Madeleine Hull
The Atkins Diet is a four-phase lifetime eating plan that promotes weight loss through a low-carbohydrate diet. The four phases are: Induction, Ongoing Weight Loss (OWL), Pre-Maintenance, and Lifetime Maintenance. The Atkins diet restricts carbohydrates, which come from grains, legumes, and other plant sources. The main idea behind the Atkins diet is to change one's metabolism so that the body burns fat for energy instead of glucose, a process called ketosis.
| Characteristics | Values |
|---|---|
| Number of Phases | 4 |
| Phase 1 | Induction |
| Phase 1 Goal | Change the way body uses nutrients |
| Phase 1 Carb Intake | 20g Net Carbs per day |
| Phase 1 Duration | Minimum of 2 weeks |
| Phase 2 | Ongoing Weight Loss (OWL) |
| Phase 2 Carb Intake | 25-30g Net Carbs per day |
| Phase 3 | Pre-Maintenance |
| Phase 4 | Lifetime Maintenance |
| Phase 4 Carb Intake | 80-120g Net Carbs per day |
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What You'll Learn
Atkins 20 vs Atkins 40
The Atkins diet is a low-carbohydrate diet that promotes weight loss and claims to improve health conditions such as high blood pressure and heart disease. The diet has evolved since its creation in 1972, and there are now two main versions: Atkins 20 and Atkins 40.
Atkins 20 is the original diet, with a starting point of 20 grams of net carbs per day. This plan is typically best for those who have over 40 pounds to lose or are diabetic. Phase 1, also known as Induction, is the strictest part of the diet, where you must avoid all carbohydrates except for 20 grams of net carbs per day. This phase is designed to boost your body's ability to burn fat and motivate you to stick with the diet as you will lose the most weight during this phase. The length of Phase 1 depends on your weight loss goals, and you can stay in this phase until you are 15 pounds away from your goal weight. It is important to note that you should never go hungry during this phase and should eat five or six small meals a day.
Atkins 40 is a less strict version of the diet, with a starting point of 40 grams of net carbs per day. This plan is perfect for those who have less than 40 pounds to lose, are pregnant or breastfeeding, or want a wider variety of food choices from the first day of their diet. Atkins 40 offers flexibility and a range of food choices, including protein, vegetables, and even some pasta and potatoes. It is simple to follow and easy to lose weight on Atkins 40 from day one. This plan focuses on portion control and eating 40 grams of net carbs per day, with three 4-6 ounce servings of protein and 2-4 servings of fat. As you approach your weight loss goals, you can start to increase your carbohydrate portion size.
Both plans aim to change your metabolism so that you burn fat for energy instead of glucose, a process called ketosis. While Atkins 20 has four phases, Atkins 40 dieters can follow the acceptable foods lists from the Atkins 20 plan for all four phases. It is important to note that alcohol should be avoided in the first two weeks of both plans as the body is adapting to a new metabolism of fat burning.
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Phase 1: Induction
Phase 1 of the Atkins diet, also known as Induction, is the strictest part of the diet. It is designed to jumpstart your weight loss by changing the way your body uses nutrients and transforming your body into a fat-burning machine. During this phase, you will significantly reduce your daily net carb intake to an average of 20 grams, with at least 12-15 grams coming from foundation vegetables like salad greens and other non-starchy vegetables. This reduction in carbs will prompt your body to use fat for fuel, resulting in weight loss from this fat-burning metabolism.
The length of the Induction phase depends on your weight loss goals. For some, Phase 1 may only last two weeks, after which you should see significant results. However, you may safely follow it for much longer if you have a lot of weight to lose or prefer to lose weight quickly. You'll stay in this phase until you're 15 pounds away from your goal weight, so Induction may not be necessary for those looking to lose less weight.
During Induction, it is important to eat regularly throughout the day to stay full and reduce the risk of overeating or choosing unhealthy foods. Aim for three regular-sized meals or four to five smaller meals. Do not skip meals or go more than six waking hours without eating. In addition to vegetables, you can also consume three 4-6 ounce servings of protein each day, such as poultry, fish, shellfish, eggs, and red meat. It is also recommended to consume 3 tablespoons of added fat daily, two of which can be replaced with coffee or tea, and another two cups with beef, chicken, or vegetable broth.
It is important to note that the initial loss of water weight is common during Induction, but it can lead to light-headedness and fatigue. To stay hydrated and maintain electrolyte balance, drink at least eight 8-ounce glasses of water each day. You can also add ground flaxseed to a shake or sprinkle wheat bran on a salad or vegetables for added fiber.
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Phase 2: Ongoing Weight Loss
Phase 2 of the Atkins diet is about balancing your diet and maintaining the momentum from Phase 1 to continue progressing towards your weight loss goals. This phase is designed to help your body lose excess weight after the rapid progress of Phase 1.
In Phase 2, you start by eating 25 grams of net carbs daily and then gradually increase your overall carb intake in 5-gram increments. By the end of this phase, you will have determined your personal carb balance, which could be anywhere between 30 and 80 daily grams of net carbs.
During this phase, you will climb the "carb ladder" by slowly adding different foods back into your diet, such as nuts, seeds, berries, and dairy products like cottage cheese and yogurt. The goal is to reintroduce a variety of carbs until you find a healthy diet that suits your needs.
Phase 2 typically lasts until you are within 10 pounds of your goal weight. However, depending on your personal goals, you may choose to transition into Phase 3 sooner. Remember, it is important to be mindful of portion sizes and to calculate your net carb intake by subtracting grams of fiber from total carbs.
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Phase 3: Pre-Maintenance
The Atkins diet is a low-carbohydrate diet for weight loss. It has evolved since its creation in 1972 and now has two versions: Atkins 20 (the original diet) and the newer Atkins 40, which is less strict. The Atkins diet consists of four phases, with the third being 'Pre-Maintenance'.
During this phase, you will continue to take ownership of your new healthy eating habits and approach your goal weight. As you come within 5 to 10 pounds of your goal weight, you will build on your success by perfecting your eating habits for the future. The gradual weight loss during this phase puts you on the right track for a successful transition towards a life of healthy eating and weight maintenance.
During Pre-Maintenance, you can increase your daily carb intake by 10 grams of Net Carbs per week. This is so you can find your carb balance – the ideal level that will allow you to reach your goal weight and maintain it. You can take this phase at your own pace and listen to your body. By the time you reach your goal weight and have kept it there for a month, you should know what amount and type of carbs your body can handle. If your cravings come back or your weight loss stalls, you can lower your carb intake by 10 grams for a week, then introduce an extra 5 grams until you find your level.
Remember, weight loss will be slower as you work to find your carb balance. Be patient, and if you stick to a few rules, you will find the carb limit that will help you stay at your happy weight.
It is important to note that the Atkins diet goes against dietary guidelines put out by many health organizations and medical professionals, including the American Heart Association and the Academy of Nutrition and Dietetics. Many experts caution that eating a diet high in saturated fats can increase your risk of heart disease and cancer. A high-protein diet can be harmful to those who have had previous kidney problems. It is recommended that people on the Atkins diet take an iron-free multivitamin and mineral supplement and an omega-3 supplement that contains fish oil.
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Phase 4: Lifetime Maintenance
Phase 4 of the Atkins diet is the Lifetime Maintenance phase. This is the final phase of the diet, which focuses on maintaining healthy habits for life. By this stage, you should have reached your ideal weight and have a good understanding of how many carbohydrates you can consume to maintain your weight. The main principle of the Atkins diet is to change your metabolism so that your body burns fat for energy instead of glucose, a process known as ketosis.
To achieve this, you will continue to eat a predominantly low-carbohydrate diet, consuming between 80 and 100 Net Carbs per day. During Phase 3, you would have discovered your ACE (Atkins Carbohydrate Equilibrium), which is the ideal amount of carbohydrates for your body to maintain your weight loss. The aim of Phase 4 is to stay within 5 pounds of your goal weight, every day and season, for the rest of your life.
To help you stay on track, it is recommended that you keep healthy snacks and Atkins products readily available to avoid temptation. Atkins offers a range of nutritious and convenient food products that align with the low-carb lifestyle. Additionally, Atkins University provides ongoing classes, active discussion groups, and other resources to empower you to maintain your healthy habits.
It is important to note that the Atkins diet may not be suitable for everyone. Some experts caution that a high-fat, low-carb diet can increase the risk of heart disease and cancer. It is also important to ensure adequate fiber intake, as the diet may be unpalatable and challenging to follow long-term without it. Critics argue that the diet omits important nutrients like vitamin C and potassium, so supplementation may be necessary.
Before starting any significant diet or lifestyle change, it is always advisable to consult with a healthcare professional to ensure it is safe and appropriate for your individual needs.
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Frequently asked questions
The Atkins diet is a four-phase lifetime eating plan. Phase 1 is called Induction, which is the strictest part of the diet. Phase 2 is Ongoing Weight Loss (OWL). Phase 3 is Pre-Maintenance. Phase 4 is Lifetime Maintenance.
Phase 1 is about changing the way your body uses nutrients to kickstart weight loss. Phase 2 is about finding out how many carbs an individual can eat while continuing to lose weight. Phase 3 is about finding your carb balance. Phase 4 is about maintaining your ideal weight by continuing to eat a predominantly low-carbohydrate diet.
The length of Phase 1 depends on your weight loss goals. You stay in this phase until you're 15 pounds away from your goal weight. Phase 2 continues until you are within 5-10 pounds of your target weight. You can move on to Phase 3 once you've reached your target weight and maintained it for a month. In Phase 4, you continue to eat a low-carb diet for life.
