The keto diet is a high-fat, low-carbohydrate eating plan that has gained popularity in recent years. The goal of the keto diet is to force the body into a state of ketosis, where it burns fat for fuel instead of carbohydrates. While the keto diet has been shown to be effective for weight loss and improving metabolic health, it is not easy to follow and can be restrictive. In addition, there are potential side effects and health risks associated with the diet, and it may not be suitable for everyone. As such, it is important to consult a doctor or dietitian before starting the keto diet.
Characteristics | Values |
---|---|
Purpose | Weight loss, epilepsy treatment, and improved health |
Composition | 70% fat, 25% protein, and 5% carbohydrates |
Mechanism | Forces body to use ketone bodies (produced from stored fat) instead of sugar (glucose) from carbohydrates as fuel |
Effectiveness | May be as effective for weight loss as a low-fat diet, but challenging to maintain |
Risks | High in saturated fat, nutrient deficiency, liver and kidney problems, constipation, fuzzy thinking, and mood swings |
Side Effects | "Keto flu," including fatigue, mental fogginess, irritability, diarrhea, constipation, and vomiting |
Supplements | Keto pills, powders, and gummies claim to boost ketosis and weight loss, but evidence is limited |
Food Choices | Meat, fish, eggs, nuts, healthy oils, avocados, and low-carb vegetables |
Meal Planning | Requires careful planning and preparation to ensure adequate nutrition and variety |
Duration | Minimum of three months recommended for results, but long-term safety is uncertain |
What You'll Learn
What is the keto diet?
The keto diet is a low-carb, high-fat diet. It involves drastically reducing your carbohydrate intake and replacing it with fat. This reduction in carbs puts your body into a metabolic state called ketosis, where it burns fat for energy instead of carbohydrates.
The keto diet typically contains 70% fat, 20% protein, and only 10% carbs. However, some people on keto follow a net-carb plan, where you can subtract the grams of fibre from a food's total carbs, allowing for a slightly higher carb intake.
The keto diet is advertised as a weight-loss wonder, but it is actually a medical diet that comes with serious risks and is not suitable for everyone. It is best to make this only a short-term dietary change to jump-start weight reduction.
The keto diet is also used to help reduce the frequency of epileptic seizures in children and may have benefits for certain other health conditions, including heart disease, cancer, Alzheimer's disease, Parkinson's disease, and polycystic ovary syndrome.
There are several versions of the keto diet, including the standard ketogenic diet (SKD), the cyclical ketogenic diet (CKD), the targeted ketogenic diet (TKD), and the high-protein ketogenic diet. The SKD and high-protein ketogenic diets have been studied extensively, while the CKD and TKD are more advanced methods primarily used by bodybuilders or athletes.
It is important to note that the keto diet can be challenging to follow and is not sustainable for everyone. It can also be repetitive, as it involves eating a lot of bacon, cheese, eggs, meat, and other high-fat foods.
Before starting the keto diet, it is crucial to consult with a healthcare professional to ensure it is safe and suitable for you.
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What are the health benefits?
The keto diet has been around since the 1920s and is a low-carbohydrate, high-fat diet. The diet is designed to burn fat by cutting carbs. The body turns carbohydrates into glucose for energy, but when you cut carbs from your diet, you switch to burning fatty acids, or ketones. The keto diet is all about cutting carbs and eating more fat. The keto diet is used to help reduce the frequency of epileptic seizures in children and has been tried for weight loss.
Health Benefits
- Weight Loss: The keto diet may help a person lose weight. The ketogenic diet may help promote weight loss in several ways, including boosting metabolism and reducing appetite.
- Acne: Eating a diet high in processed and refined carbohydrates may alter the balance of gut bacteria and cause blood sugar to rise and fall significantly, both of which can adversely affect skin health. By decreasing carb intake, a ketogenic diet could reduce acne symptoms in some people.
- Cancer: The ketogenic diet may be a safe and suitable complementary treatment to use alongside chemotherapy and radiation therapy in people with certain cancers. This is because it would cause more oxidative stress in cancer cells than in normal cells, causing them to die. The keto diet may also lower the risk of insulin complications, which are linked to some cancers.
- Heart Health: The keto diet may lower your risk of developing cardiovascular disease by lowering your blood pressure, improving your HDL (“good”) cholesterol levels and lowering your triglycerides. However, the positive effects of the diet on heart health depend on diet quality. Therefore, it’s important to eat healthful, nutritionally balanced food while following the keto diet.
- Brain Function: The ketones that generate during the keto diet provide neuroprotective benefits, which means they can strengthen and protect the brain and nerve cells. A keto diet may help a person prevent or manage conditions such as Alzheimer’s disease.
- Epilepsy: Ketosis can reduce seizures in people with epilepsy — especially those who have not responded to other treatment methods. The ketogenic diet may reduce epilepsy symptoms by several different mechanisms.
- Polycystic Ovary Syndrome (PCOS): A high-carbohydrate diet can cause adverse effects in people with PCOS, such as skin problems and weight gain. A ketogenic diet improved several markers of PCOS, including ratios of luteinizing hormone (LH) and follicle-stimulating hormone (FSH) and levels of fasting insulin.
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What foods can you eat on the keto diet?
The keto diet is a high-fat, very low-carbohydrate, and moderate-protein diet. It is important to make sure you get enough fiber and B vitamins on the keto diet. Here is a list of foods that can be eaten on the keto diet:
- Fish and seafood, such as salmon, shrimp, lobster, flounder, and crab
- Meat and poultry, such as turkey, beef, chicken, and sausages
- Non-starchy vegetables like bell peppers, broccoli, zucchini, cauliflower, and leafy greens
- Avocados
- Berries, such as strawberries, blackberries, raspberries, and blueberries
- Nuts and seeds, such as pumpkin seeds, almonds, cashews, chia seeds, and flax seeds
- Eggs
- High-fat dairy products, such as cheese, plain Greek yogurt, cottage cheese, cream, and half-and-half
- Unsweetened plant-based milk, such as soy, almond, and coconut milk
- Olive oil and other oils, such as avocado, canola, nut, and seed oils
- High-cocoa chocolate (70% cocoa or more)
- Unsweetened coffee and tea
It is important to note that the keto diet is very restrictive and may not be suitable for everyone. It is always a good idea to consult with a healthcare professional or a registered dietitian before starting any new diet, especially one as restrictive as the keto diet.
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What foods should you avoid?
The keto diet is a low-carb, high-fat diet that can be challenging to follow. It involves drastically reducing your carbohydrate intake and replacing it with fat. This reduction in carbs puts your body into a metabolic state called ketosis, where it burns fat for energy instead of carbohydrates.
- Sugary foods: Soda, fruit juice, smoothies, cake, ice cream, candy, etc.
- Grains or starches: Wheat-based products, rice, pasta, cereal, etc.
- Fruit: All fruit, except small portions of berries like strawberries
- Beans or legumes: Peas, kidney beans, lentils, chickpeas, etc.
- Root vegetables and tubers: Potatoes, sweet potatoes, carrots, parsnips, etc.
- Low-fat or diet products: Low-fat mayonnaise, salad dressings, and condiments
- Some condiments or sauces: Barbecue sauce, honey mustard, teriyaki sauce, ketchup, etc.
- Unhealthy fats: Processed vegetable oils, mayonnaise, etc.
- Alcohol: Beer, wine, liquor, mixed drinks
- Sugar-free diet foods: Sugar-free candies, syrups, puddings, sweeteners, desserts, etc.
It is important to note that the keto diet is not suitable for everyone, and it is always recommended to consult a doctor or dietitian before starting any new diet, especially one as restrictive as the keto diet.
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What are the side effects?
The keto diet is a low-carb, high-fat diet that has been shown to be effective for weight loss and improving health. However, there are some side effects that you should be aware of before starting this diet.
Firstly, it is important to note that the keto diet is not suitable for everyone. People who are pregnant or breastfeeding, as well as those with blood sugar issues, heart disease, or liver disease, should not follow the keto diet. Even if you are in good health, it is recommended that you consult your doctor before starting this diet, as there may be some initial side effects.
One of the most common side effects of the keto diet is the so-called "keto flu". This is a group of flu-like symptoms that can develop within the first week of starting the diet. These symptoms include fatigue, mental fogginess, irritability, diarrhea, constipation, and vomiting. However, these symptoms typically resolve within a few days as your body adjusts to the new diet.
Another side effect of the keto diet is a change in the water and mineral balance of your body. This can lead to dehydration and electrolyte imbalances, so it is important to drink plenty of water and consider taking mineral supplements. In addition, the keto diet can cause digestive discomfort and decreased exercise performance.
The keto diet can also lead to nutrient deficiencies, especially if it is not well-planned. It restricts many foods that are good sources of micronutrients, such as vegetables, fruits, and grains. As a result, you may be at risk of deficiencies in selenium, magnesium, phosphorus, and vitamins B and C.
Furthermore, the keto diet is high in saturated fat, which has been linked to an increased risk of heart disease. It is also associated with an increase in "bad" LDL cholesterol, which is another risk factor for heart disease. Therefore, if you have any risk factors for heart disease, it is especially important to consult your doctor before starting the keto diet.
Finally, the keto diet can be challenging to stick to due to its restrictive nature. It may not be suitable for everyone's lifestyle and preferences, and there is a risk of falling off the wagon and regaining the weight you lost. Social gatherings, vacations, and holidays can be particularly challenging when following the keto diet.
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Frequently asked questions
The keto diet is a low-carb, high-fat diet that aims to force your body into using a different type of fuel. Instead of relying on sugar (glucose) that comes from carbohydrates, the keto diet relies on ketone bodies, a type of fuel that the liver produces from stored fat.
The keto diet involves drastically reducing carbohydrate intake and replacing it with fat. This reduction in carbs puts your body into a metabolic state called ketosis, where your body becomes incredibly efficient at burning fat for energy.
The keto diet is associated with an increase in "bad" LDL cholesterol, which is linked to heart disease. Other potential risks include nutrient deficiency, liver and kidney problems, constipation, and fuzzy thinking and mood swings.