

Just like many others, I don’t believe that a very low-carb ketogenic diet with high ketone levels is the best way to lose weight. Nutritional ketosis is achieved when your blood ketones are between 0.5 and 3.0 mM. Values higher than that have no additional benefits.

People ask this all the time: “… I have high ketone readings, so why am I not losing weight?”

It’s not just about carbs and ketones and you need to know your macros. Many people don’t eat enough protein and overeat fat simply because they’ve been given the wrong advice.

Here’s a good article to explain more: The Ketone Craze: Who Really Benefits From High Ketone Levels?

4. Too Much Stress

Stress is a significant factor when it comes to weight loss. When you are stressed, your cortisol levels rise. This will then raise blood sugar and lower ketone levels. In order to cope with chronically elevated blood sugar, your body will produce more insulin to cope with chronically high blood sugar. When that happens, you will find it difficult to get into fat-burning mode. I know, it’s easy to say and difficult to do, but try to reduce your stress levels. Here are a few tricks you can try:

5. Not Enough Sleep

Lack of sleep or a circadian rhythm disorder may be one of the factors responsible for weight loss stall. With less energy, it will be more difficult to lose weight.  Sleep deprived individuals produce less growth hormone, have impaired glucose metabolism and show a decreased level of leptin – the hormone that signals satiety.

Lack of sleep also leads to an increased level of ghrelin – the hormone that tells the brain when we are hungry. People who are sleep deprived are more likely to store body fat. Here are some tips:

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One of the common mistakes people make is to overeat nuts. You may experience weight stalling or even weight gain not because nuts will kick you out of ketosis but because they are calorie-dense and easy to overeat. 100 grams of macadamia nuts have over 700 kcal and over 70 grams of fat, which is half of the energy requirement for most people trying to lose weight.

This doesn’t mean you have to exclude nuts altogether. Nuts are particularly high in insoluble fibre, which has zero effect on blood sugar. That’s just one of the reasons why you shouldn’t worry about their relatively high total carb count.

Furthermore, even the soluble fibre in nuts has little to no effect on blood sugar. To read more about nuts & seeds: Nuts & Seeds on a Ketogenic Diet

How About Peanuts?

Peanuts are legumes which are avoided on a keto & primal/paleo diet for two reasons. Firstly, although they are relatively low in carbs, peanuts contain lectins and phytates which make them hard to digest. Also, legumes in general have been linked to leaky gut syndrome, PCOS, IBS and Hashimoto’s. You can read more about peanuts here.

7. Eating Too Much Dairy

Full-fat dairy commonly eaten on a ketogenic diet is high in calories and easy to overeat. Also, dairy contains a specific type of protein that can lead to  greater insulin spikes than other protein sources.

If dairy makes your insulin spike, cut back on high-protein dairy products like cheese and yogurt. You can keep butter and cream, as these are relatively low in protein. If you have to avoid dairy altogether, try my free paleo diet plan!

8. Eating Too Many Low-Carb Treats

Although we all love low-carb treats, they are not suitable for weight loss, especially if you just started following a low-carb diet and need to get over your sugar addiction. Keto treats and low-carb sweeteners can all increase cravings and your appetite levels and you should minimise or even completely avoid eating them when you are trying to lose weight. If you have a sweet tooth, go for a piece of dark chocolate or a fat bomb.

9. Eating Products Labeled “Low-Carb”

Simply put: Eat real food. Avoid prepared meals full of additives and deceptive labelling. It’s no secret that low-carb products are often higher in carbs than they claim to be or contain unwanted additives. A common practice is to exclude all sugar alcohols and other sweeteners from the carb count. This is wrong as not all sugar alcohols and other sweeteners have zero effect on blood sugar. There are a few decent products you can use even on a keto diet but you have to be extra careful.

10. Drinking “Bulletproof” Coffee Every Day

There are a few reasons why I don’t drink “bulletproof” aka butter coffee every day. I like the taste and drink it occasionally, usually instead of breakfast – not as part of it. BPC is mostly fat and very low in other nutrients. While for some people it seems to suppress hunger, I wouldn’t personally drink it every day. While BPC may be a good addition to your diet, you should get your calories from real nutritious foods together with protein, vitamins and minerals.

Some of my readers have been experiencing weight stalling and once they ditched their bulletproof coffee in the morning, they started losing weight again. You can try my keto egg coffee that is more nutritious and satiating – it will keep hunger at bay.

11. Drinking Alcohol

Alcohol is a no-no for those who are trying shed extra pounds. Apart from adding calories, alcohol has other disadvantages when it comes to weight loss. Even if there is no sugar in it, your body can’t store alcohol as fat – it has to metabolise it first. As a result, the fat-burning advantage of the ketogenic diet is diminished. Alcohol also increases appetite, dehydration and suppresses self-control – none of these are good for weight loss.

Lastly, alcohol converts in your body to acetate and if you use a breathalyzer to track your ketone levels, you will get inaccurate and artificially high results.

12. Snacking Too Much

If you follow a nutritious, low-carb or ketogenic diet, you shouldn’t need to snack. Unless you have hypoglycaemia issues, three main meals (or even less) a day should be enough. Here are a few simple rules:

13. Not Planning Your Diet

Several studies have shown that planning and tracking your diet, as well as community support, can significantly improve weight loss and help you achieve your goals.

Planning your meals in advance will prevent excessive snacking and help you avoid bingeing accidents. This doesn’t mean that you will have to track your diet forever but it will help you avoid common mistakes, especially if you are new to the ketogenic diet.

We have created an iPad app that is designed specifically for low-carb, ketogenic and primal/paleo diets. To learn more about our apps, check out the KetoDiet App FAQ.

14. Relying Purely on Generic Diet Plans

Diet plans are great for those that are new to the diet. I created several free ketogenic diet plans that you can download and try. However, no diet plan or way of eating fits all. Although my diet plans are suitable for the vast majority of people, it doesn’t mean they will work for each one of you. You may need to make small adjustments or get a diet plan created specifically for you.

If you have any health condition or struggle to follow a diet plan, you will benefit from a diet plan that is made specifically for your needs, including the right energy intake, food sensitivities and other preferences. I have created a list of some of the best qualified low-carb & keto experts who can help you reach your goals.

If you just started following a low-carb diet and everything seems to be too overwhelming, my free diet plans will guide you through day by day.

15. Not Exercising Right

Not exercising at all or exercising too much are both counterproductive for weight loss on a keto diet. In a nutshell:

16. Having Cheat Meals

There is a difference between carb-ups and cheat meals. You can have a meal higher in carbs after HIIT. On the other hand, a cheat meal is completely different as it usually refers to eating anything from the “banned” foods.

Having regular cheat meals is a bad idea and counterproductive for your diet. I allow myself a couple of occasions per year when I eat almost anything I want. I don’t do it to “boost or restart” my metabolism but purely for social reasons.

17. Health Conditions

If you’re certain that you’re doing everything right and still can’t see the scales move, there may be a health issue you are not aware of. I know this first hand as I have Hashimoto’s.

Hypothyroidism or Adrenal Dysfunction

It only takes a blood test or a saliva test to find out if you have a thyroid or adrenal issue. If you have a thyroid issue, I highly recommend you read this book: Hashimoto’s Thyroiditis: Lifestyle Interventions for Finding and Treating the Root Cause – it has helped me tremendously and it’s a must-read for everyone with Hashimoto’s.

Contrary to what you may have been told, low-carb diets don’t cause hypothyroidism or adrenal dysfunction. However, Dr Volek and Dr Phinney noted that there isn’t enough evidence that a very low-carb diet (such as less than 20 g net carbs) is beneficial for those with preexisting thyroid or adrenal conditions. I’ve had Hashimoto’s for several years (prior to going low-carb). I keep my net carbs at or above 30 grams and that works best for me.

Additionally, sex hormones can also affect your weight. While polycystic ovarian syndrome (PCOS) can be the culprit for women, men experience a decreased level of testosterone as they age. In these cases, it’s a good idea to consult a qualified expert.

Medications Causing Weight Gain

Certain medications, such as insulin injections, other diabetes medications and cortisone, are known to cause weight gain. Consult your doctor for possible alternatives.

Chronic Pain

If you suffer from chronic pain, it’s very likely your cortisol will also be high. This will impair your weight loss. Consult your doctor on ways to mitigate the effect and try to find ways to reduce stress.

18. Insufficient Electrolytes

When entering the induction phase of a ketogenic diet, some people experience “keto-flu”. The “flu” is nothing more than a result of starving the body of carbohydrates in order to enter ketosis.

The common symptoms vary from headaches, nausea, fatigue and brain fog to muscle weakness, cramps and heart palpitations. All of these can affect the effectiveness of the ketogenic diet. To read more about electrolytes and their importance, read this post: Keto-flu and Sufficient Intake of Electrolytes and pin or download our keto-flu infographic.

Any more? Please, let me know in the comments!

Creator of

I changed the way I ate in 2011, when I was diagnosed with Hashimoto’s, an autoimmune disease that affects the thyroid. I had no energy, and I found it more and more difficult to maintain a healthy weight.

That’s when I decided to quit sugar, grains, and processed foods, and to start following a whole-foods-based ketogenic approach to food.

This article has been reviewed by Franziska Spritzler, RD, CDE who is a qualified expert. At KetoDiet we work with a team of health professionals to ensure accurate and up-to-date information. You can find out more on the About us page.

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