Milly Gaines
The ketogenic diet, commonly known as the keto diet, is a high-fat, low-carbohydrate, and moderate-protein diet. The keto diet is advertised as a weight-loss plan, but it is actually a medical diet that comes with serious risks. It is based on the principle of achieving ketosis, a metabolic state in which the body uses ketone bodies, produced from stored fat, as its primary energy source instead of glucose from carbohydrates. While the keto diet allows for the consumption of various high-fat foods, it is important to prioritize healthy fats like monounsaturated and polyunsaturated fats found in olive oil, avocado, and fatty fish. Additionally, the keto diet may not be suitable for everyone, as it can lead to psychological distress, binge eating, and a drop in blood pressure and blood sugar levels. It is recommended to consult a healthcare professional before starting any restrictive diet like keto.
| Characteristics | Values |
|---|---|
| Carbohydrates | Very low intake, about 5% to 10% of energy intake is from carbohydrates. |
| Fats | High intake, about 70% to 75% of calories. |
| Proteins | Moderate intake, about 20% of calories. |
| Fiber | Risk of insufficient intake, need to eat plenty of plant foods. |
| Weight Loss | Can lead to weight loss, but may not work for everyone. |
| Health Benefits | May provide health benefits like reduced seizures in children with epilepsy. |
| Health Risks | May cause low blood pressure and blood sugar, which can be dangerous for diabetics. |
| Sustainability | May be difficult to sustain due to restrictive nature and potential psychological distress. |
| Flexibility | May require careful tracking of calories and macros to ensure effectiveness and proper portion sizes. |
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What You'll Learn
Keto is a low-carb, high-fat diet
The ketogenic diet, commonly known as the keto diet, is a low-carbohydrate, high-fat diet. It involves reducing carbohydrate intake and replacing it with fat, which supplies up to 90% of daily calories. This shift in the body's metabolism, from burning carbohydrates to burning fat for energy, is known as ketosis.
On a keto diet, the recommended carbohydrate intake is typically between 5% and 10% of total calories, which can be as low as 20 grams of carbohydrates per day. This reduction in carbohydrates leads to lower blood sugar and insulin levels, which can provide health benefits, especially for those with diabetes or insulin resistance.
The high-fat requirement of the keto diet means that followers must eat fat at every meal. Healthy unsaturated fats, such as nuts, seeds, avocados, tofu, and olive oil, are encouraged. Additionally, saturated fats from oils, lard, butter, and cocoa butter are also included in high amounts. Cheese, for example, has zero carbohydrates and is high in fat, making it an excellent fit for the keto diet.
The keto diet has gained popularity as a weight-loss strategy, and studies have shown that it can be effective for short-term weight loss. It is also known to reduce appetite, as fat burns slower than carbohydrates, leading to decreased cravings and a reduced desire to eat. However, concerns have been raised about the sustainability of the keto diet long-term, as it is a restrictive diet.
It is important to note that the keto diet is not suitable for everyone and should be approached with caution. It is recommended to consult a doctor and a registered dietitian before starting the keto diet, as it may come with serious risks and potential negative side effects, especially for those with existing liver or kidney conditions.
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It causes weight loss and has health benefits
The ketogenic diet (keto) is a low-carbohydrate, high-fat diet that causes weight loss and provides numerous health benefits. Carbohydrates are the body's preferred source of energy. However, 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, where the body starts breaking down stored fat into molecules called ketone bodies to use for energy.
The keto diet has been advertised as a weight-loss wonder, and there is anecdotal evidence of people losing weight on the diet. People also report feeling less hungry than on other types of restricted diets. One study found that 349 people with type 2 diabetes who followed a ketogenic diet lost an average of 26.2 pounds (11.9 kg) over a 2-year period. The keto diet can also help manage blood sugar levels, which is especially beneficial for people with type 2 diabetes or prediabetes.
Other health benefits of the keto diet may include lowering your risk for certain diseases. It may lower your risk of developing cardiovascular disease by lowering your blood pressure and improving your HDL ("good") cholesterol levels. The keto diet has also been used to help reduce seizures in children with epilepsy and is being studied for reducing symptoms for patients with progressive neurological disorders like Parkinson's disease and Alzheimer's disease
While the keto diet can be effective for weight loss and provide health benefits, it is not suitable for everyone and should not be undertaken as an experiment. It is a restrictive diet that can be difficult to follow and may produce side effects such as "keto" breath and constipation. Experts recommend prioritising healthy fats like monounsaturated and polyunsaturated fats found in olive oil, avocado, and fatty fish to promote heart health.
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It can reduce seizures in children with epilepsy
The ketogenic diet is a high-fat, moderate-protein, and very low-carbohydrate diet. Carbohydrates are the body's preferred source of energy. However, on a strict ketogenic diet, only 5% to 10% of energy intake comes from carbohydrates. This reduction in carbohydrates puts the body into a metabolic state called ketosis, where the body starts breaking down stored fat into molecules called ketone bodies to use for energy.
The ketogenic diet was traditionally used in clinical settings to reduce seizures in children with epilepsy whose seizures could not be controlled by medications. It is not entirely clear how the diet helps reduce seizures, but researchers have found that a particular fatty acid called decanoic acid may play a role in the way the diet works. The diet may not work for everyone, but it is suitable for many different seizure types and epilepsy syndromes. Several studies have shown that the ketogenic diet does reduce or prevent seizures in many children. Over half of the children who go on the diet experience at least a 50% reduction in the number of seizures they have, and some children, usually 10-15%, become seizure-free.
The ketogenic diet is very challenging to prepare, as all foods must be weighed using a food scale. The diet is not nutritionally balanced, and children following it will need vitamin and mineral supplements. The diet is carefully calculated by a dietitian, who will try to include foods that the child likes. The diet can be adapted to diets from different cultures and for people with allergies or those on modified texture diets. The diet must be strictly followed, and even one small snack that is high in carbohydrates can stop ketosis. The diet is usually used in conjunction with anti-seizure medication, and children may be able to take smaller doses or fewer medicines once they start the diet.
The ketogenic diet is not suitable for everyone. It may not be appropriate for children with severe feeding problems or conditions where a high-fat diet would cause problems. Before starting the diet, children are admitted to the hospital for 4 to 5 days while their body starts making ketones, and they may not be able to eat for 1 to 2 days until ketones are measured in their urine.
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It's important to eat enough fibre
The ketogenic diet (keto) is a low-carb, high-fat diet that causes weight loss and provides numerous health benefits. Carbohydrates are the body's preferred source of energy. 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, where the body starts breaking down stored fat into molecules called ketone bodies to use for energy.
Fiber is important for everyone, regardless of your eating plan. It is especially important to get enough fiber on a keto diet because high-fat diets slow digestion and decrease GI motility. The USDA's 2020-2025 Dietary Guidelines for Americans set a goal of 28 to 34 grams of fiber per day, depending on age and sex. A poorly planned keto diet is at risk of being deficient in fiber, which can lead to constipation. Fiber plays a key role in digestive health as it keeps stools soft and bulky, per the Mayo Clinic.
There are some high-fiber foods that are suitable for a keto diet. Nuts, such as pecans and almonds, are good sources of fiber. Seeds, such as flax seeds, are also a good option as they are high in fiber and omega-3 fatty acids. Avocados are another food that can provide fiber on a keto diet. Some people also include small amounts of berries, which usually have a low number of carbohydrates.
It is important to note that not everyone agrees on the importance of fiber. Some people on the keto diet claim that they have not eaten fiber in years and their digestion is better than ever. Others suggest that fiber is a "boomer myth" and that any nutritional benefits it provides can be obtained from other sources.
If you are considering starting a keto diet, it is important to consult a registered dietitian to ensure that you are meeting all your nutrient needs.
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It can be hard to sustain and may have health risks
The keto diet is a low-carb, high-fat diet that causes weight loss and provides numerous health benefits. Carbohydrates are the body's preferred source of energy, but on a strict ketogenic diet, energy intake from carbohydrates is restricted to about 5% to 10%. The reduction of carbohydrates puts the body into a metabolic state called ketosis, where the body starts breaking down stored fat into ketone bodies to use for energy.
However, the keto diet can be challenging to sustain due to its stringent food restrictions. It eliminates many nutrient-dense foods, including high-carb fruits, starchy vegetables, whole grains, and beans. As a result, the keto diet can lead to nutritional deficiencies over time, lacking vitamins, minerals, fiber, and phytochemicals found in these food groups. The lack of fiber in the diet can also cause digestive discomfort and constipation.
Furthermore, the keto diet is associated with an increased risk of kidney stones due to the higher consumption of animal foods, which can lead to more acidic urine. The diet's high intake of saturated fat and restriction of healthy unsaturated fats can also negatively impact heart health, increasing "bad" LDL cholesterol linked to heart disease.
Additionally, the keto diet may not be suitable for individuals with type 1 diabetes due to the risk of hypoglycemia, which can have severe consequences if untreated. The diet has also been linked to impaired bone health, with studies showing a decrease in bone mineral density.
While the keto diet can be effective for short-term weight loss, it may be challenging to sustain due to its restrictive nature and potential health risks. It is important to carefully consider these risks and make informed decisions about adopting the keto diet, preferably under medical supervision.
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Frequently asked questions
Yes and no. The keto diet is a low-carb, high-fat, and moderate-protein diet. While you can eat as much fat and protein as you want, you should be careful not to overeat, as this will lead to weight gain. Additionally, it is important to ensure you are getting enough fibre and B vitamins, as these are often lacking in a keto diet.
Foods that are typically included in a keto diet are fish and seafood, meat and poultry, non-starchy vegetables like broccoli and zucchini, avocados, berries, nuts and seeds, eggs, high-fat dairy products, olive oil and other oils, and high-cocoa chocolate.
The keto diet excludes carb-rich foods like grains, beans, fruits, and starchy vegetables. It is important to note that all fruits are rich in carbs, but some berries can be consumed in small portions.
The keto diet can lead to weight loss and has been shown to reduce seizures in children with epilepsy. It may also provide other health benefits, such as lower blood sugar and insulin levels, improved gut health, and reduced appetite.
