Leena Watts
The keto diet is a high-fat, low-carbohydrate, and moderate-protein diet. The aim is to reach a metabolic state called ketosis, where the body breaks down stored fat into molecules called ketone bodies, which are used for energy. The keto diet is typically very challenging and restrictive, with stringent food restrictions. To reach ketosis, total carbohydrate intake must be reduced to less than 50 grams per day, and can be as low as 20 grams per day. This means that most fruits and vegetables are too high in carbohydrates to eat on the keto diet, although berries are an exception. Foods to eat on the keto diet include eggs, meat, fish, shellfish, dairy, and plant-based fats like avocados and coconut oil.
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What You'll Learn
High-fat foods like eggs, meats, avocados, and oils
The keto diet is a high-fat, low-carbohydrate diet. It involves eating foods that are high in fat and low in carbs, such as eggs, meats, avocados, and oils. These foods can be incorporated into a keto diet in the following ways:
Eggs
Eggs are a staple in keto diets, as they are high in fat and low in carbs. A single large egg (50 g) contains less than 5 grams of fat. It is important to eat whole eggs, as the yolk is where most of the egg's nutrients are found, including antioxidants that protect eye health. Eggs can be hard-boiled and eaten as a snack or added to a salad or scramble with low-carb vegetables.
Meats
Meat is a popular choice for people on the keto diet because it is naturally carb-free and high in fat. Lean meats, like skinless chicken and turkey, are recommended over fatty meats like beef, lamb, and pork, which are high in saturated fat. Meat can be cooked in oils, such as olive oil, to increase the fat content.
Avocados
Avocados are a rich source of heart-healthy monounsaturated fatty acids (MUFAs) and fiber, which bolsters digestive health. Half an avocado contains 10.5 grams of fat, 6 grams of total carbs, and 5 grams of fiber. Avocados can be added to salads, smoothies, breakfast plates, or used to make guacamole.
Oils
Oils, such as olive oil, avocado oil, and coconut oil, are pure sources of fat and contain zero carbohydrates. They can be used for cooking, dressing, or drizzling over cooked meats or vegetables.
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Dairy products like butter, cream, and cheese
Butter is allowed on the keto diet, as it is a good source of fat and won't accumulate as you are burning fat for fuel. However, it is important to note that butter is high in saturated fat, which has been linked to an increased risk of cardiovascular disease. Some suggest that olive oil or avocado oil are healthier alternatives to butter. It is also important to consider how your body reacts to butter and to monitor your apob levels if you are consuming large amounts of butter.
Cream is another dairy product that can be included in the keto diet. It is a good way to add fat to your diet, especially in drinks such as coffee. However, it is important to be mindful of the amount of cream consumed as it is high in calories and can be difficult to digest due to its lactose content. A tip to reduce the lactose content is to water down the cream.
Cheese is a popular choice for those on the keto diet as it is high in fat, moderate in protein, and low in carbs. It is important to choose high-quality, grass-fed, and full-fat cheese. Goat cheese is an excellent option as it contains zero carbs and is easier to digest due to its lower lactose content. Blue cheese is also a good option as it is flavorful and low in carbs. However, it is important to be mindful of the type of cheese consumed, as some varieties are highly processed and may lead to inflammation.
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Carbohydrates to avoid like pasta, rice, and bread
The keto diet is a high-fat, low-carbohydrate diet. Carbohydrates are the body's preferred source of energy, but on a strict ketogenic diet, about 5% to 10% of energy intake is from carbohydrates. The reduction of carbohydrates puts the body into a metabolic state called ketosis. Ketosis is when the body starts breaking down stored fat into molecules called ketone bodies to use for energy when there is little or no circulating blood sugar from food.
The keto diet is very challenging for most people to keep up with in the long term. It is also very restrictive, and people on the keto diet tend to avoid nutritious foods like whole grains, legumes, fruits, and vegetables.
When on the keto diet, it is recommended to avoid carbohydrates like pasta, rice, and bread. These foods are high in carbohydrates and can prevent the body from reaching ketosis. Even whole-wheat pasta and bean-based pasta are high in carbs.
Instead of these carb-rich foods, it is recommended to eat non-starchy vegetables, which are low in calories and carbohydrates but high in nutrients like vitamin C and several minerals. Some examples of non-starchy vegetables include spinach, mushrooms, tomatoes, cucumbers, and celery.
There are also low-carb alternatives to pasta, rice, and bread. For example, shirataki noodles are a fantastic addition to the keto diet, with less than 1 gram of net carbs and only 15 calories per serving. These noodles are made from glucomannan, a viscous fiber that forms a gel that slows down food's movement through the digestive tract, helping to decrease hunger and blood sugar spikes.
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Vegetables and fruits to eat like berries and avocados
The keto diet is a low-carb, high-fat diet that can be difficult to follow due to its restrictiveness. It involves limiting carbohydrate intake to 25–50 grams per day, which is significantly lower than the recommended daily intake of 225–325 grams. As a result, many fruits and vegetables are excluded from the keto diet because they are high in carbohydrates.
However, berries are an excellent fruit option for those on the keto diet as they are relatively low in carbs and contain healthy antioxidants. Examples of berries that can be consumed on the keto diet include blueberries, blackberries, raspberries, and strawberries. In addition to being low in carbs, blueberries and blackberries are a good source of fiber, which supports digestion and can help regulate bowel movements. Raspberries are also a source of vitamins C and K, which are important for immune and bone health. Strawberries can be added to Greek yogurt or tossed into a salad.
Avocados, though typically classified as a fruit, are another keto-friendly option. They are packed with healthy monounsaturated and polyunsaturated fats that promote heart health and help the body achieve ketosis. Avocados also provide vitamins, minerals, and fiber. The recommended serving size is one-third of a medium-sized avocado.
When it comes to vegetables, non-starchy vegetables that grow above ground are generally the best choice for those on the keto diet. Examples include leafy salad greens, broccoli, cauliflower, zucchini, bell peppers, and asparagus. These vegetables are high in fiber and antioxidants, and low in carbohydrates.
It is important to note that while the keto diet can lead to weight loss, it may also lead to nutrient deficiencies. It is always recommended to consult a healthcare provider or registered dietitian to determine if the keto diet is suitable for your individual needs and to ensure you are meeting your nutrient requirements.
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Potential health benefits like weight loss and blood sugar management
The ketogenic diet (keto) is a low-carb, high-fat diet that causes weight loss and provides numerous health benefits. The diet is very high in fat, very low in carbs, and relatively low in protein. All foods must be weighed on a scale to achieve a relative weight distribution of 4 grams of fat for every 1 gram of combined protein and carbohydrates eaten throughout the day. In other words, you will likely need to avoid all carb-rich foods (like pasta, potatoes, fruit, etc.).
Keto diets have been shown to help with weight loss. A meta-analysis of 11 studies found that the low-carbohydrate diet group experienced considerable weight reductions compared to the low-fat diet group. Individuals assigned to a very low-carbohydrate ketogenic diet (VLCKD) experienced decreases in body weight, triglycerides, and diastolic blood pressure, as well as increases in HDL-C and LDL-C. Moreover, the VLCKD resulted in more significant long-term weight loss compared to a low-fat diet, suggesting it is a potential alternative option for obesity management.
Keto diets have also been shown to help with blood sugar management. The ketogenic diet can boost insulin sensitivity and cause fat loss, leading to significant health benefits for people with type 2 diabetes or prediabetes. 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. People who followed the keto diet lost an average of 2 pounds (0.9 kg) more than the group that followed a low-fat diet. Additionally, a randomized crossover trial comparing the effects of ketogenic and Mediterranean diets revealed that patients who adhered to a well-formulated ketogenic diet experienced improved glucose control and reduced body weight.
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Frequently asked questions
The keto diet is a high-fat, low-carbohydrate, moderate-protein diet. The diet typically reduces total carbohydrate intake to less than 50 grams a day, with some sources recommending less than 20 grams a day.
Foods that are keto-friendly include eggs, meats, plant-based fats like avocados and coconut oil, and some dairy products like butter, cream, and cheese. Fish and shellfish are also keto-friendly.
Foods that are high in carbohydrates such as cereal, crackers, rice, pasta, bread, and beer should be avoided. Most fruits are also too high in carbs to eat on the keto diet, except for berries.
The keto diet has been shown to be effective for weight loss and can also help with blood sugar management, which may be beneficial for people with type 2 diabetes. The diet has also been used to treat epilepsy and researchers are exploring its potential to help treat age-related brain decline and Alzheimer's disease.
