Best Diet & Weight Loss 2023

Join the countless satisfied shoppers who turn to to make smart buying decisions. Our experts tested and compared top diet & weight loss plans, and combed through research, reviews and pricing to compile our list of the best diet & weight loss plans of the year.

Last Updated September 2023

Healthy eating, exercising, weight and blood pressure control
Top Pick


14,852   people visited this week

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  • Lose up to 9 lbs your first two weeks
  • Pre-portioned meals & snacks delivered to you
  • Fully customizable menu for all tastes & preferences
  • Free tracking app & on-demand weight loss coaching
  • Affordable two-week payment plans
  • 7 day money back guarantee
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    Summer Sale!
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    12,186   people visited this week

    14 Day Free Trial

    • App-based weight loss program rooted in psychology
    • Guides behavioral change for sustained weight loss
    • Personalized healthy weight & diabetes programs
    • Dedicated virtual support group
    • Includes pedometer & health log
    • Free trial & cancel your subscription anytime
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      14 Day Free Trial



      1,083   people visited this week

      Try Now!

      • Personalized meal plans
      • 10,000+ Quick-to-prepare recipes
      • Comes with a list of inexpensive ingredients that can be found at the local grocery store
      • App for daily tracking and many other features
      • Vegetarian options
      • Stay on a diet for full 28 days and get a full refund
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        1,191   people visited this week

        Get 18 Free Meals + First Box Ships Free + 3 Surprise Gifts

        • Skipping weeks or cancelling is super easy
        • Easy-to-follow recipes with clear nutritional info
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        • High-quality ingredients sourced straight from the farm
        • Innovative packaging designed to reduce waste
        • Delivers anywhere in the U.S. other than Hawaii and Alaska
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          Get 18 Free Meals + First Box Ships Free + 3 Surprise Gifts



          602   people visited this week

          Save up to 75%!

          • Created by professional nutritionists
          • Personalized weight management plans and different fasting modes
          • Easy-to-use fasting tracker and tools for successful weight loss
          • Healthy BMI range, improved digestive system, and overall health
          • 5000+ recipes, educational articles, workout routines
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            3,702   people visited this week

            Up to 65% Off

            • Relieve constipation
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            • Accelerate weight loss
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            • Boost your digestive system
            • Feel lighter in as little as 3 days
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              Up to 65% Off



              988   people visited this week

              Special Offer!
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              • Science-based nutrition plan
              • 12,000 recipes for healthier meal inspiration
              • 200+ no-track ZeroPoint® foods
              • Coach-led Workshops, in-person and virtual
              • Barcode scanner and restaurant search
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                Special Offer!
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                552   people visited this week

                Save up to 50%!

                • Includes +1000 easy-to-make recipes
                • 5 recipes per day which include shopping list
                • Quick 60s quiz to get personalized plan
                • More than 65,000 happy clients from 50+ countries
                • Personalized workout plan
                • Tracks & Counts everything you eat
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                  Save up to 50%!



                  511   people visited this week

                  $120 Off Across Your First 6 Boxes!

                  • Over 25 unique chef-selected meals rotating weekly
                  • Dietitian Approved Meals
                  • Choose from a variety of fully prepared meal plans
                  • Delivers everywhere in the United States including Alaska and Hawaii
                  • You can skip weeks or update your plan anytime
                  • Paleo, Keto, Vegetarian, and Vegan options available
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                    $120 Off Across Your First 6 Boxes!



                    393   people visited this week

                    Get over 25% Off First Month

                    • Lose up to 15% body weight with doctor-prescribed GLP-1s
                    • Personal health coaching via video chats and messaging
                    • Metabolic Test to learn about your body
                    • Smart scale for progress tracking
                    • Personalized weight loss plan
                    • Insurance coverage support for medication
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                      Get over 25% Off First Month



                      392   people visited this week

                      Win Up To $10,000 In Cash Prizes!

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                      • Weekly weigh-ins & support from contestants help you stay on track
                      • Featured on CNN, New York Times, Shape, & More
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                        Win Up To $10,000 In Cash Prizes!



                        376   people visited this week

                        7-Day Free Trial
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                        • First wellness app designed specifically for adults 50+
                        • On average members lose ~15 lbs in their first 3 months
                        • Each member is given a dedicated health coach
                        • Evidence-backed developed by a research team of top doctors
                        • Personalized fitness and nutrition plans
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                          How We Determined the Best Diet Plans of 2023

                          Anyone who’s ever tried to lose weight on their own knows: It’s no walk in the park. But with so many diet companies claiming to have cracked the code on weight loss, choosing the best diet plan can feel even harder.

                          The truth is, there is no miracle one-size-fits-all weight loss plan, and the best diet plan for weight loss is the one you can actually stick with. That means it’s important to decide what you value most in a diet plan, and base your selection on that.

                          To help you decide what diet plan is best for you, we’ve broken down some of the top criteria you probably care about most.

                          Our criteria for determining the best diet and weight loss plans:

                          Diet Food

                          One of the first considerations when you’re shopping for the best diet plan for weight loss is whether you prefer food to be provided to you or you just want guidance in preparing your own healthy meals. This is a big differentiator between many of the diet plans on the market. Some, like Nutrisystem, will deliver pre-portioned, nutritionally balanced meals to your door—so all you have to do is eat the food and you’ll lose weight. These diet plans are great for those who are too busy to worry about preparing meals, and those who need help familiarizing themselves with what proper portions and balanced meals look like.

                          Other diet plans, like Noom, provide you with the resources and guidance you need to plan your own healthy meals. Options like these focus on empowering you to make healthy decisions on your own, a skill that will ensure long-term success. These types of diet plans are great for those who have the time to shop for groceries and prepare their own recipes.

                          If you opt for a diet plan that does include food, you’ll want to read the details about just how many meals and snacks are included. In the case of Nutrisystem, you can choose from a few different plans, and each comes with different quantities of food. Not only that, make sure you understand if you’ll need to supplement your diet plan. Some weight loss programs will provide your meals and snacks, but will require that you add in fresh fruits and vegetables.

                          You’ll also want to take a look at the menu to decide if there is a wide enough selection for your taste. Critics of some food delivery companies say there isn’t enough variety to keep them interested or excited, which can lead to non-compliance. Some companies, like Nutrisystem, offer tiered programs, with the lowest tier including a limited menu or a preset meal plan, and the highest tier including customizable menus and access to all meals and snacks on the menu.

                          And don’t forget to look into what type of food you’re getting. If the meals are frozen, you’ll need to consider if you have enough space to store them. If they’re shelf stable, make sure you have room in your pantry. It’s also important to understand just how many meals and snacks you’re getting, and what you’ll need in order to store and prepare them.

                          If you follow a special diet, and want a plant-based diet plan, a keto diet meal plan, a mediterranean diet meal plan, a diabetic diet plan or a low carb diet plan, you’ll want to be sure these are options.

                          Diet Food Delivery

                          If you do opt for a diet plan that includes food, you’ll want to decide what delivery cadence makes sense for you. Some plans, like Diet-to-Go will deliver your food weekly. Others, like Nutrisystem, will deliver your food monthly.

                          You’ll also want to check if you have to pay extra for shipping.

                          Diet Plan Price

                          Obviously, diet plans that include food will cost you more than those that don’t. But how much should you spend? We suggest doing the math. Take the average you spend on food for yourself each week and compare it to what the diet plan will cost you per week. Make sure you check if the diet plan you are considering requires you to add any extra food and factor that into your cost calculation as well.

                          Weight Loss Support

                          This is an area that differs greatly across the various diet plans on the market, so we’ve broken down some of the ways brands provide support while you lose weight:

                          Weight Loss Experts

                          Health coaches, dietitians, nutritionists, weight loss counselors, fitness gurus… these are just some of the expert personnel at your disposal, depending upon the diet plan you select. Having access to these experts can be extremely beneficial whether you have questions about navigating your weight loss program or you just need help deciding what to eat when dining out.

                          If you choose a diet plan that does not include food, these experts can be invaluable resources since they can help you decide what to eat, and provide nutritional education that will last you a lifetime.


                          Some weight loss companies enable members to interact through dedicated online forums and chat rooms, which can be very helpful for those who don’t want to feel like they’re going at it alone.

                          Digital Support

                          Acknowledging that we live in a digital world, many weight loss companies now offer apps and online resources designed to provide support from your first day on your diet plan to your last.

                          Companies like Noom are primarily app-based, while companies like Nutrisystem provide a companion app that enables you to track your food and water intake, your exercise, and your weight, and includes expert weight loss tips, recipes and exclusive offers on program upgrades.

                          If you’re leaning toward an app-heavy diet plan, consider if you have the technology to support these apps, and if your lifestyle is conducive to always having a smartphone or tablet on hand.

                          Weight Loss

                          While the amount of weight you will lose on a diet plan depends on a number of factors, including your starting weight, your gender, your activity level, etc., most experts recommend a steady weight loss of one to two pounds per week, since studies suggest that those who lose weight gradually and steadily are more successful at keeping it off.

                          When you’re shopping for a healthy diet plan for weight loss, you’ll want to keep this in mind. Companies that force you to follow an 800 calorie diet plan, or promise that you’ll lose weight fast—like 20 pounds in a few days, are not only unhealthy, they’re not sustainable. Opt for a weight loss program that promises steady weight loss, and you’ll set yourself up for long-term success.

                          Take a look at weight loss success stories and weight loss before and afters to get a sense of the results you can expect from each brand. Some brands even provide that information outright—Nutrisystem is very transparent, claiming that you can expect to lose one to two pounds per week following their diet plan.

                          Diet Plan FAQs

                          Although there’s no one-size-fits all weight loss plan, ultimately, a good diet plan is one that enables you to reach your weight loss goals in a sustainable way, without depriving you of the nutrients your body needs.

                          A good diet plan, for instance, won’t eliminate entire food groups or macronutrients (think protein, fats and carbs), and won’t cut so many calories that you feel like you’re constantly at risk of either passing out or plunging head-first into the pantry in a “moment of weakness.” Instead, a good diet plan will include a balance of macronutrients, and encourage a variety of foods to ensure that all of your micronutrient (a fancy word for vitamins and minerals) are met. A diet rich in vegetables and fruits, lean proteins, healthy fats and complex, fiber-rich carbs can deliver all the nutrients you need without piling on the pounds. And by keeping processed foods that are high in sodium, sugar, fat and calories to a minimum, a good diet plan will be an investment in your health as much as it is a means to weight loss.

                          Of course, there are other considerations when choosing a diet plan. Price, convenience, meal delivery, trial periods, cancellation policies—these are all factors you should think about. It’s worth putting some thought into which of these aspects matter most to you before committing to a plan.

                          Once you’ve decided what’s most important to you, take a look at our list of top rated diet plans to choose a good diet plan for you. We’ve included meal delivery diet plans for those who like the convenience of having prepared meals and snacks delivered to their door, and DIY diet plans like Noom, which provide guidance for preparing your own meals. We deliberately chose a variety because ultimately, choosing a good diet plan is personal—and the best diet plan will always be the one you will stick to.

                          It’s possible to lose 10 pounds in one week if your starting weight is high enough and you deprive yourself enough. But the research suggests that people who lose weight gradually and steadily (about one to two pounds a week) are more successful at keeping it off. So, be wary of any weight loss plan that claims to be a “diet plan to lose weight fast,” and instead choose a meal plan for weight loss that promises steady results and teaches healthy habits to keep the weight off for good.

                          While exercise can certainly help speed up your weight loss, improve your muscle tone and even in some cases, give your metabolism a boost, studies suggest that physical activity alone isn’t as effective as following a weight loss diet. For optimal results (and health!) pair your diet plan with a mix of both cardio and resistance training.


                          The Consumer Rating Difference

                          Behind Our Best Diet Plan Ratings

                          We make choosing the best diet plan easy with expert reviews and rankings.

                          Here’s the methodology behind our ratings:


                          Exhaustive Research

                          Our team of experts looks at all the latest weight loss research and data to ensure our best diet plan recommendations are backed by sound science.

                          Diet Plan Reviews

                          We combed through hundreds of consumer forums and customer reviews to find out which diet plans real people like best.

                          Personal Experience

                          Our nutrition and weight loss experts personally tested the best diet plans, keeping in mind the criteria consumers care about most—like convenience and food flavor.

                          Side by Side Comparisons

                          From Nutrisystem to Noom to Diet-to-Go, we compare the best diet plans across a number of key criteria to determine how each one ranks.