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The big comparison check: The best diets for losing weight with advantages and disadvantages

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approx. 10 Minutes

Weight loss diets are a common topic in the health and fitness industry. They promise quick and easy solutions to weight problems and are often touted as the key to better health and confidence. However, there are many different types of diets that people can use to lose weight, and not every diet is right for everyone.

Healthy weight loss is usually slow and steady, and involves both a balanced diet and regular exercise. To help find the right diet for your needs, in this article we'll give an overview of some of the most popular weight loss diets and discuss the pros and cons of each. We will also talk about how to lose weight in a healthy way.

Before we get into the pros and cons of the different diets, here's a tip: If you're thinking about dieting, our nutrition app FoodPal can help. Just choose one of over 11 great diets and you'll get your customized nutrition plan with simple and delicious recipes. Personalized, individual and perfectly tailored to you and your nutrition goal. This way you save a lot of time and effort and reach your desired weight without starving yourself. Start today and download FoodPal for free.

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Diet 1: Low-Carb Diet

A low carb diet, also known as a low carb high fat diet (LCHF), is a diet that reduces the amount of carbohydrates in the diet and focuses on foods high in protein and fat. For example, large amounts of pasta, rice, potatoes and bread are avoided. This type of diet has become increasingly popular in recent years because it can help reduce weight and improve health markers such as blood pressure and blood sugar levels. There are several approaches to the low carb diet, some of which have stricter carbohydrate intake rules than others.

Benefits of a LowCarb Diet:

  1. Well-satiating: due to high satiety and hearty meals, a low carb diet can reduce appetite and cravings and promote fat burning, which contributes to faster weight loss.
  2. Faster results: reducing carbohydrates causes your tissues and muscles to become somewhat dehydrated (your glycogen stores empty). Your body weight will reduce quickly at first - but keep in mind that the initial rapid weight loss is mostly water, not body fat. Still, you'll appear visually a bit drier and less bloated.
  3. Improved blood sugar levels: Carbohydrates are converted to sugar in your body. Fewer carbohydrates therefore also means that less sugar is converted. This will lower your blood sugar level and reduce the risk of diabetes.
  4. Stable blood pressure: A low carb diet can help lower blood pressure and reduce the risk of cardiovascular disease.
  5. More energy: some people report more energy and strength while following a low carb diet.
  6. Increased cognitive performance: Improved cognitive performance is also commonly reported, such as better concentration and memory.

Disadvantages of a LowCarb Diet:

  1. Lack of nutrients: A low carb diet can cause you to take in less of certain nutrients, especially fiber, which is found in fruits, vegetables and whole grains. This can lead to digestive problems and a lack of important nutrients such as vitamins and minerals. Take special care to eat all the important vitamins and nutrients.
  2. Restrictions on food choices: The LowCarb diet will cause you to reduce certain foods that are rich in carbohydrates, such as fruits, vegetables, whole grains and legumes. This can limit the food choices available and make it harder to plan balanced meals.
  3. Difficulty adhering to the diet: Some people find it difficult to follow a low carb diet, especially if they are eating out at places where low carbohydrate options are limited. It can also be difficult to stick to the restrictions on food choices, especially if you're used to eating a lot of high-carbohydrate foods.

Conclusion for the LowCarb Diet:

A low carb diet is especially good for people who suffer from certain health conditions, such as type 2 diabetes or fatty liver. However, it is also suitable for people who are trying to lose weight and improve their insulin resistance. Overall, it's important that a low carb diet is well planned and balanced to ensure you get all the important nutrients your body needs. It's also important to choose high quality foods when making your food choices to ensure that you're taking in enough fiber, vitamins, and minerals.

Diet 2: Ketogenic diet

The ketogenic diet, also known as "keto", is an extreme form of low carb diet that aims to put the body in a state of ketosis, using fat instead of carbohydrates as the main source of energy. To achieve ketosis the carbohydrates eaten must be reduced to almost zero. This means giving up bread, pasta, rice and potatoes. But also fruits and some types of vegetables must be consumed only in moderation. The ketogenic diet is often used for weight loss and to improve certain health conditions such as type 2 diabetes and epilepsy.

By consuming extremely low levels of carbohydrates, your body creates ketones. Ketones are chemical compounds produced by the body that are used to replace glucose (sugar) as an energy source. They are produced in the body when the body burns fats for energy instead of carbohydrates.

Ketones are produced mainly in the liver and are then transported to other tissues to be used as an energy source.

Benefits of the ketogenic diet:

  1. Weight loss: As with the classic LowCarb diet, the meals of the ketogenic diet are often very hearty and filling. This helps to reduce appetite and thus promote weight loss.
  2. Faster results: the extreme reduction of carbohydrates causes your tissues and muscles to become somewhat dehydrated (your glycogen stores empty). This reduces your body weight quickly at first - but keep in mind that the initial rapid weight loss is mostly water, not body fat. Still, you'll appear visually a bit drier and less bloated.
  3. Improve Insulin Sensitivity: Improves insulin sensitivity and normalizes blood sugar levels. The risk of type 2 diabetes will reduce.
  4. Promote brain health: the ketogenic diet improves neuronal plasticity and brain cell function, reducing the risk of neurodegenerative diseases such as Alzheimer's.
  5. Treatment of epilepsy: The ketogenic diet has been identified as an effective treatment for epilepsy in children and adults and may contribute to significant improvement in seizure frequency in some patients.
  6. Prevention of heart disease: Lowers blood pressure and reduces the risk of heart disease by lowering LDL cholesterol levels and increasing HDL cholesterol levels.

Disadvantages of the ketogenic diet:

  1. Lack of nutrients: If not carefully planned, there may be a deficiency of certain nutrients such as fiber, vitamins and minerals, as the ketogenic diet allows only a limited range of foods. This can lead to health problems.
  2. Difficulty in adherence: The ketogenic diet is one of the strict diets and requires a lot of discipline to stick to it. Many find it difficult to stick to the diet, especially in social situations or when traveling.
  3. Possible side effects: Side effects such as nausea, fatigue, headaches and constipation may occur due to the change. 
  4. Cravings: cravings for fresh fruit are often reported due to the elimination of fruit.

Conclusion for the ketogenic diet:

For people with certain health conditions such as epilepsy, Alzheimer's disease and type 2 diabetes, the ketogenic diet is very suitable as it can help improve symptoms in these cases. Also, for people trying to lose weight and improve their insulin sensitivity, the ketogenic diet can be a good choice, provided you are very disciplined and can give up fruit, pasta and bread without problems. Good preparation and planning is very important and you should also be aware of possible side effects.

Diet 3: Low Fat Diet

The low-fat diet is a diet that focuses on reducing fat consumption, thereby saving calories in order to lose weight and reduce the risk of cardiovascular disease. This is achieved by choosing foods with a lower fat content and limiting fat consumption to less than 30% of daily calories.

The low-fat diet became popular in the 1970s when a focus on saturated fat consumption was identified as a major cause of cardiovascular disease. Since then, the low-fat diet has become one of the most popular diets because it is quite easy to implement.

Fat, with its high density, has more than twice as many calories as carbohydrates or protein - e.g. 1g fat has about 9 kcal, 1g protein and carbohydrates have about 4 kcal each. So if you pay some attention to low-fat foods and sauces, you can quickly save quite a few calories and reduce your weight.

Advantages of the low-fat diet:

  1. Weight loss: the low-fat diet is good for reducing overall calorie consumption because fats have a higher caloric density than proteins and carbohydrates.
  2. Easy to implement: Relatively easy to incorporate into your daily routine. Be sure to avoid high-fat foods such as fried foods, cream sauces, mayo and cheese.
  3. Lowering cholesterol: A low-fat diet can help lower blood cholesterol levels, especially the bad LDL cholesterol. This can reduce the risk of heart disease and stroke.
  4. Improve gastrointestinal health: Provided you choose high-quality whole grains for energy, the abundance of fiber will help reduce digestive problems and improve gastrointestinal health.
  5. Improve physical performance: Carbohydrates are a good and fast energy source that can improve your physical performance. Perfect for hard workouts.

Disadvantages of the low-fat diet:

  1. Lack of important nutrients: If the consumption of fats is reduced too much, it can have serious effects on your health. For example, fats are significantly involved in hormone production. Be careful not to reduce fats too much and try to include healthy fats like omega 3 and omega 6 in your diet.
  2. Reduced satiety: Fats are very satiating and keep you full longer. A low-fat diet can cause you to feel hungry more often and reach for snacks more quickly.
  3. Where's the flavor?: Fat is a strong flavor carrier and adds juiciness, texture and finesse to your meals. Some people report that eating low-fat doesn't taste good to them in the long run. So try to plan well so you have plenty of tasty low-fat recipes up your sleeve.

Bottom line for a low-fat diet:

A low fat diet well suited for people who suffer from overweight or obesity and want to reduce their weight or suffer from certain health problems like high cholesterol or cardiovascular diseases and want to reduce their risk of these diseases. It is comparatively easier to integrate into everyday life, but carries high risks if you do not plan your diet carefully.

Diet 4: Intermittent fasting

Intermittent fasting, or intermittent fasting, is a dietary method in which you consciously decide not to eat food within certain periods of time. There are several forms of intermittent fasting, such as 5:2 fasting, where you eat less than 500 calories two days a week and eat normally the remaining five days, or 16:8 fasting, where you fast 16 hours a day and then eat normally within eight hours. Intermittent fasting is often recommended as a way to lose weight or improve health. 

The promotion of health attributes to the fact that during the fasting periods, your body does not have to expend energy on digestion and metabolism. It can use the time and energy for cell renewal. This means that old cells are replaced with fresh ones.

Due to the uncomplicated and simple handling, Intermittent Fasting is easy to integrate into almost any daily routine.

Advantages of Intermittent Fasting:

  1. Weight loss: Through the fasting periods and the associated skipping of meals, the total calorie consumption is reduced, which leads to weight loss - provided that during the periods in which you eat food, you eat normally and do not consume excessive calories.
  2. Improved Insulin Sensitivity: Intermittent fasting improves insulin sensitivity, which helps stabilize blood sugar levels and reduce the risk of diabetes.
  3. Reduction of inflammation: Inflammation in the body is reduced, which has been linked to various health problems such as heart disease and even certain cancers.
  4. Extending life expectancy: Intermittent fasting may help extend life expectancy by slowing aging and reducing the risk of aging-related diseases such as Alzheimer's and Parkinson's.
  5. Strengthening heart health: Intermittent fasting can reduce the risk of heart disease by lowering and stabilizing blood pressure.
  6. Improved metabolic function: fat metabolism and protein synthesis in the body is improved.
  7. Better skin health: Intermittent fasting has a positive effect on the production of collagen and elastin and can help improve skin health.

Disadvantages of Intermittent Fasting:

Feelings of hunger: During fasting periods, some people may develop feelings of hunger, which can be uncomfortable.

Possible impairment of physical performance: during fasting periods, physical performance could be impaired, especially during intense physical activities such as sports or heavy physical labor. This can go as far as dizziness and circulatory failure. However, after a period of adjustment, your body can quickly adapt to this.

Possible interference with social life: Some people see as a problem that you exclude yourself from certain social activities or events that take place around meals.

Conclusion on Intermittent Fasting:

Intermittent fasting can be a suitable way for many people to improve their health and reduce their weight. It is relatively easy to integrate into everyday life and, except for fasting times, there are few rules to follow.

For people who do intense physical work or sports, the fasting period should be chosen carefully, as it can affect physical performance.


Low carb diets are diets in which the carbohydrate content of the diet is reduced and more proteins and fats are consumed instead. 

The ketogenic diet is an extreme form of the low carb diet in which the carbohydrate content is reduced to such an extent that the body enters a state of ketosis and uses fat as the main energy source.

Low fat diets, on the other hand, reduce the fat content of the diet and rely instead on carbohydrates and proteins.

Intermittent fasting is not a specific diet in the traditional sense, but rather a dietary pattern of eating at certain times and fasting at other times.

All four diets can help you lose weight and improve your health, but it's important to note that each diet is better suited for some people than others. 

It is important to plan and structure your diet carefully so that your body is provided with all the essential nutrients and vitamins and no deficiencies occur.

To make this time-consuming and labor-intensive planning and structuring easier for you, our free nutrition app FoodPal is available. Here, according to your wishes, goals and needs, you will receive your personal nutrition plan with selected, delicious recipes that perfectly suit you and your goal. This way you can be sure to reach your desired weight and at the same time be optimally supplied with all important nutrients and vitamins. Start right away and download FoodPal now for free.

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