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The Fast 800 Diet- What Is It And Does It Work?

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What is The Fast 800 Diet | Is the Fast 800 Diet Healthy | Is Fasting 800 Good for Weight Loss | Is Fasting 800 for the Long Run | Who is Fast 800 Not For

In recent years, the term “fasting” has become increasingly popular among those seeking to lose weight, improve their health, and boost their longevity. One of the most recent and much-talked-about approaches to fasting is the Fast 800 diet, based on a combination of intermittent fasting and a low-carb, Mediterranean-style eating plan. 

The revolutionary fasting 800 diet has taken the health and fitness world by storm, promising rapid weight loss and various other health benefits. But what exactly is the Fast 800 diet, and is it right for you?

This article will take a closer look at the science behind the Fast 800 diet and explore its potential benefits and drawbacks. Whether you are a seasoned dieter or simply curious about new approaches to health and fitness, the Fast 800 diet is worth investigating. 

The Fast 800 Diet

What is The Fast 800 Diet?

Dr. Michael Mosley formulated the Fast 800 diet, which claims to reduce your risk of type 2 diabetes, cancer, and heart disease. This diet is for those looking to reduce their weight, especially losing abdominal fat, and those with issues with blood sugar. 

The Fast 800 diet will cut your calorie intake to 800 calories daily for the first two weeks of the regime. The 800 calorie intake per day is recommended for at least two weeks and not more than 12 weeks. Your meals with the fast 800 plan will be Mediterranean styled, low in carbs, and have many vegetables and lean protein sources. If you are not cooking on a particular day, you can opt for meal replacement shakes high in fiber, protein, and healthy fats. 

Fast 800 Stage 1

Stage 1 of the Fast 800 plan will see you sticking to 800 calories a day for a minimum of 2 weeks and not more than 12 weeks. This will induce ketosis in your body, a process where your body will switch from burning glucose for energy to burning fat. This stage is the most intensive part of the plan and is not suited for everybody as it can be highly demanding on the body. If this approach does not work for you, skip to stage 2. 

While following the Fast 800 plan, you are advised to stick to a Mediterranean diet, which is probably the healthiest diet on the planet, rich in lean protein, healthy fats, and fiber. Experts say that if you follow an 800-calorie diet, you must ensure that it is nutritionally adequate. Stress is laid on the fact that Stage 1 should not last for more than 12 weeks. 

Fast 800 Stage 2

At the end of stage 1, you will see significant weight loss. At this point, you are to transition to stage 2, where you will follow a 5/2 diet plan, eating 800 calories on two non -consecutive days of the week and a regular diet on the other five days. It is important to note that you will get the best results from fasting 800 if you follow a Mediterranean diet that is big on portion control. 

During this phase, avoid processed food and stick to home-cooked food. Go for fruits, vegetables, beans, whole grains, extra fiber, lentils, plenty of nuts, and a lot of oily fish and full-fat dairy products. Avoid or reduce sugar, say no to starchy carbs, and consume 40-50 grams of good-quality protein daily. 

Stage 2 of the Fast 800 diet is essential because, on your two fast days, your body will enter ketosis, just like it would if you had followed any other intense weight loss program. With the 5/2 approach in stage 2, you will shed fat and achieve a better insulin response. This will make it easier for you to stick to regular-sized portions of food during the week. 

In stage 2, you will enjoy other fasting benefits like autophagy, tissue regeneration, reduced cancer risk, reduced sleep apnea, increased metabolism, and decreased inflammation. It also helps reduce the risk of metabolic syndrome in obese people.

Fast 800 Stage 3

At this stage, you have achieved your goal, so your focus will be on maintaining this state. Ensure you continue eating sensible portions of low-carb, Mediterranean-style food daily and stick to a low-sugar diet. 

Many people harbor the notion that the Mediterranean diet is predominantly pasta and pizza. However, on the contrary, it is packed chock-a-bloc with vegetables, fruits, nuts, healthy fats, fish, and olive oil. All of these foods are good for you and are proven to prevent cardiovascular diseases, dementia, and heart disease, as well as possibly reversing Type 2 diabetes. 

The Fast 800 Diet

What Does 800 Calories Look Like?

Imagine you have a plate of food. About 800 calories could look like a medium-sized burger with cheese and some fries, or a big salad with chicken and dressing. It’s a rough measure of how much energy you’d get from eating that food. But remember, different foods have different amounts of calories, so 800 calories can look different depending on what you’re eating.

Is the Fast 800 Diet Healthy?

The question of whether a fast800 diet will help you will depend on your circumstances. One of the primary goals of Fast 800 is to reduce abdominal fat. Abdominal fat puts people at risk of different lifestyle diseases, primarily type 2 diabetes. 

The first stage of the Fast 800 diet has a working premise that when you eat refined and “white” carbs like pasta, rice, or white bread. These can be easily broken down in your gut to release sugar in the form of glucose, which will lead to insulin resistance and fat accumulation over a while. The 1st stage of the diet aims to normalize pancreas and liver fat, promote insulin response, and manage blood glucose

However, if you are thinking of practicing the Fast 800 diet, know that this stage of rapid weight loss can be intense and may have a profound impact on your blood sugar levels. Hence, if you are taking medication for diabetes or insulin shots, discuss this plan with your doctor to see if it is right for you. 

There may also be side effects like constipation, tiredness, and headaches. The culprit is dehydration, so ensure that you take 2-3 liters of calorie-free drinks every day of the plan. During the first stage of the plan, if you do not go with a meal replacement product, you may lack in micronutrients and may need a mineral and vitamin supplement. Shakes, a common form of a meal replacement product, are made to stave off hunger pangs, so you may need them too. 

Is Fasting 800 Good for Weight Loss?

Eating 800 calories a day is considered VLCD (Very Low Calorie Diet), and it can lead to you experiencing rapid weight loss. However, it is not for everybody and is not recommended as a matter of routine. Typically, it will aid you if you have an obesity-related complication. According to doctors, for most people to lose weight sustainably and safely, the calorie intake should be 1900 calories for men and 1400 calories for women. 

Dr. Mosley, the founder of the Fast 800 diet, has claimed that if you follow the rapid weight loss Fast 800 plan, you can lose up to 14 kilos over eight weeks. It also depends on your starting weight and how much you want to lose. It also assumes that you remain committed and motivated through the Fast 800 diet stages. The plan’s second stage is more sustainable and will result in slower weight loss. 

The Fast 800 Diet

Is Fasting 800 for the Long Run?

Doctors suggest that when you follow a VLCD, it should not be continued for more than 12 weeks. Additionally, it should be under the guidance of a proper healthcare professional. If you are following the “real food” version of the Fast 800 plan, your intake of nutrients and consequent energy will be low. For this purpose, you can have meal replacement shakes fortified with protein, fats, vitamins, and minerals. However, it is recommended that they be used only in the short term.

We should also remember that no Fast 800 medical trials have been done, so its efficacy is not medically proven. 

Who is Fast 800 Not For?

We advise you to consult your doctor or general practitioner before starting the Fast 800 diet. Discussing with your doctor is especially recommended for people under the age of 18, older adults, and those with pre-existing medical conditions. This includes those on medication and who have type 2 diabetes. Also, consult your GP if you take warfarin, are on blood pressure medication, are pregnant, are undergoing infertility treatment, or are breastfeeding


Fast 800 is a revolutionary diet plan that has been shown to provide numerous health benefits. It helps people lose weight and reduces the risk of chronic diseases like diabetes, heart disease, and cancer. 

The combination of intermittent fasting and a Mediterranean-style diet is a powerful tool that can help people live longer, healthier lives. With the Fast 800 diet, you can enjoy delicious and satisfying meals while still achieving your weight loss goals. So why not give it a try and start your journey toward better health and wellness today?

Also need help fasting? Check out the Best Intermittent Fasting Mobile Apps we recommend to help you on your journey.

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