Understanding the Principles of Eating on The Fast 800
The Fast 800, created by Dr. Michael Mosley, is more than a simple calorie-counting regimen; it's a nutritionally balanced, Mediterranean-inspired approach to dieting. The plan has different phases, including an intensive 800-calorie-per-day stage and a more flexible 5:2 intermittent fasting stage. The core principle remains consistent: focusing on high-quality, whole foods rather than processed junk, even while limiting calories. This strategy helps shift your body into a state of mild ketosis, which can accelerate fat burning and suppress hunger. By emphasizing a diet rich in protein, healthy fats, and fiber, you can maximize nutrient intake and feel satisfied despite the calorie restriction.
What to Prioritize: The Fast 800 Food List
Lean Proteins
High-quality protein is vital on the Fast 800 because it keeps you feeling full for longer and helps preserve muscle mass during weight loss.
- Oily Fish: Salmon, mackerel, sardines. Rich in protein and healthy fats.
- Poultry: Chicken and turkey breast. Excellent lean protein sources.
- Eggs: Poached, boiled, or scrambled. A staple breakfast that increases satiety.
- Legumes: Lentils, chickpeas, and beans. Great for protein and fiber.
- Tofu: A versatile plant-based protein.
Healthy Fats
Healthy fats are crucial for satiety, energy, and overall metabolic health.
- Extra Virgin Olive Oil: Use for cooking and salad dressings. Contains anti-inflammatory compounds.
- Avocados: A fantastic source of healthy fats that keeps you feeling full.
- Nuts and Seeds: Almonds, walnuts, chia seeds, and flaxseeds. Offer protein, fiber, and micronutrients.
- Full-Fat Dairy: Plain Greek yogurt is encouraged, as full-fat products can be more satiating than low-fat alternatives.
Low-Carbohydrate Vegetables
Non-starchy vegetables can be consumed in large quantities without significantly impacting your calorie count, providing essential fiber, vitamins, and minerals.
- Leafy Greens: Spinach, kale, rocket.
- Cruciferous Vegetables: Broccoli, cauliflower, Brussels sprouts.
- Other Veggies: Mushrooms, zucchini, bell peppers, asparagus.
Low-Sugar Fruits
When you need something sweet, focus on fruits with a lower sugar content.
- Berries: Strawberries, blueberries, raspberries.
- Apples and Pears: Enjoy these in moderation.
Foods and Drinks to Avoid
To maximize the benefits of the Fast 800, it is equally important to know what to cut back on or eliminate.
- Sugar and Refined Carbohydrates: This includes sugary drinks, sweets, white bread, white pasta, and pastries, which cause blood sugar spikes.
- Processed Foods: Processed meats, frozen meals, and pre-packaged snacks should be avoided.
- Low-Fat Products: These are often higher in sugar to compensate for flavor and are less satiating. Opt for full-fat options in smaller quantities.
- Sweet Fruits: Minimize or avoid tropical fruits like mango, pineapple, and melon due to their higher sugar content.
- Snacking: Snacking can trigger insulin spikes and increase hunger. The diet is designed around meals to promote longer fasting periods.
- Alcohol: Avoid alcohol as it contains empty calories and can disrupt the diet's benefits.
Example of a Fasting Day Meal Plan
Here is a sample day to illustrate how to combine these food groups to stay within the 800-calorie limit:
- Breakfast (approx. 200 cals): Scrambled eggs with spinach and mushrooms.
- Lunch (approx. 350 cals): Grilled chicken breast served with a large mixed salad of leafy greens, cucumber, cherry tomatoes, and a simple extra virgin olive oil and lemon dressing.
- Dinner (approx. 250 cals): Baked salmon with steamed broccoli and asparagus.
Fast 800 vs. Standard Western Diet: A Comparison
| Feature | Fast 800 Diet | Standard Western Diet | 
|---|---|---|
| Carbohydrates | Moderately low-carb; focuses on high-fiber whole grains (e.g., quinoa, bulgur) in moderation and non-starchy vegetables. | High in refined and starchy carbohydrates like white bread, pasta, and sugary items. | 
| Fats | Emphasizes healthy, high-quality fats like extra virgin olive oil, avocado, nuts, and full-fat dairy. | Often high in unhealthy saturated and trans fats found in processed and fried foods. | 
| Protein | Focuses on high-quality, lean protein from fish, poultry, eggs, and legumes to promote satiety. | Often includes processed meats and may lack sufficient high-quality protein. | 
| Processed Foods | Strictly minimizes or avoids processed foods, added sugars, and sugary drinks. | Frequently includes high amounts of processed foods, snacks, and sweetened beverages. | 
| Calorie Intake | Uses 800-calorie days in different formats (intensive or 5:2) to promote rapid weight loss. | Typically does not have a structured calorie restriction; intake can be high and unbalanced. | 
Staying Hydrated is Crucial
Proper hydration is essential for managing hunger and supporting your metabolism during the diet. Water should be your primary beverage. Unsweetened herbal teas and black coffee are also excellent options and can help with cravings. Avoiding sugary drinks and excessive caffeine is key to maintaining stable energy levels.
Conclusion
The Fast 800 diet is built on the principles of a low-carb, Mediterranean-style eating pattern, focusing on nutrient-dense foods to achieve rapid weight loss and improve metabolic health. By prioritizing lean proteins, healthy fats, fiber-rich vegetables, and low-sugar fruits, you can control hunger and remain satisfied on days of calorie restriction. While the emphasis is on whole foods, the plan explicitly advises against processed foods, sugary drinks, and refined carbohydrates. As with any significant dietary change, it is highly recommended to consult a healthcare professional before beginning the Fast 800 program. Following the diet's guidelines can set you on a path toward healthier eating and sustained weight management, transitioning from a short-term plan to a long-term lifestyle.
For more information on the Fast 800 approach and recipes, you may visit the official Fast 800 website. The Fast 800