Brenda Khan
The ketogenic diet, also known as the 'keto' diet, is a low-carbohydrate, high-fat eating plan that has been used for centuries to treat specific medical conditions. The diet typically consists of 70-75% fat, 20% protein, and 5-10% carbs. It involves consuming a very low amount of carbohydrates, with carbs replaced by fat for energy, and the goal of promoting the body's fat-burning process. The keto diet includes foods such as meat, fish, oils, nuts, cheese, and low-carb vegetables. It restricts carb-rich foods such as bread, pasta, rice, cereals, potatoes, and corn. The diet has gained attention as a potential weight-loss strategy, and there is also growing interest in its use for type 2 diabetes and other medical conditions.
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High-fat foods
The ketogenic diet is a low-carb, high-fat diet. It 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.
Healthy fats that are recommended for the keto diet include:
- Nuts: Almonds, walnuts, pecans, pistachios, cashews, and Brazil nuts are all good choices. Nuts are associated with a reduced risk of heart disease and certain cancers.
- Avocados: Avocados are a good source of healthy fats and can be added to various dishes.
- Olive oil: This is a healthy fat option that can be used for cooking or as a dressing.
- Sesame oil and avocado oil: These oils can be used to increase the fat content of dishes.
- Butter: Butter is a rich source of butyrate, which may promote brain health. Organic butter from grass-fed cows may have a more favorable composition of fats.
- Cheese: Cheese is a good source of protein and calcium. However, it is also high in saturated fat, so it should be consumed in moderation.
- Chia seeds: Chia seeds are rich in healthy fats and fiber, making them a perfect addition to a keto diet. They can be added to yogurt, salads, roasted vegetables, smoothies, or soups.
- Hemp hearts: Hemp hearts are nutrient-dense and provide a good boost of fat. They have a mild flavor and can be easily added to various dishes.
- Fatty fish: Fatty fish like salmon, tuna, anchovies, and sardines are excellent sources of healthy fats and protein.
- Yogurt: Keto-friendly yogurts made from cow's milk can provide calcium, probiotics, fat, and protein while being low in sugar and carbs.
Some other high-fat foods that can be included in a keto diet, but should be consumed in moderation, include:
- Coconut oil: Coconut oil is controversial due to its high levels of saturated fats. It is recommended to consume it in moderation and prioritize healthier unsaturated fats.
- Heavy cream: Heavy cream is a good source of fat but also contains saturated fat, so it should be consumed in moderation.
- Red meats: Fatty meats like beef, lamb, and pork are high in saturated fat, so they should be limited. Instead, opt for leaner meats like skinless chicken or turkey.
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Low-carb drinks
The ketogenic diet is a low-carb, high-fat diet that aims to drive the body into a metabolic state called ketosis, where the body burns stored fat as a source of energy instead of carbohydrates. This diet can be an effective way to lose weight, especially for people with obesity, and may also help improve cognition for people with Alzheimer's disease.
When it comes to drinks, it is important to avoid sugar-filled beverages and opt for low-carb options instead. Here are some keto-friendly drink choices:
- Water: This is the best choice for hydration and should be consumed throughout the day. Sparkling water can be a great alternative to soda, and you can add flavour to your water with lemon or lime juice.
- Tea: Unsweetened tea, especially green tea, is a good option as it may provide health benefits. Tea is rich in antioxidants and can help improve heart health. Herbal teas like chamomile, peppermint, and rooibos are also recommended.
- Coffee: Unsweetened coffee is another nearly calorie- and carb-free option. Adding heavy cream can provide flavour.
- Nut Milk: Dairy milk is not keto-friendly, but unsweetened almond milk or coconut milk are good alternatives.
- Alcohol: Alcohol should be restricted, but occasional low-carb drinks like vodka or tequila mixed with soda water are acceptable.
It is important to note that while the keto diet can be effective for weight loss, it is very restrictive and can be challenging to maintain. It may also lead to nutritional deficiencies, so it is always recommended to consult a medical professional before starting any new diet.
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Restricted alcohol
The ketogenic diet is a low-carb, high-fat diet. It aims to drive the body into a metabolic state called ketosis, where the body burns stored fat as a source of energy instead of carbohydrates. While on a ketogenic diet, it is recommended to restrict alcohol consumption.
Alcoholic drinks are often high in carbohydrates, and even those that are not can still be unhealthy when consumed in excess. Beer, for example, is typically high in carbs, and a single serving may contain too many carbs for a ketogenic diet. However, there are low-carb "light" beers available that could be consumed in moderation while on the keto diet. Wine also contains carbohydrates, so the quantity consumed must be closely monitored to remain in a ketogenic state.
Pure spirits such as gin, vodka, whiskey, tequila, and the like are free of carbohydrates and can be enjoyed occasionally on the keto diet. However, common mixers like soda, juice, and sweet liqueurs are often sugary and high in carbs, so it is best to avoid mixing spirits with these. Instead, consider mixing spirits with soda water or drinking them straight.
It is important to note that drinking alcohol does not necessarily kick you out of ketosis, but moderation and planning are crucial. Additionally, a ketogenic diet has been found to reduce alcohol cravings in individuals with alcohol use disorder, so incorporating alcohol into your keto diet may be easier than you think.
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Non-starchy vegetables
The ketogenic diet is a low-carb, high-fat, and moderate-protein diet. It aims to drive the body into a metabolic state called ketosis, where the body burns stored fat instead of carbohydrates for energy. To achieve ketosis, the diet restricts highly processed foods, trans fats, and high-carb foods and drinks.
Some other non-starchy vegetables that can be enjoyed on a ketogenic diet include cucumbers, zucchini, celery, tomatoes, mushrooms, bell peppers, and arugula. These vegetables are versatile and can be prepared in a variety of ways, such as raw, roasted, grilled, stir-fried, steamed, or mashed.
To enhance the flavour of these vegetables, herbs such as parsley or cilantro, acidic additions like vinegar or lemon juice, or fat-rich dips like pesto or tzatziki sauce can be used. Additionally, healthy fats like olive oil, nuts, seeds, and avocados can be added to non-starchy vegetables to increase their fat content, which aligns with the ketogenic diet's emphasis on high-fat consumption.
It is important to note that the ketogenic diet may lead to nutritional deficiencies and constipation due to the limited food choices. Therefore, it is recommended to consult a healthcare provider or a registered dietitian before starting the diet to ensure adequate nutrient intake and avoid potential health issues.
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Weight loss
The ketogenic diet is a low-carb, high-fat diet that has gained popularity as a weight-loss strategy. The diet aims to drive the body into a metabolic state called ketosis, where it burns stored fat for energy instead of carbohydrates. This diet typically involves consuming less than 50 grams of carbohydrates per day and emphasises the consumption of high-fat foods.
When following a ketogenic diet for weight loss, it is important to focus on consuming healthy fats, such as monounsaturated and polyunsaturated fats, found in foods like avocados, nuts, seeds, plant oils, and fatty fish. It is also crucial to include low-carb vegetables, such as leafy greens, to ensure adequate nutrient intake. Additionally, snacking between meals can help moderate hunger and keep you on track. Some keto-friendly snack options include nuts, seeds, and cheese.
While the ketogenic diet can be effective for weight loss, it may be difficult to maintain due to its restrictive nature. It is important to consult a medical professional before starting the keto diet, as it may not be suitable for everyone. Additionally, working with a nutritionist can help ensure you are getting the proper amount of nutrients and calories based on your individual needs and goals.
One of the key benefits of the ketogenic diet for weight loss is its ability to suppress hunger. The high-fat content of the diet may lead to increased feelings of satiety, making it easier to stick to the diet and creating a calorie deficit, which is necessary for weight loss. However, it is important to note that long-term weight loss depends on sustained caloric deficits and metabolic adaptation, rather than just short-term glycogen depletion and water loss.
The ketogenic diet has been shown to be effective for weight loss in the short term, especially for those with obesity. However, studies have found that long-term weight loss results after 12 months tend to be similar to those achieved with a normal, healthy diet. Additionally, there is a risk of regaining weight once the diet is stopped, as reported by Baljash Singh Cheema, a cardiologist at Northwestern Medicine Bluhm Cardiovascular Institute. Therefore, it is important to adopt healthier eating habits after the keto diet to maintain weight loss.
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Frequently asked questions
A ketogenic diet, also known as a keto diet, is a low-carb, high-fat 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.
A ketogenic diet involves eating high-fat foods such as fatty fish, red meat, nuts, cheese, butter, oils, and avocado. It is recommended to prioritise healthy fats such as monounsaturated and polyunsaturated fats. It is also important to eat plenty of non-starchy, low-carb vegetables such as leafy greens, kale, and spinach.
A ketogenic diet involves limiting carbohydrates and highly processed foods. Carb-rich foods that are banned from the diet include bread, pasta, rice, cereals, starchy vegetables (like potatoes and corn), and fruit juices. It is also recommended to limit alcohol consumption.
