
Medifast is a health and wellness company that offers weight loss plans. Its products are clinically proven and scientifically designed by physicians, dietitians and scientists. Medifast's plans are centred on 'Fuelings' – low-calorie, nutrient-dense meals, shakes, and snacks. The Medifast 5-1 plan is a low-calorie, reduced-carb diet that includes five small snacks and one full meal throughout the day. The plan discourages alcohol and includes one optional snack per day, which must be approved by a coach.
| Characteristics | Values |
|---|---|
| Diet Type | Low-calorie, reduced-carb |
| Meals | 5 small snacks and 1 full course meal throughout the day |
| Snacks | Bars, cookies, shakes, puddings, cereals, soups, and pastas |
| Calories | 800-1,000 calorie regimen |
| Weight Loss | 12 pounds over 12 weeks |
| Meal Plan | Lean & Green recipes with lean proteins and non-starchy vegetables |
| Alcohol | Strongly discouraged |
| Coaching | OPTAVIA Coach |
| Vitamins and Minerals | 24 vitamins and minerals |
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What You'll Learn

Medifast is a low-calorie, reduced-carb diet
The Medifast 5-1 plan discourages alcohol consumption and includes one optional snack per day, which must be approved by a coach. Approved snacks include 3 celery sticks, half a cup of sugar-free gelatin, or half an ounce of nuts. The plan also includes 'Lean and Green' meals, which are designed to be high in protein and low in carbohydrates. These meals offer 5-7 ounces of cooked lean protein, three servings of non-starchy vegetables, and up to two servings of healthy fats.
The Medifast weight loss plans combine pre-packaged fuelings with Lean & Green meal recipes, providing a structured approach to weight loss and maintenance. The plans involve eating six times a day to help manage hunger and stabilize blood sugar levels. Each plan includes a personal coach to provide guidance and support throughout the process.
Medifast has evolved into OPTAVIA, a holistic health and wellness brand that offers clinically proven plans and scientifically developed products. OPTAVIA's products, known as Fuelings, are formulated with 24 vitamins and minerals, high-quality complete protein, and probiotic cultures. The brand emphasizes incorporating healthy habits into one's lifestyle and provides support through Independent OPTAVIA Coaches to achieve meaningful weight loss.
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It includes small snacks and one full meal a day
Medifast is a low-calorie, reduced-carb diet designed to encourage weight loss. The Medifast 5-1 plan includes one full meal and five small snacks, also known as fuelings, throughout the day.
The full meal, known as the Lean and Green meal, is designed to be high in protein and low in carbs. It offers 5-7 ounces (150-200 grams) of cooked lean protein, 3 servings of non-starchy vegetables, and up to 2 servings of healthy fats. The Lean and Green meals provide recipes for healthy, low-fat natural meals, teaching dieters better cooking and eating habits, which are important for maintaining weight loss.
The five fuelings included in the Medifast 5-1 plan are also low in carbs but high in protein and probiotic cultures, which contain friendly bacteria that may boost gut health. These snacks come in various forms, including bars, cookies, shakes, puddings, cereals, soups, and pasta. Although they may seem high in carbs, fuelings are designed to be lower in carbs and sugar than traditional versions of the same foods, using sugar substitutes and small portion sizes.
The Medifast 5-1 plan is an 800-1,000 calorie regimen said to help dieters lose 12 pounds (5.4 kg) over 12 weeks. The plan also includes one optional snack per day, which must be approved by a coach. Approved snacks include 3 celery sticks, 1/2 cup (60 grams) of sugar-free gelatin, or 1/2 ounce (14 grams) of nuts.
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Medifast offers a weight-loss and maintenance plan
Medifast is a health and wellness company that has been in operation for nearly 40 years. The company has now transitioned to OPTAVIA, a holistic health and wellness brand. OPTAVIA offers structured weight-loss and maintenance plans centred on "Fuelings", which are low-calorie, nutrient-dense meals, shakes, and snacks. The weight-loss plans combine pre-packaged Fuelings with Lean & Green meal recipes that focus on lean proteins, non-starchy vegetables, and healthy fats. The maintenance plan includes more balanced meals alongside Fuelings.
The Medifast 5-1 Plan is a low-calorie, reduced-carb diet that includes five small Fueling snacks and one full course Lean & Green meal throughout the day. The Optimal Weight 5&1 Plan is an 800–1,000 calorie regimen said to help you lose 5.4 kg over 12 weeks. The plan includes optional snacks, which must be approved by a coach. The snacks can include celery sticks, sugar-free gelatin, or nuts.
The OPTAVIA plans are clinically proven and scientifically developed by physicians, dietitians, and scientists. The plans are designed to help people achieve optimal health and wellbeing. The company claims that its plans have impacted nearly 3 million lives. The plans include lessons in better eating and provide a solid framework to build upon as one moves from weight loss to weight maintenance.
The OPTAVIA recipes provide 5-7 ounces of cooked lean protein, 3 servings of non-starchy vegetables, and 0-2 servings of healthy fat. The plans involve eating six times a day to help manage hunger and stabilize blood sugar. Each plan includes a personal coach who provides guidance throughout the process. The coaches are often former clients themselves.
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The plan is centred on nutrient-dense meals, shakes, and snacks
Medifast is a low-calorie, reduced-carb diet designed to encourage weight loss. The plan is centred on nutrient-dense meals, shakes, and snacks, also known as 'Fuelings'. Fuelings comprise over 60 items that are low in carbohydrates and sugar but high in protein and probiotic cultures, which contain friendly bacteria that may boost your gut health. These foods include bars, cookies, shakes, puddings, cereals, soups, and pastas.
The Medifast 5-1 plan involves eating 6 times a day to help manage hunger and stabilise blood sugar. It includes 5 small snacks (Fuelings) and one full course meal throughout the day. The meal, known as a 'Lean and Green' meal, is designed to be high in protein and low in carbs. It offers 5–7 ounces (150–200 grams) of cooked lean protein, 3 servings of non-starchy vegetables, and up to 2 servings of healthy fats. Alcohol is strongly discouraged on this plan, and an optional snack per day can be included, but it must be approved by your coach.
OPTAVIA, Medifast's sister company, offers a similar plan with structured weight-loss and maintenance plans centred on Fuelings. The weight-loss plans combine pre-packaged Fuelings with Lean & Green meal recipes, while the maintenance plan includes more balanced meals alongside Fuelings. OPTAVIA's products, like Medifast's Fuelings, are formulated with 24 vitamins and minerals, high-quality, complete protein, and probiotic cultures.
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The Medifast 5-1 Plan discourages alcohol
Medifast is a low-calorie, reduced-carb diet designed to encourage weight loss. The Medifast 5-1 Plan, also known as the Optimal Weight 5&1 Plan, involves eating five small snacks, or "fuelings", and one full meal throughout the day. The plan is designed to move the body into a "gentle but efficient fat-burning state while retaining lean muscle mass".
Alcohol can also impair judgement and lower inhibitions, which can lead to poor food choices and decreased willpower when it comes to sticking to a healthy diet. For those on the Medifast 5-1 Plan, consuming alcohol can make it more difficult to adhere to the strict calorie and carb limits of the plan.
Furthermore, alcohol can affect the digestive system and slow down metabolism, which can impact the body's ability to process and absorb nutrients from the Medifast meals. This can reduce the effectiveness of the plan and potentially lead to nutritional deficiencies.
It is important to note that while alcohol is discouraged, the Medifast 5-1 Plan does not explicitly prohibit it. However, those following the plan are advised to limit their alcohol intake as much as possible to maximise their chances of success.
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Frequently asked questions
Medifast is a low-calorie, reduced-carb diet to encourage weight loss. The Medifast 5-1 plan includes five small snacks, also known as fuelings, and one full meal throughout the day. The main goal is to incorporate healthy habits into one's lifestyle.
Fuelings comprise over 60 items that are low in carbs but high in protein and probiotic cultures. These include bars, cookies, shakes, puddings, cereals, soups, and pastas.
The main meal in the Medifast 5-1 plan is called a Lean and Green meal. It is designed to be high in protein and low in carbs. It offers 5-7 ounces of cooked lean protein, 3 servings of non-starchy vegetables, and up to 2 servings of healthy fats.











































