Our Approaches

The Fast 800 is flexible. All three approaches follow the principles of a moderately low-carb, Mediterranean-style diet. You can switch easily between each approach as your needs change – some people start with The Very Fast 800 (our 800 calorie diet) if they have a significant amount of weight to lose, or to kick start weight loss, while others start with The New 5:2 or The Way of Life for gradual weight loss or to improve their overall health.

Flexibility and finding what works for you are pivotal in maintaining a long-term, sustainable lifestyle. The Fast 800 is designed to complement your life and any event, holiday or challenge that comes with it.

the very fast 800 : Rapid weight loss

The Very Fast 800: What is it?

The rapid weight loss phase involves eating 800 calories a day. The key to feeling satiated, while restricting calories, is to consume a moderately low-carb Mediterranean-style diet, rich in protein, fibre and healthy fats.

If this approach is right for you, we recommend that you stay on this stage for a minimum of 2 weeks, though you can follow the plan for up to 12 weeks depending on your goals and how much weight you have to lose.

Who is it for?

Major studies have shown that following an 800 calorie a day diet is much more effective than going “slow and steady”. A rapid weight loss plan, with typical weight loss of more than 10kg sustained over 12 months, is shown to achieve a high rate of type 2 diabetes remission.

The Very Fast 800 is inspired by these studies and their results. It is an intensive approach to weight loss, not suited to everybody. As with any diet, you should speak to your usual healthcare professional before commencing The Very Fast 800, and please see our medical disclaimer for information regarding cautions and exclusions. Alternatively, some people start with The New 5:2 or The Way of Life for gradual weight loss or to improve overall health.

How it works

1. Burning fat by flipping the metabolic switch

We all use two different types of fuel to function: glucose and fat. If you eat and snack regularly throughout the day, your body gets a continual source of glucose from food to fuel your muscles. Any excess (if you eat more calories than you burn off through exercise) is then stored as fat. However, when you spend some time fasting and lowering your intake carbohydrates, the glucose supply temporarily runs out, and your body has to switch to taking fat from your fat stores to burn as fuel. Scientists call this fuel transfer ‘flipping the metabolic switch’.

2. Improving insulin resistance by giving up snacking

Having high levels of sugar (from sweet, carby meals) consistently in your blood damages your arteries and nerves. Sugar in high concentrations is toxic to the cells.  

Insulin’s job is to regulate your blood sugar levels after you have eaten food. In a state of health, it pushes the sugar from your food into muscle cells to be burnt as fuel. If you are “insulin resistant”, your muscles find it hard to absorb this energy. Instead, it gets stored in your fat cells.

The trouble is, your body still craves fuel, so you continue to feel hungry and reaching for snacks. When you are insulin resistant, many of the calories you absorb get diverted into your fat cells. You put on weight and stay hungry.

How to do it

The Very Fast 800 requires following a fasting approach of 800 quality calories every day for a minimum of two and a maximum of twelve weeks. You’re encouraged to incorporate time-restricted eating (TRE), exercise and mindfulness to round out the benefits of The Fast 800 lifestyle. 

The low-carbohydrate, Mediterranean-style meal plans in our online programme are balanced for variety, nutrition, calories, protein and taste – designed to keep you fuller for longer to make this phase easily achievable. The online programme guides you through implementing these into your lifestyle with educational content, videos, guided meditations and a comprehensive exercise plan.

We recommend taking a multivitamin to safeguard your nutrition. The Fast 800 Multivitamins are specifically formulated for overweight or obese people looking to boost levels of essential micronutrients while losing weight, fast.

On days when cooking is not possible, The Fast 800 Shakes provide calorie-controlled convenience. High in protein, fibre and healthy fats, our shakes are low in sugar and made from all natural ingredients – they are designed with the principles of a Mediterranean diet in mind and fit in perfectly with The Very Fast 800.

The Evidence

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