The ketogenic, or keto, diet is a low-carb, high-fat eating plan that has been used to treat specific medical conditions for centuries. The keto diet is distinctive for its exceptionally high-fat content, typically 70% to 80%, though with only a moderate intake of protein. The premise of the keto diet is that by depriving the body of glucose, the main source of energy for all cells in the body, an alternative fuel called ketones is produced from stored fat.
The keto diet typically reduces total carbohydrate intake to less than 50 grams a day, and can be as low as 20 grams a day. The lower your carbs are, the quicker your glycogen gets depleted, and the sooner you enter ketosis. The standard keto diet consists of 70% fat, 20% protein, and 10% carbs.
The keto diet has been shown to produce beneficial metabolic changes in the short term, including weight loss, improved insulin resistance, lower blood pressure, and reduced cholesterol and triglycerides. However, it is important to note that the keto diet may not be suitable for everyone and can cause side effects such as the keto flu, which includes symptoms like difficulty focusing, less energy for intense exercise, and digestive discomfort.
Characteristics | Values |
---|---|
Carbohydrate intake | Typically, up to 50 grams per day, but can be as low as 20 grams per day. |
Fat intake | 70-80% of total daily calories, or higher. |
Protein intake | Moderate; typically 10-20% of total daily calories, or 20-30% of calories. |
Calorie intake | 2000 calories per day is a common benchmark used in keto diet research. |
What You'll Learn
The keto diet is a low-carb, high-fat diet
The keto diet typically reduces total carbohydrate intake to less than 50 grams a day and can be as low as 20 grams a day. This means cutting out foods such as bread, pasta, rice, potatoes, corn, fruit juices, beans, legumes, and most fruits.
On the keto diet, fat should make up about 70-80% of total daily calories. This includes both saturated and unsaturated fats. Foods such as fatty cuts of meat, lard, butter, nuts, seeds, avocados, and oily fish are encouraged.
Protein intake is moderate on the keto diet, making up about 10-20% of total calories. This is because eating too much protein can prevent ketosis, as the amino acids in protein can be converted to glucose. Good sources of protein on the keto diet include meat, fish, eggs, and nuts.
The keto diet is distinctive for its exceptionally high-fat content. It puts your body into a metabolic state called ketosis, where your body burns fat for energy instead of carbohydrates. This can lead to weight loss and improved health markers, such as reduced insulin resistance, lower blood pressure, and improved cholesterol levels.
However, the keto diet can be challenging to maintain and may cause some unpleasant side effects, such as hunger, fatigue, irritability, and constipation. It is also important to note that the keto diet may not be suitable for everyone, especially those with certain medical conditions or who are taking specific medications.
If you are considering starting the keto diet, it is important to consult with your healthcare provider first to ensure it is safe for you.
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It limits carbs to 20-50 grams per day
The keto diet is a low-carb, high-fat diet that limits carbohydrates and replaces them with fats, putting the body into a state of ketosis. To stay in ketosis, a person's daily intake of carbohydrates should be limited to up to 50 grams. This is because when the body is deprived of glucose, the main source of energy, it begins to burn fat for fuel, producing ketones.
The number of carbs allowed on a keto diet can vary between 20 and 50 grams per day. This range is suitable for most individuals aiming to enter ketosis, and it is typically recommended for those consuming 2,000 calories per day. However, some people may need to further restrict their carb intake to reach and maintain ketosis.
The keto diet's effectiveness in achieving ketosis depends on limiting carbs to a maximum of 50 grams per day. This limit ensures that the body shifts from using glucose as its primary energy source to burning fat for fuel. The transition to ketosis can be challenging, and some people may experience what is known as the "`keto flu," which includes symptoms like fatigue, digestive discomfort, and decreased exercise performance.
For those new to the keto diet, starting with the upper limit of 50 grams of carbs per day is recommended. This approach is more manageable and can help reduce the unpleasant symptoms associated with the initial phase of carb restriction. Additionally, individuals who engage in intense workouts may be able to consume slightly more than 50 grams of carbs without disrupting ketosis.
It is important to note that the keto diet is not just about restricting carbs; it also involves consuming moderate amounts of protein and increasing healthy fats. The standard ketogenic diet typically consists of 70% fat, 20% protein, and 10% carbs.
To summarise, staying within the recommended carb range of 20 to 50 grams per day is crucial for achieving and maintaining ketosis on the keto diet. This range may vary depending on individual factors, and it is always advisable to consult with a healthcare professional before starting any new diet, especially one as restrictive as keto.
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It includes meat, fish, eggs, nuts, oils, avocados, and low-carb veggies
The ketogenic diet is a low-carb, high-fat diet that offers many health benefits. It involves drastically reducing carbohydrate intake and replacing it with fat. This reduction in carbs puts your body into a metabolic state called ketosis.
When following a keto diet, the idea is to eat very few carbs, a moderate amount of protein, and just enough fat to feel satisfied. The standard ketogenic diet consists of 70% fat, 20% protein, and 10% carbs.
Meat
Meat is a great source of protein on the keto diet. It is recommended to choose grass-fed beef and free-range poultry, which offer slightly higher amounts of omega-3 fats. Other options include pork, bacon, wild-caught fish, organ meats, and tofu.
Fish
Fatty fish, such as salmon, trout, tuna, and mackerel, are excellent choices on the keto diet. They provide healthy fats and important nutrients like omega-3 fatty acids.
Eggs
Eggs are a versatile and nutritious food that can be included in a keto diet. They are a good source of protein and healthy fats, and can be prepared in a variety of ways.
Nuts
Nuts are a convenient and tasty snack option for those following a keto diet. Examples include macadamia nuts, walnuts, almonds, and pecans. However, it is important to consume nuts in moderation due to their carb and calorie content.
Oils
Healthy oils, such as extra virgin olive oil and avocado oil, are recommended on the keto diet. These oils provide flavour and essential fatty acids.
Avocados
Avocados are a delicious and nutritious fruit that is well-suited for the keto diet. They are high in healthy fats and contain important vitamins and minerals.
Low-carb veggies
Non-starchy vegetables that grow above the ground are generally keto-friendly. Some examples include leafy greens (kale, spinach), broccoli, cauliflower, tomatoes, onions, peppers, and asparagus.
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It excludes bread, rice, pasta, beans, legumes, and some fruits
The keto diet is a low-carb, high-fat diet that can be effective for weight loss and certain health conditions. 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 your body uses fat for fuel instead of carbs.
The keto diet excludes a wide range of foods, including bread, rice, pasta, beans, legumes, and some fruits. These foods are high in carbohydrates and should be limited or avoided on a keto diet.
Bread, rice, and pasta are all wheat-based products that are high in carbs. Beans and legumes are also high in carbohydrates and should be avoided.
When it comes to fruit, not all fruits are created equal on the keto diet. While some fruits are too high in carbs and should be avoided, others can be included in small portions. Berries, for example, are lower in carbs and can be part of a keto diet.
It is important to note that the keto diet is not just about limiting carbs. It also involves getting enough fat and moderate amounts of protein. The standard ketogenic diet typically consists of 70% fat, 20% protein, and 10% carbs.
The keto diet can be challenging to follow due to the restriction of several food groups. It may also lead to some initial side effects, such as the "keto flu," which includes symptoms like difficulty focusing, less energy, and digestive discomfort. However, these symptoms are usually temporary and can be minimized by staying hydrated and replenishing electrolytes.
Overall, the keto diet has been shown to be effective for weight loss and improving health conditions such as type 2 diabetes and metabolic syndrome. It is important to consult with a healthcare professional before starting any new diet, especially one as restrictive as the keto diet.
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It may cause side effects like keto flu, kidney stones, and nutrient deficiencies
The keto diet has been associated with several side effects, including keto flu, kidney stones, and nutrient deficiencies.
Keto flu is a group of symptoms that may appear two to seven days after starting a ketogenic diet. Symptoms can include headache, brain fog, fatigue, irritability, nausea, difficulty sleeping, and constipation. While it is not a medically recognised condition, thousands of people have reported experiencing these symptoms after starting a keto diet. The exact cause of keto flu is unknown, but it may be related to a detox factor, carb withdrawal, an immunologic reaction, or a change in the gut microbiome.
Kidney stones are another potential complication of the keto diet. The prevalence of kidney stones in people on the keto diet is 3-10%, compared to 1 in several thousand in the general population. Chronic acidosis, dehydration, low urine pH, and fat malabsorption are all contributing factors to the formation of kidney stones in people on the keto diet.
The keto diet may also lead to nutrient deficiencies, as certain foods are limited or eliminated. In particular, a keto diet may be lower in fibre and certain vitamins and minerals, such as vitamin B1, vitamin B6, vitamin B7, vitamin B12, calcium, iron, magnesium, and phosphorus. These nutrients are essential for proper body function, and deficiencies can lead to additional health concerns.
It is important to note that the keto diet is not suitable for everyone and should be approached with caution. Consulting with a doctor or healthcare professional before starting any new diet, including the keto diet, is highly recommended.
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Frequently asked questions
Generally, a person should consume up to 50 grams of carbs per day to stay in ketosis. However, some keto diets allow for a maximum of 20 grams of carbs per day.
Net carbs refer to the number of carbs that the body can completely digest and convert into glucose for energy. Total carbs include both digestible and indigestible carbs.
Keto-friendly foods include meat, fish, eggs, nuts, seeds, healthy oils, avocados, and low-carb vegetables.
Foods that are high in carbs should be limited or avoided, including sugary foods, grains, starches, most fruits, beans, legumes, root vegetables, alcohol, and unhealthy fats.
Potential risks and side effects may include kidney stones, vitamin and mineral deficiencies, elevated LDL-cholesterol levels, and increased uric acid levels. It is important to consult with a healthcare professional before starting any new diet.