Madeleine Hull
The Ketogenic diet, or keto, is a high-fat, moderate-protein, and low-carbohydrate diet that has gained popularity as a weight-loss method. It typically includes 70% fat, 20% protein, and 10% carbohydrates, but there are several variations of the diet. The standard ketogenic diet (SKD) is a very low-carb, moderate-protein, and high-fat diet, while the cyclical ketogenic diet (CKD) involves periods of higher-carb refeeds. The targeted ketogenic diet (TKD) allows for carbohydrates to be added around workouts, and the high-protein ketogenic diet is similar to the SKD but with more protein. The keto diet has been shown to be effective for weight loss and improving health parameters such as insulin resistance, high blood pressure, and elevated cholesterol. However, it can be challenging to start and maintain, and there are potential side effects such as the 'keto flu. It is important to consult with a doctor or dietitian before starting any new diet.
Characteristics and Values of a Ketogenic Diet
| Characteristics | Values |
|---|---|
| Carbohydrate intake | Less than 50 grams a day, but can be as low as 20 grams a day |
| Fat intake | 70-80% of total daily calories |
| Carbohydrate intake | 5-10% of total daily calories |
| Protein intake | 10-20% of total daily calories |
| Typical daily intake | 2000 calories, including 165 grams of fat, 40 grams of carbohydrates, and 75 grams of protein |
| Weight loss | Reduced calorie intake due to low carbohydrate intake, leading to increased fullness and decreased hunger and appetite |
| Health benefits | Improved insulin resistance, lower blood pressure, and reduced cholesterol and triglyceride levels |
| Meal options | Meat, fish, eggs, cheese, nuts, raw vegetables, and dark chocolate |
| Side effects | Keto flu, including diarrhea, constipation, and vomiting |
| Tips for beginners | Start slowly, stay hydrated, exercise lightly, and get plenty of rest |
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What You'll Learn
The ketogenic diet is a high-fat, moderate-protein, low-carbohydrate diet
The ketogenic diet, or keto for short, is a high-fat, moderate-protein, and low-carbohydrate diet. It has gained popularity as a weight-loss method, but it has been around since the 1920s. Originally, it was used to help manage health conditions like epilepsy and diabetes.
On a ketogenic diet, the goal is to shift your body's primary energy source from glucose derived from carbohydrates to fat. This shift puts your body in a state of nutritional ketosis, a metabolic process that increases the production of ketones by the liver. To achieve this, total carbohydrate intake is typically restricted to less than 50 grams per day, with some following an even lower limit of 20 grams.
The standard ketogenic diet (SKD) consists of approximately 70% fat, 20% protein, and only 10% carbohydrates. However, there are variations of the keto diet, such as the cyclical ketogenic diet (CKD), which includes periods of higher carb intake, and the targeted ketogenic diet (TKD), which allows for additional carbs around workout sessions. The high-protein ketogenic diet (HPKD) is another variation, with a ratio of 60% fat, 35% protein, and 5% carbs.
When starting the keto diet, it is important to make gradual adjustments to your eating habits. This may include ordering a burger wrapped in lettuce instead of a bun or choosing non-starchy vegetables like asparagus, kale, or bell peppers instead of potatoes or rice. It is also crucial to monitor your protein intake, as excessive protein can hinder ketosis.
While the keto diet offers potential weight loss benefits and improved health markers, it can be challenging to maintain in the long term. Additionally, it may cause initial side effects, often referred to as the "'keto flu,'" which can include symptoms like diarrhea, constipation, and vomiting. Consulting with a healthcare professional or a registered dietitian is recommended before embarking on the keto diet to ensure it is right for your individual needs.
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Vegetables are an important part of the diet
The ketogenic diet, or keto, is a high-fat, moderate-protein, and low-carbohydrate diet that has gained popularity as a weight-loss method. It typically consists of about 70-75% fat, 20% protein, and 5-10% carbohydrates. While it may seem that the keto diet is mostly about eating meats and fats, vegetables are an important part of the diet.
Non-starchy vegetables, in particular, are recommended as they are low in calories and carbohydrates but packed with essential nutrients like vitamin C, minerals, and antioxidants. Examples of non-starchy vegetables include asparagus, kale, bell peppers, and arugula. These vegetables can be enjoyed as a side dish or used as a substitute for high-carb foods. For instance, you can opt for spiralized vegetables or shirataki noodles instead of cereal, crackers, rice, pasta, or bread.
When eating out, it is advisable to choose a meat-, fish-, or egg-based dish and request extra vegetables instead of carbs or starches. This simple swap ensures you still get the nutrients and health benefits of vegetables while adhering to the keto diet.
It is worth noting that the keto diet can be challenging to start and maintain, and it is not a one-size-fits-all approach. Working with a dietitian is recommended to ensure you are getting the essential nutrients while maintaining ketosis.
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Cheese is a good fit for the keto diet
The ketogenic diet is a high-fat, moderate-protein, low-carbohydrate diet that has gained popularity as a weight-loss method. It typically contains 70% fat, 20% protein, and only 10% carbohydrates. The goal is to achieve ketosis, a metabolic state in which the body uses fat instead of carbohydrates for fuel.
When choosing a cheese to eat on the keto diet, it is important to consider the flavour and the carb count. Many cheddars are mild-tasting, and you may need more than one slice to feel satisfied. Sharp varieties provide a bigger dose of flavour and may be a better choice. Full-fat ricotta may be fine on the keto diet in small quantities, but it is higher in carbs, so portions must be watched. Cottage cheese is also not as keto-friendly, and it is recommended to limit the amount consumed if one is on a strict keto diet.
In addition to cheese, keto-approved snacks include pieces of meat, olives, boiled eggs, nuts, raw veggies, and dark chocolate.
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Eating out on keto: choose meat, fish or egg-based dishes
Eating keto can be challenging, but there are several tips and tricks to make it easier. When eating out, it is best to select a meat-, fish-, or egg-based dish. Meat and poultry contain no carbohydrates and are rich in B vitamins and several minerals, including potassium, selenium, and zinc. Poultry is also a great source of high-quality protein, which may help preserve muscle mass during a very low-carb diet. It is recommended to choose chicken, fish, and beef more often and limit processed meats. Fish is rich in B vitamins, potassium, and selenium, and it is also protein-rich and carb-free. Salmon, sardines, mackerel, albacore tuna, and other fatty fish have high levels of omega-3 fats, which have been found to improve results for hemoglobin A1C, a test that measures blood sugar levels over three months. Frequent fish intake has also been linked to improved brain health, a decreased risk of chronic disease, and improved mental health.
Eggs are a staple in keto diets and are high in protein, B vitamins, minerals, and antioxidants. Two large eggs contain zero carbohydrates and over 12 grams of protein. They also promote feelings of fullness and help protect eye health. When eating out, it is also a good idea to order extra veggies instead of carbs or starches. Non-starchy vegetables are low in calories and carbs but high in many nutrients, including vitamin C and several minerals. Zucchini, for example, is extremely popular on keto and can be used as a pasta or noodle substitute.
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The keto diet has been linked to weight loss
There is anecdotal evidence of people losing weight on the ketogenic diet. People also report feeling less hungry than on other types of restricted diets. However, while many people report initial rapid weight loss on the keto diet, long-term fat loss depends on sustained caloric deficits and metabolic adaptation. Without careful planning, some people experience plateaus or weight regain once they stop the keto diet.
Several theories exist as to why the ketogenic diet promotes weight loss, though they have not been consistently shown in research. These include a satiating effect with decreased food cravings due to the high-fat content of the diet, a decrease in appetite-stimulating hormones such as insulin and ghrelin when eating restricted amounts of carbohydrates, a direct hunger-reducing role of ketone bodies, and increased calorie expenditure due to the metabolic effects of converting fat and protein to glucose.
Research shows that the ketogenic diet may be as effective for weight loss as a low-fat diet. One review of 13 studies found that following a very low-carb, ketogenic diet was slightly more effective for long-term weight loss than a low-fat diet. Another study in 34 older adults found that those who followed a ketogenic diet for 8 weeks lost nearly five times as much total body fat as those who followed a low-fat diet. A study of 39 obese adults placed on a ketogenic very low-calorie diet for 8 weeks found a mean loss of 13% of their starting weight and significant reductions in fat mass, insulin levels, blood pressure, and waist and hip circumferences.
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Frequently asked questions
The ketogenic diet, or keto diet, is a low-carb, high-fat, and moderate-protein diet. The diet aims to drive the body into a metabolic state called ketosis, where the body starts burning stored fat as a source of energy instead of carbohydrates.
Foods that are typically eaten on a ketogenic diet include fish and shellfish, meat and poultry, eggs, cheese, non-starchy vegetables like broccoli, cauliflower, bell peppers, and spinach, avocados, berries, nuts, seeds, and high-cocoa chocolate.
Foods that are high in carbohydrates should be avoided on a ketogenic diet. This includes cereal, crackers, rice, pasta, bread, beer, and starchy vegetables.
The ketogenic diet can help with weight loss, especially with losing excess body fat, and it may also help with blood sugar control for people with type 2 diabetes.
The ketogenic diet may not provide enough fiber and B vitamins, as many foods that are high in these nutrients also contain a lot of carbohydrates. Additionally, there is a concern that the diet includes a lot of saturated fat, which may increase the risk of heart disease. It is recommended to consult a doctor or healthcare professional before starting the diet, especially for those with certain medical conditions or who are taking certain medications.
