By allowing a daily intake of 1,200 to 1,600 calories, broken into a ratio of 50% carbs, 25% protein, and 25% fat (except for the low-carb plan), Diet-to-Go’s portions achieve a caloric middle ground that provides you with energy and the feeling of fullness while still being low enough to allow for slow-but-steady weight loss. In short, you’ll shed 1 to 3 pounds per week without feeling “hangry” all the time.

After thoroughly researching the most popular and expert-recommended diet plans, we determined that all the diet plans to be included in our "Best of" list should meet the criteria stated below. However, there is one very important factor that, though essential to a person’s decision on whether or not to begin a diet, we could not review first hand: that factor is taste. 


If you're not up for crunching numbers every day, you can take a more generalized approach. “For some people, it’s knowing, ‘Typically I eat a whole sandwich,’” says Gagliardi. “Now, I’m going to eat half a sandwich at lunch and save the other half for my dinner and cut my calories in half." To get started, consider these 25 ways to cut 500 calories a day.
This approach is very user-friendly, mainly because it does not prohibit any foods and, as long as you keep your daily caloric intake below your individual threshold, you’ll lose weight. Noom claims 84% of its customers completed the plan, most of them losing 1 to 2 pounds per week. After reading hundreds of customer reviews, we believe this claim to be pretty accurate.
Be choosy about carbs. You can decide which ones you eat, and how much. Look for those that are low on the glycemic index (for instance, asparagus is lower on the glycemic index than a potato) or lower in carbs per serving than others. Whole grains are better choices than processed items, because processing removes key nutrients such as fiber, iron, and B vitamins. They may be added back, such as in “enriched” bread.
"Oolong, or 'black dragon,' is a kind of Chinese tea that's packed with catechins, nutrients that help promote weight loss by boosting your body's ability to metabolize fat. A study in the Chinese Journal of Integrative Medicine found that participants who regularly sipped oolong tea lost a pound a week, without doing anything else to change their diet or exercise habits." — Kelly Choi, author of The 7-Day Flat-Belly Tea Cleanse
To avoid feeling hungry after a workout, eat a snack with at least 12 grams of protein before exercising, says Dr. Cheskin. And if you’re still hungry afterward? First, check in with yourself and make sure it’s actual hunger and not dehydration, says Dr. Cheskin. Then, eat a protein-rich snack that also includes some carbs, like a protein bar with whole grains.
At a recent reality show Aap Ki Adalat, a lady in the audience asked Salman Khan the secret of his six pack abs, so that she could get her husband to lose weight. Salman said, “Get him in a job which requires him to take off his shirt in public.” In other words, Salman was referring to the need of his job as a movie star to have the perfect body. That’s his motivation. That’s his need. What’s your motivation? Do you have a need to have lean body and flat belly? Find a strong need to lose weight.
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Variety: Nobody wants to eat the same thing day in and day out. That's why a variety of food items is essential for a diet plan to be sustainable. Also, variety as a criterion for determining the best diet plans refers not only to food items but also to groups of people. For example: Is the diet plan available to diabetics? Men? Women? People with allergies or special conditions?

To prep his patients for success, Dr. Seltzer tells them to plan around a large evening meal by eating a lighter breakfast and lunch—NBD since most people who eat a meal before bed tend to wake up feeling relatively full, he says. Research suggests balanced bedtime meals may also promote steady next-day blood sugar levels, which also helps with appetite regulation.


The idea is that the fasting induces mild stress to the cells in your body, helping them become better at coping with such stress and possibly helping your body grow stronger. The verdict is still out regarding the diet’s long-term effectiveness with weight loss, according to a review of preliminary animal research published in January 2017 in Behavioral Sciences. (17)

Research also finds that drinking frequently—even if it’s a moderate amount—can set you up for excess pudge. Not only do the beverages themselves contain unnecessary calories, but once you start sipping too much, your inhibition also plummets, according to one 2016 study. The result? You’ll have a hard time resisting that late-night slice of pizza. So if you're going to imbibe, be sure to stick to one drink per day for women and up to two drinks for men.
Variety: Nobody wants to eat the same thing day in and day out. That's why a variety of food items is essential for a diet plan to be sustainable. Also, variety as a criterion for determining the best diet plans refers not only to food items but also to groups of people. For example: Is the diet plan available to diabetics? Men? Women? People with allergies or special conditions?
When it comes to all things weight loss, the simplest, fastest way to make impactful, lasting change is to form habits you can actually stick with for life. That’s why this plan involves an easy-to-follow meal planning guide. This full week of (delicious!) food will take the guesswork out of grocery shopping and prepping with nutritionist-approved breakfast, lunch, and dinner ideas. If you have a higher activity level, check out these 1,300-, 1,400-, 1,500-, and 1,800-calorie meal plans as well.
A relatively new offering, the Nutritarian diet is based on maximizing the amount of healthy vitamins, minerals, and trace nutrients in your food, balancing your hormones, and avoiding toxins. The plan—created by Joel Fuhrman, M.D., author of The End of Dieting—is nutrient-dense, plant-rich, and includes anti-cancer superfoods to help you not just lose weight but live a long, disease-free life. (P.S. Follow these guidelines to make sure you're absorbing all the nutrients from your food.)

"Keep track; whether that's every day, week or two to make sure you're on track and if not go back over your plan of action and tweak it; nothing's set in stone and it has to work for you not someone else! If it's not working, reassess other alternatives that do. There are many routes to the same destination. This doesn't mean giving up on your goals, it means finding new ways to achieve them that works for you." — Eve Dawes, Certified Personal Trainer, NASM, founder of Fitness By Eve.
Take cauliflower gnocchi to the next level with these hearty, plant-based meal-prep bowls. Here we double up our Roasted Butternut Squash & Root Vegetables recipe (see Associated Recipes) and combine it with white beans, pesto and store-bought cauliflower gnocchi to make a week of healthy meal-prep lunches. You'll have leftover roasted veggies, so plan to use them as easy side dishes for dinner throughout the week or incorporate them into another recipe, like Creamy Roasted Vegetable Soup with Chicken or the Piled-High Greek Vegetable Pitas (see Associated Recipes).
"A study by David Jenkins, MD, PhD—the University of Toronto pioneer in low-glycemic eating — demonstrates that eating small portions at frequent intervals is good for your health in a number of remarkable ways. Within the study, they found that people who ate every three hours reduced their blood cholesterol by over 15% and their blood insulin by almost 28%. That's key, because in addition to regulating your blood sugar level, insulin plays a pivotal role in fat metabolism, inflammation and the progression to metabolic syndrome. When your body produces less insulin, you're much less likely to convert dietary calories into body fat.
When we began our research on Nutrisystem, the first thing that stood out to us was the variety of  plans they offer. In total, there are nine different options, including plans for diabetics, vegetarians, and even special diets for men (a rarity in the diet industry). Also, most of their plans are highly customizable, so if you don’t like their recommendations you can customize your meal plan from chef-created menu items including staples like chicken masala, cheesesteak pizza, muffins, burgers, popcorn, and lots more.

This diet theory, consisting of 10% or less of daily calories from fat, is the flip-side to Atkins, Keto, and Paleo. Proponents of the ultra-low-fat approach adhere to a diet rich in plant foods, low in animal products, and high in carbohydrates (80% or more of daily caloric intake). An example of this type of theory is the TLC (Therapeutic Lifestyle Changes) Diet created by the National Heart, Lung, and Blood Association with the purpose of helping people combat heart disease, lower cholesterol levels, and prevent digestive problems.
"In order to increase your resting metabolic rate, it is the consistency of exercise that is crucial and not the intensity or duration. Focus on consistent, quality movement (walk, bike, climb, paddle board, etc.) every day, rather than embracing the weekend warrior mentality." — Timothy Lyman, ACE certified personal trainer and Director of Training Programs at Fleet Feet Pittsburgh
While there are many vegetarian factions, all of them share the same basic dicta: no fish, meat, or poultry. But that’s where the similarities end for this eating plan/lifestyle practiced by 18% of the world population. Studies suggest that a vegetarian diet is good for reducing cancer risks, stabilizing blood sugar, and promoting heart health, while others raise a flag regarding nutritional deficiencies including Omega 3, vitamin B, calcium, and iron. Plans range from the most flexible to the most restrictive. Here are two of the most popular examples of each extreme:
If you want to lose fat, you have to eat fat...the right kind, that is. Adding healthy fats, in the form of monounsaturated and polyunsaturated fats, can help you feel more satisfied with your meals. Yasi Ansari, MS, RD, CSSD, national medial spokesperson for the Academy of Nutrition and Dietetics, says, "Fat sources that I recommend boosting in the diet come from unsaturated fatty acids found in foods like olive oil, nuts, avocados, fatty fish, and eggs, as they can help increase satiety while providing a variety of health benefits when consumed in moderation." You can increase your intake of healthy fats by adding some chopped avocado into your salads, enjoying wild salmon twice a week, and having a little peanut butter with your post-workout snack or smoothie. Just remember to enjoy them in moderation as they're still very calorie-dense, Ansari says.
To lose 10 pounds fast, Jackson explains you'll then want to cut your calorie consumption by 10%. "For example, if you average 2,000 per week, reduce that amount to 1,800 calories and see if you lose weight. You'll also want to take notice of the percentage breakdown of protein, carbs and fat. Aim for a 'bodybuilder breakdown' which is 40% protein, 40% carbs and 20% fat. You'll begin to drop weight in no time!"
The researchers hypothesize that participants who abstained from animal products dropped significantly more pounds since plant-based foods include loads of filling fiber and slow-to-digest complex carbs. Though more research is needed to confirm these results, the study authors write, "Vegetarian diets appeared to have significant benefits on weight reduction compared to non-vegetarian diets."
"If a client has come to me looking to lose 10 pounds, I would tell them to simply move. Move more, and more often. Walk or bike ride to class or work, even park further away from your location in the parking lot. Take the stairs or take a walk during lunch. You don't have to spend hours every day in the gym sweating, but you do have to make a conscious effort to move more, and sit less. This works great because it doesn't feel like work and you're burning more and more calories throughout the day." — Ajia Cherry, personal trainer and Founder at Functional Innovative Training
Make sure that the diet has been studied extensively for safety — and discuss any changes with your physician or registered dietitian before beginning a new diet. (If you don’t have a dietitian, find one in your area at the Academy of Nutrition and Dietetics website.) And do a self-check to ensure the diet fits with your own values and preferences.
"Eating directly out of a box or bag (almost always leads to overeating. Serve your food on a plate or in a bowl to keep portion sizes in check and to get used to what one serving looks like. Also, when we take the time to sit down during meals versus standing or driving, we tend to feel more satisfied with our meal. In fact, research shows that you will eat up to 30% more food at the next meal if you ate standing up! Serve yourself, sit down, and enjoy!" — Jennifer McDaniel, MS, RDN, CSSD, LD, food and nutrition expert
With its pre-packaged meals, portion-controlled menus, and strict caloric restrictions, the Nutrisystem meal delivery plan is ideal for people looking to lose weight fast without having to do any complicated meal planning. The company claims its 28-day program can help you lose up to 13 pounds by eating healthier versions of the foods you already love.

“There are many diet plans on the market today that promote good health,” says Emily Kyle, RDN, who is in private practice in Rochester, New York. “The key is finding one that does not cause you stress or agony.” Ask yourself questions such as: Would the diet guidelines make you happy? Anxious? Stressed? Are you able to follow them long term? “Factors such as enjoyment, flexibility, and longevity should be strongly considered,” adds Kyle.

Face it, if you want to lose weight over the long haul, your best bet is to make sustainable, long-term lifestyle changes.But sometimes life comes at you fast and you need a fast solution. One smart lifestyle change is to eat plenty of veggies—especially for someone looking to lose weight. Vegetables are nutrient-packed and provide plenty of filling fiber with hardly any calories. Plus, non-starchy veggies have a high water content, so they hydrate you while filling you up—the perfect combination for weight loss. Shedding those pounds means shedding old habits, check out the nine simple changes this woman made to lose 45 pounds and keep them off.


"It's far more difficult to eat a healthier diet and fit in exercise if you don't plan ahead. Plan out your meals for the week ahead and go grocery shopping over the weekend to ensure you have the ingredients you need on hand. If you can, do some meal prep in your downtime—cut fresh veggies, marinate your protein, cook up a batch of whole grains in advance. When you're prepared you're far less likely to order takeout. — Jessica Fishman Levinson, MS, RDN, CDN, culinary-nutrition consultant and founder of Nutritioulicious
We're pairing two Trader Joe's fan-favorite products--the Middle-Eastern Balela salad with beans and spices and 10 Minute Farro--to add protein, fiber and satisfying texture to these high-protein lunch bowls. To cut down on prep time, we're also using pre-seasoned grilled chicken breasts from the refrigerated section, bottled balsamic vinaigrette and a few other ready-to-use ingredients you can find at Trader Joe's to make these quick and easy meal-prep lunches.
Not much of a coffee drinker? Tea is also a natural diuretic, and types of herbal tea such as dandelion or fennel root can also lend a hand. In fact: When a recent study compared the metabolic effect of green tea (in extract) with that of a placebo, researchers found that the green-tea drinkers burned about 70 additional calories in a 24-hour period.
Ultimately, long-term weight loss requires some short-term behavior change and healthier habit formation. That's why we created our Good Housekeeping Nutritionist Approved Emblem, which exists to help turn smart food choices into healthier eating habits. All GHNA foods and drinks make it easier to find — and eat — good-for-you foods without additional time, effort, and cost. We target the lifestyle-related factors that make healthier eating hard, and find simple but creative solutions that actually work! Look for the emblem on labels wherever you shop for food.

The easier it is to seamlessly fit a diet plan into your life without major lifestyle changes, the better. After all, by focusing on holistic long-term results rather than trendy short-term solutions, sustainability becomes the number one enemy of the feared “yo-yo” effect. During our investigative process, we asked ourselves: What makes a diet plan sustainable? After long hours of research, we decided that the following factors can determine a plan’s sustainability, and thus its odds of success: 
"When going out for fast food, I used to get the large-size value meal. Now, I satisfy a craving by ordering just one item: a small order of fries or a six-piece box of chicken nuggets. So far, I've shaved off 16 pounds in seven weeks, and I'm on track to being thinner than my high school self for my 10-year reunion later this year." —Miranda Jarrell, Birmingham, AL
Each one of us has a different preference for food. Some like chocolate, some like french fries and so on. But the desire to have junk is common to all of us. What’s your preference for junk food? Is it chocolate? Is it sweets? Find your poison and make sure you don’t have easy access to it. Don’t stuff your fridge with junk food. ‘Watch what you eat and don’t binge!’, says Neha Dhupia.

Consequently, researchers have widely discredited the hCG diet, which involves using hCG injections, pellets, sprays, or drops, and consuming  as few as 500 calories daily. The diet is problematic not only because there’s a lack of research on hCG supplements, but also because the calorie requirement is dangerously low, potentially leading to nutrient deficiencies, fatigue, hormone imbalances, blood clots, and other issues. Thus, most experts agree the hCG diet is not safe for anyone, the Mayo Clinic notes. (35)
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