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What is the 1.1 diet menu? A Guide to the Cambridge Weight Plan's Phased Approach

4 min read

Originally launched in 1984 as the Cambridge Diet, the program was rebranded to the 1:1 Diet to emphasize the personal consultant support that guides dieters through its multi-step program. So, what is the 1.1 diet menu? It is a structured, calorie-controlled system that uses a wide variety of proprietary meal replacement products to achieve rapid weight loss.

Quick Summary

The 1:1 diet menu is a flexible, step-based meal plan featuring nutritionally complete products like shakes, soups, and bars, combined with conventional food as you progress.

Key Points

  • Phased Menu: The 1:1 diet operates on a flexible, six-step menu plan, progressing from low-calorie meal replacements to balanced, conventional meals.

  • Meal Replacement Products: The menu heavily features shakes, soups, bars, and other proprietary products designed for full nutritional completeness.

  • One-on-One Support: A dedicated consultant provides personalized guidance, accountability, and help in navigating the different menu steps.

  • Calorie Progression: The diet starts with a very low-calorie intake (440-600 kcal/day) and gradually increases calories as regular food is reintroduced.

  • Hydration is Key: Due to the concentrated nature of the products, dieters must consume at least 2.25 litres of water daily to prevent dehydration.

  • Maintenance Focus: The final steps focus on teaching healthy eating habits and portion control for successful, long-term weight management.

In This Article

Understanding The 1:1 Diet: Beyond the Menu

The 1:1 Diet, a rebrand of the long-standing Cambridge Weight Plan, is more than just a list of meals; it's a comprehensive weight-loss program built around a series of steps and one-on-one personal support. The core of the menu relies on specially formulated, nutritionally complete meal replacement products designed to deliver all necessary vitamins and minerals within a very low-calorie framework. The program's stages guide dieters from an initial, very low-calorie phase using only meal replacements to a more sustainable, long-term maintenance plan that incorporates conventional foods. The personalized guidance from a trained consultant is central to navigating the different steps and achieving lasting results.

The Product-Based Meal Plan

At its heart, the 1:1 diet is a meal replacement program. The manufacturer offers a diverse range of low-calorie products, ensuring dieters have a variety of options to prevent boredom. These products serve as the foundation of the menu, especially in the initial, intensive phases. Examples of the types of meals and products available include:

  • Shakes: Available in flavors like chocolate, strawberry, and banana.
  • Soups: Options such as vegetable and chicken noodle are available.
  • Bars: These are a convenient on-the-go option, with flavors ranging from chocolate to yoghurt-coated.
  • Porridge: A warm, satisfying breakfast option.
  • Savoury Meals: Microwavable dishes like Spaghetti Bolognese or Chilli Con Carne for later steps.
  • Smoothies: A refreshing, fruit-flavored meal replacement option.

The Six-Step Approach to Menu Planning

The 1:1 diet features a flexible menu structure with six distinct steps, allowing a dieter and their consultant to tailor the plan to individual needs and goals.

  • Step 1 (440-600 kcal/day): The most intensive phase, consisting of 3-4 meal replacement products daily. This phase is designed for rapid weight loss and is known as 'Sole Source' or 'Sole Source Plus' depending on the number of products.
  • Step 2 (800 kcal/day): Introduces a limited amount of conventional food, typically a protein-rich meal with vegetables, alongside 3 meal replacement products.
  • Step 3 (1000 kcal/day): Further integrates conventional food with a breakfast, lunch, and dinner, complemented by 2 meal replacement products.
  • Step 4 (1200 kcal/day): Recommended for those with an active lifestyle, this step includes regular meals, snacks, and a couple of products.
  • Step 5 (1500 kcal/day): Focuses on healthy, balanced eating and portion control, with one meal replacement product still included.
  • Step 6 (Maintenance): The final, long-term stage, focusing entirely on healthy eating habits with optional product use for continued support.

Comparing the 1:1 Diet's Menu Phases

Feature Initial Phases (e.g., Step 1) Transition Phases (e.g., Step 3) Maintenance Phase (Step 6)
Calorie Intake Very Low (440-600 kcal) Low to Moderate (1000 kcal) Balanced (1200+ kcal)
Food Source 100% Meal Replacement Products Combination of Products and Conventional Food Primarily Conventional Food, Optional Products
Product Usage 3-4 Products per day 2 Products per day 1 or Fewer Products (as needed)
Focus Rapid weight loss, ketosis Gradual reintroduction of food, habit forming Long-term weight stability, healthy eating
Meal Planning Minimal; products selected with consultant Structured planning of balanced meals Flexible; based on healthy eating principles

The Importance of a Consultant

While the menu is a vital part of the diet, the program's success is heavily influenced by the one-on-one relationship with a consultant. This professional provides personalized advice and acts as a coach and motivator. They help determine the appropriate starting step, customize the product menu, and track progress during weekly check-ins. This personal accountability and tailored guidance are differentiating factors that proponents of the 1:1 diet claim contribute significantly to positive outcomes.

Preparing for and Following the Menu

Before embarking on the most restrictive stages, the 1:1 Diet recommends a pre-diet phase to prepare the body, which involves gradually reducing carbohydrate intake and increasing water consumption. While on the program, it is crucial to stay hydrated by drinking at least 2.25 liters of water daily, as the products are more concentrated than regular food. The products are designed to provide complete nutrition, meaning no additional vitamin supplements are necessary. Exercise recommendations vary by step; during the initial low-calorie phases, only gentle walking is advised, with more strenuous activity permitted in later, higher-calorie stages.

Conclusion

The 1.1 diet menu is a structured, phased system that leverages meal replacement products and personal consultation for weight loss. Its menu is defined not by a rigid, one-size-fits-all approach but by a series of steps that gradually transition a dieter from a very low-calorie, product-based plan to a more traditional, sustainable eating pattern. The variety of products and personalized support are key features aimed at ensuring both effectiveness and adherence. However, as a very low-calorie diet, it is important to follow the program under a consultant's guidance to minimize potential side effects and transition successfully to a long-term maintenance lifestyle. For individuals seeking rapid weight loss with dedicated support, the 1:1 diet menu offers a structured and varied plan to follow. For further information and details on products, consult the official website: The 1:1 Diet by Cambridge Weight Plan.

Frequently Asked Questions

The 1:1 Diet was formerly known as the Cambridge Weight Plan. It was initially developed in the 1960s and was later rebranded to the 1:1 Diet to emphasize the personal one-to-one support from a consultant.

The most intensive initial phase of the diet, Step 1, is a Very Low-Calorie Diet (VLCD) involving 3-4 products that provide 440-600 calories per day.

Yes, a core component of the 1:1 diet is the one-on-one support from a personal consultant. They help determine your starting point, track your progress, and provide guidance throughout the program.

After achieving your target weight, you transition to Step 6, the Maintenance phase. This step focuses on adopting a healthy, balanced diet and maintaining portion control for sustained weight management.

No, alcohol is not permitted during most of the diet, especially the initial phases. It contains calories with no nutritional value and can also increase hunger and lower willpower.

Some hunger and irritability are common in the first couple of days as your body adjusts to the reduced calorie intake. These feelings generally subside as your body enters ketosis.

Yes, all 1:1 diet products are formulated by expert nutritionists to provide a balanced intake of all the vitamins, minerals, and trace elements your body needs.

References

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Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice.