Dante Carrillo
The Atkins diet is a low-carbohydrate eating plan created by cardiologist Robert Atkins in the 1970s. It involves restricting carbohydrates while eating mostly fats and proteins. The diet claims to offer a high-calorie way to stay thin forever and has been popular worldwide since the early 2000s. While it has been criticised by some health organisations as nutritionally unbalanced, it has also been shown to be effective for weight loss and can lead to various health improvements.
| Characteristics | Values |
|---|---|
| Creator | Robert Atkins |
| Type of diet | Low-carbohydrate, high-fat, high-protein |
| Recommended for | Weight loss |
| Effectiveness | 0.1% to 2.9% more weight loss at one year compared to control groups which received behavioural counselling for weight loss |
| Criticism | Nutritionally unbalanced, may increase the risk of heart disease |
| Alcohol | Allowed in small amounts, e.g. dry wines with no added sugars |
| Plant-based | Possible, but requires extra planning |
| Typical food sources | Meat, fatty fish, dairy, avocado, nuts, seeds, olive oil, coconut oil, soy, beans, eggs, cheese, butter, heavy cream, etc. |
| Number of phases | 4 |
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What You'll Learn
Low-carb, high-fat, high-protein
The Atkins diet is a low-carbohydrate, high-fat, high-protein diet. It was devised by Robert Atkins in the 1970s and rose to popularity in the early 2000s. The diet claims that restricting carbohydrates is crucial to weight loss and that it offers "a high-calorie way to stay thin forever".
The diet recommends eating high-fat sources of protein, typically from meat, fatty fish, and dairy. About 43% of what you eat should come from healthy plant-based fat sources such as avocado, nuts and seeds, olive oil, and coconut oil. About 31% of your food should be protein from plant-based sources like soy or beans. Lacto-ovo-vegetarians can also eat eggs, cheese, butter, heavy cream, and other high-fat dairy foods.
The Atkins diet is usually recommended for weight loss. Proponents of the diet claim that you can lose weight while eating as much protein and fat as you want, as long as you avoid foods high in carbs. The diet has been criticised for being nutritionally unbalanced and may increase the risk of heart disease due to its high saturated fat content.
A low-carb, high-fat, high-protein diet may have several physical and cognitive benefits, but some studies suggest there may be risks. A balanced diet of complex carbs, lean proteins, and healthy fats is optimal. High-protein, low-carb diets have become increasingly popular as a means of encouraging weight loss while maintaining or increasing muscle mass.
A low-carb, high-fat, high-protein diet may help improve body composition. Research shows that increasing protein intake while cutting calories can maintain muscle mass while promoting fat loss. High-protein diets may help increase muscle mass when combined with resistance training. A small study also suggests that this type of diet may help improve cardiometabolic factors, such as lowering blood pressure, cholesterol, and triglyceride levels. However, research on the benefits of this diet for heart health is mixed.
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Weight loss
The Atkins diet is a low-carbohydrate diet, usually recommended for weight loss. It was created by cardiologist Robert Atkins in the 1970s and gained popularity in the early 2000s. The diet involves restricting carbohydrates while consuming high amounts of fat and protein. The goal is to shift the body's metabolism to burn fat for energy instead of carbohydrates, a process called ketosis.
The Atkins diet consists of four phases, each with specific guidelines for carbohydrate intake. In the first phase, induction, individuals limit their carbohydrate intake to under 20 grams per day for two weeks, primarily from low-carb vegetables like leafy greens. This phase aims to kick-start weight loss and motivate individuals to continue the diet.
In the second phase, balancing, people slowly add more nutrient-dense and fibre-rich foods, such as nuts, seeds, low-carb vegetables, and small amounts of fruit, back into their diet. This phase continues until they are close to their goal weight.
The third phase, fine-tuning, is about learning how to maintain weight loss and lose the last few pounds. People continue to add a variety of carbohydrates to their diet, finding out how many carbs they can eat while still losing weight.
The fourth and final phase is lifetime maintenance. Once the desired weight is achieved, individuals continue to eat a predominantly low-carbohydrate diet for life, with the understanding of how many carbohydrates they can consume without regaining weight.
Proponents of the Atkins diet claim that it can lead to significant weight loss, especially in the initial phases. Some studies have shown that the Atkins diet can result in similar or greater weight loss compared to other diets when followed for at least 12 months. However, there is limited evidence of its effectiveness in achieving long-term weight loss, and critics argue that the weight lost during the initial phases may be primarily due to increased water loss. Additionally, the high saturated fat content of the Atkins diet has been a subject of concern, with some research suggesting it may increase the risk of heart disease.
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Health concerns
The Atkins diet has been a subject of controversy since its introduction in the 1960s. While it has been praised for its weight-loss benefits and ease of use, it has also been criticised for its potentially negative health impacts.
The Atkins diet is a high-protein, low-carbohydrate weight-loss plan. The diet focuses on eating plenty of fat, some protein, and very few carbohydrates. The goal is to change the metabolism so that the body burns stored body fat instead of carbohydrates for energy. This process is known as ketosis, where the breakdown of fatty acids produces ketones, which are chemicals made in the liver when the body doesn't get enough glucose or carbohydrates. While this can lead to initial weight loss, it can also result in metabolic dehydration, where the body consumes its own stored water, leading to side effects such as nausea, dizziness, constipation, headache, fatigue, and bad breath.
One of the main concerns with the Atkins diet is the potential impact on heart health. The American Heart Association has issued warnings against high-protein, high-fat, low-carbohydrate diets, stating that they can increase oxidative stress on the heart muscle and lead to serious, even fatal, consequences. The increased intake of saturated fats and processed meats associated with the Atkins diet may also raise the risk of heart problems.
The Atkins diet has also been linked to an increased risk of certain types of cancer, particularly colon cancer. A diet low in fibre and high in protein has been shown to affect the balance of gut bacteria, potentially impacting the health of the colon. Additionally, the reduced intake of fruits and vegetables on the Atkins diet can result in lower consumption of important vitamins, minerals, and disease-fighting phytochemicals, which may have negative health consequences.
Kidney problems are another concern with the Atkins diet. High protein intake can lead to hyperuricemia, resulting in joint pain and gout, and hypercalcuria, which can cause kidney stones, hypocalcemia, and osteoporosis. Studies have shown that high-protein diets may also cause permanent loss of kidney function, especially in individuals who already have reduced kidney function.
Other potential side effects of the Atkins diet include electrolyte imbalances, constipation, dangerously low blood sugar, and hair loss. It is important to note that the long-term effects of the diet are not well understood, and there is limited research on its impact on overall health. As with any diet, it is always recommended to consult with a healthcare professional before making significant dietary changes.
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Atkins 20 and Atkins 40
The Atkins diet is a low-carbohydrate diet for weight loss that encourages eating more protein and fat. It is based on the idea that reducing the number of carbohydrates in one's diet will lead to weight loss as the body will burn stored fat for energy instead of carbohydrates. The Atkins diet also focuses on controlling insulin levels and eating more high-fibre vegetables.
The Atkins 20 and Atkins 40 are two versions of the Atkins diet with different phases. Atkins 20 is the original approach, designed for those who have over 40 pounds to lose or are diabetic. It starts with an "induction" phase that limits net carbs to 20 grams per day. In the next phase, net carbs are added back in 5-gram increments, along with antioxidant-rich berries, nuts, seeds, and more vegetables. Atkins 20 has three phases in total, with the third phase starting when an individual is within 10 pounds of their goal weight.
On the other hand, Atkins 40 is a more flexible option for those who have less than 40 pounds to lose. It allows for a wider variety of food choices from the beginning, with a starting point of 40 grams of net carbs per day. Atkins 40 focuses on portion control and gradually increasing carbohydrate portion sizes as one approaches their weight loss goals. This plan includes three to five servings of food from food groups such as fruit, dairy, nuts, whole grains, and even wine. Vegetarians and vegans can also follow Atkins 40, starting with 40 grams of net carbs and including nuts, seeds, legumes, and high-protein grains.
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Vegetarian and vegan Atkins
The Atkins diet is a low-carbohydrate diet devised by Robert Atkins in the 1970s. It is usually recommended for weight loss and promotes the unlimited consumption of protein and saturated fat. The diet has been criticised by health organisations for being nutritionally unbalanced and potentially increasing the risk of heart disease.
The traditional focus of the Atkins diet has been on eating lots of meat, particularly in the initial "induction phase". However, this does not mean that vegetarians and vegans cannot follow a modified version of the Atkins diet. One such alternative is the Eco-Atkins diet, which was developed by researchers at St. Michael's Hospital in Toronto. The Eco-Atkins diet has the same ratio of protein to carbs as the original Atkins diet but replaces high-fat animal protein with vegetable protein. Tofu, eggs, cheese, and beans are the main sources of protein for vegetarians, while vegans can get their protein from soy products, nuts, beans, and gluten.
Vegetarians and vegans following the Atkins diet should ensure they are getting enough healthy plant-based fats, such as avocado, nuts, seeds, olive oil, and coconut oil. About 43% of what they eat should come from these sources. Additionally, 31% of their food should be protein from plant-based sources. Lacto-ovo-vegetarians can also include eggs, cheese, and other high-fat dairy foods in their diet.
For those following a vegetarian or vegan Atkins diet, it is recommended to start with Atkins 20 Phase 2, which is the \"balancing\" phase. This phase allows for more carbs and slowly reintroduces certain foods to determine the proper balance for the individual. Atkins 40 is another option, which provides more flexibility and leeway on carbs. This plan starts with 40 grams of net carbs daily and adds 10 grams weekly after getting within 10 pounds of the weight goal.
It is important to note that the Atkins diet, in general, may be too restrictive for most people to stick with in the long run. Additionally, due to heavy restrictions, limited protein sources, and a higher carb count, the induction phase may prove difficult for vegetarians and Eco-Atkins dieters. A daily multivitamin and fish oil supplement are recommended for vegetarians and vegans following the Atkins diet, with flax oil as a substitute for vegans.
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Frequently asked questions
The Atkins diet is a low-carbohydrate diet devised by cardiologist Robert Atkins in the 1970s. It involves restricting carbohydrates and eating mostly fat and protein, with the aim of burning body fat instead of carbohydrates for energy.
The Atkins diet focuses on eating protein and fat, such as meat, fatty fish, and dairy. It also includes vegetables, low-glycemic fruits, nuts, seeds, legumes, and whole grains. Alcohol can be consumed in small amounts, but high-carb drinks like beer should be avoided.
The Atkins diet is marketed as a way to lose weight without counting calories. It may also help to reduce seizures in people with epilepsy. However, there is limited evidence of its effectiveness for weight loss, and it has been criticised by some health organisations as being nutritionally unbalanced and potentially increasing the risk of heart disease.
