From celebrity-endorsed to science-backed, finding the best diet for your body and lifestyle can be an exercise in frustration—definitely not the kind of exercise you need right now! To make your search easier, we've pulled together the 10 most popular diets based on which ones have consistently ranked highest on the annual U.S. News & World Report rankings, WebMD, and other current diet lists. Just know this: It's not about finding out which diet is the most popular overall but which one fits your goals and lifestyle the best. After all, the best diet for you is the one you can stick with (and enjoy)!
Getting a little more protein in your diet may be the way to go when you're trying to lose weight, according to a 2011 study published in The Journals of Gerontology. This study found that women over 50 lost more weight with a higher protein intake than with a higher carb intake eating the same number of calories. The researchers concluded that the improved weight loss was due to the preservation of lean body mass in the higher protein group. It's important to note, however, that the 2011 study increased protein intake using a whey protein supplement. Examples of weight-loss programs that are higher in protein include Weight Watchers, with 26 percent of calories from protein; the Atkins Diet, with 29 percent of calories from protein; and the South Beach Diet, with 30 percent of calories from protein.
Another popular mainstream diet, Dr. Barry Sears's plan is considered to be one of the first in the recent wave of "anti-inflammatory" plans. It sets you up for success by calibrating your plate to be a third protein and two-thirds carbohydrates (not starchy ones like potatoes, think colorful vegetables instead) with a little bit of MUFAs, or monounsaturated fatty acids (the good-for-you kind ) in the mix.
If you’re allergic or sensitive to a certain ingredient and continue eating it, you’re likely to struggle with losing weight. The food is triggers inflammation, as your body fights against it. As you continue eating the same food that’s making you ill, the inflammation continues, making you a lot more susceptible to extra pounds and other health issues.
One note about this diet plan before we dive in. A personal trainer by profession, Jillian Michaels’ weight-loss plans are not for the fainthearted. She’ll take you on a journey, transform your body, and make you reach the fitness goals you’ve been craving…but it won’t come easy. Go into this plan with the determination and awareness that you’ll be working hard, and the results will really amaze you.
If you dislike cooking, abhor making food choices, or simply want low-calorie options shipped to your door, Nutrisystem might slot into your life. But it can get expensive, and food selection and flavor are hit-or-miss. Mostly miss. “It’s enough substance to call it a meal, but the texture of every ingredient was lacking,” our tester reported without enthusiasm.

Ranging from just-juice to just-tea cleanses, these typically short-term plans can be dangerous. “Detoxes and cleanses are usually low in calories, protein, and fiber, all nutrients that our bodies need to function,” says Alissa Rumsey, RD, who is in private practice in New York City. “These plans leave you feeling hungry and cranky, causing a rebound food binge once you stop the detox.”
Also some research shows that the human body is primed to consume most of its calories during daylight hours. But the lifestyle is problematic for many: Because family meals and dinners with friends often are scheduled for after sunset, "people who try to stop eating after 7pm can’t do it every day for the rest of their lives," says Dr. Seltzer, who supports an alternative strategy: Eating a hearty meal at your regular dinnertime.
Since we can’t spot reduce fat, the only way to ever get those flat abs is to burn body fat overall. For this reason, HIIT workouts, exercises that work multiple muscle groups simultaneously (like push ups, squat thrusters etc.), and weight lifting are going to be the most effective fitness strategies for bringing out your six pack because they are the most metabolic. Hours of cardio and tons of crunches are not the way forward here.
“Diet and exercise are a marriage that should never divorce,” said Giancoli, noting that the benefits of exercise aren’t restricted to the sheer number of calories you burn during thirty minutes on a treadmill. (Need one of those, by the way? We have some favorites.) Instead, research shows that muscle tissue burns more calories than fat tissue, proving that “muscle mass is a key factor in weight loss.”
We pulled the top 14 of the best commercial diets (marketed to the public for profit) and the top 12 of the best diets overall. We also threw five of the most popular diet apps into the mix. Since these are largely tracking devices that don’t espouse unique eating habits, they don’t appear to meet US News’ definition of diet, but are still potentially effective weight loss tools.
Did bikini season sneak up on you? Is your soon-to-be worn wedding dress still just a touch too tight? Did a last-minute invite for a beach getaway come your way? You're a lucky dog – and a panicked one too because you want to drop pounds, and fast. These 10 diets are likely to help you lose significant weight within a year, according to a panel of experts who reviewed 41 plans for the U.S. News Best Diets rankings. Just remember: Short-term weight loss is markedly different from long-term weight loss, which is more important for your health.
Forgive yourself. So you were going to have one cracker with spray cheese on it and the next thing you know the can's pumping air and the box is empty? Drink some water, brush your teeth, and move on. Everyone who's ever tried to lose weight has found it challenging. When you slip up, the best idea is to get right back on track and don't look back.

First, as women near midlife, their ratio of fat to body weight increases rapidly. Second, many women see that new fat mostly around their bellies. This is “visceral fat” and it can change the entire shape of your midsection. Visceral fat cells are like miniature endocrine organs that are especially active, setting off inflammation and increasing insulin resistance. Third, visceral fat gets a huge boost from lifestyle issues like depression and stress, poor sleep, smoking (proven to increase belly fat ), irritability, and drinking fructose-sweetened beverages (leads to more visceral fat and decreases insulin sensitivity).

It is important to understand that weight is entirely a function of input and output. The input is the food you eat and the calories contained therein. The output is your energy output. To lose weight the output needs to be greater than the input. It is that simple. Do not believe any of the diet fads. If you are currently not gaining or losing weight then just burning 300 extra calories per week or eating/drinking 300 calories less per week (2 sodas for example or a small burger) WILL make you lose weight - in this case around 5 pounds of fat per year.
After 30 days on the diet, you’ll slowly add in one of the restricted foods — one at a time and for a few days only — to see how your body reacts. At this point, you can continue just avoiding the ingredients you suspect you’re sensitive to, or go to an allergy specialist to receive confirmation and see if there’s anything else you might be allergic to.
The plan promotes long-lasting, sustainable changes, and undoubtedly a bounty of research backs this up. In fact, one December 2013 study in the American Journal of Medicine shows that people following Weight Watchers were close to nine times more likely to lose 10 percent of their body weight, compared to people following a self-help diet plan. (20)
Virtual gastric band uses hypnosis to make the brain think the stomach is smaller than it really is and hence lower the amount of food ingested. This brings as a consequence weight reduction. This method is complemented with psychological treatment for anxiety management and with hypnopedia. Research has been conducted into the use of hypnosis as a weight management alternative.[17][18][19][20] In 1996 a study found that cognitive-behavioral therapy (CBT) was more effective for weight reduction if reinforced with hypnosis.[18] Acceptance and Commitment Therapy ACT, a mindfulness approach to weight loss, has also in the last few years been demonstrating its usefulness.[21]
The Mayo Clinic Diet is a long-term weight management program created by a team of weight-loss experts at Mayo Clinic. The Mayo Clinic Diet is designed to help you reshape your lifestyle by adopting healthy new habits and breaking unhealthy old ones. The goal is to make simple, pleasurable changes that will result in a healthy weight that you can maintain for the rest of your life.
If you’re routinely skimping on the recommended seven to nine hours, or you have difficulty falling or staying asleep, it’s time to get serious about your bedtime rituals. Your better-sleep strategy includes: limiting caffeine past the early afternoon; sticking to alcohol caps of one drink for women, two for men (since alcohol can interfere with the quality of your sleep); and staying off the phone and iPad within an hour of bedtime.
If you have Celiac disease, of course you can and should eat gluten-free foods. But for those who choose gluten-free options because they think it’s healthier, think again. “As alternative grains are more bitter than their wheat-, barley-,  and rye- gluten-containing counterparts, the most common means to mask bitterness is…wait for it…by adding high levels of sugar,” says Alvin Berger, MS, PhD, nutritionist, lipid biochemist and co-founder of Life Sense Products. “The sugar is added in its plethora of alternative forms and names, to provide cover. The bottom line is that many gluten-free foods are higher in total sugars and high glycemic-carbs than their gluten-containing counterparts.”

Almonds, peanuts, walnuts, pistachios — at GH, we're nuts about nuts! People who snack on nuts may have lower abdominal fat than those who munch on carb-based treats, according to a 2015 study in the Journal of the American Heart Association. Nuts are rich in monounsaturated fats, a heart-healthy (and more satisfying) pick than their grain-based counterparts.
You know you're supposed to eat more protein to lose weight, but you might not know exactly why. Well, it actually has to do with how your body handles insulin. "Your body starts to produce more insulin as you age, since your muscle and fat cells aren't responding to it properly," explains Louis Aronne, M.D., director of the obesity clinic at Cornell University.
Don’t let extra hours lounging in bed stand between you and a flatter belly. While getting enough sleep can help boost your metabolic rate, sleeping in may undo any benefit you’d enjoy from catching a few extra winks. One study reveals that late sleepers who snoozed past 10:45 in the morning ate nearly 250 more calories over the course of the day, despite eating half as many fruits and vegetables as their early bird counterparts. Even worse, they chowed down on more salty, sugary, and trans fat-laden fast food than those who woke up earlier. If you happen to head out of the house early, you’re in for an additional metabolic boost; researchers at Northwestern University have found that people exposed to just a short period of early morning sunlight had lower BMIs than their late-waking counterparts.
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.)
This popular diet program is fairly restrictive — and for the first 30 days, dieters must cut out grains, legumes, most dairy, added sugar, and alcohol without any slip-ups, according to the Whole30 website. (29) The aim is to “reset” your body and to adopt dietary habits resulting in weight loss. Cutting out added sugar and alcohol has merit, but all the restrictions prove challenging and could lead to nutrient deficiencies and disordered eating.
The popular "flat belly diets"embrace much of the wisdom found in eating a Mediterranean diet, which helps everything from brain health to hearth health. The basic premise for both diets is eat foods rich in monosaturated fatty acids (MUFA) that may help reduce your belly fat storage. MUFA-rich foods include olive oil, nuts and seeds, avocodos, and fish. Eating yogurt regularly has also been found to be helpful in reducing belly fat.
If you've been trying to eat healthy for a long time, you know how quickly you get sick of chicken breasts and broccoli. Break out of your diet rut with the Middle Eastern diet. It's based on the same principles as the Mediterranean diet but with more of an emphasis on plant-based foods and a different flavor profile. With all the tasty and healthy spices, you'll never get bored of making dinner and you'll get all the same heart-healthy benefits as its geographical cousin's diet.

Given that all participants in the study were overweight and “healthy”, what was not studied, and could have been very useful, was what was the impact of the two diets on participants’ blood sugars (HbA1c), insulin levels, and on some measure of inflammation. It is possible that there could have been little difference in weight loss between the two diets but big differences in the impact on risk factors related to diabetes.
Another frontrunner on the U.S. News and World Report 2016 list (it came in at number two in the weight loss category), the HMR Weight Management program is used in over 200 medical facilities around the U.S. Dieters embark on two phases, the first centered around HMR's products (meals, shakes, snacks) and the second transitioning towards a sustainable plan emphasizing fruits, vegetables, lean proteins, and whole grains.

For years, research has supported the fact that Weight Watchers is one of the best weight-loss diets. Thanks to its flexibility, easy-to-understand food tracking system, and group support, Weight Watchers consistently ranks number one for "best weight loss diet" and "best commercial diet" in the U.S. News & World Report rankings. (Oprah's endorsement probably didn't hurt either!) They recently revamped their program and changed their name to WW to signify a focus on overall wellness—not just weight-loss—so that users who aren't focusing on weight can also use the program to eat better, work out more, or develop a more body-positive mindset.
Keeping a toothbrush handy can do more than polish up that smile (and counter the effects of all that belly-slimming garlic); brushing your teeth throughout the day can also help you ditch that belly fat fast. A study conducted a sample of over 14,000 participants found that brushing after every meal was linked to lower weight. That minty toothpaste flavor not only clashes with virtually every food, brushing may also trigger a Pavlovian response that tells your brain the kitchen’s closed.

Some people feel better supplementing the already active T3 (sometimes prepared from pig thyroid glands), as it can give a stronger effect than the T4 hormone, but its effect is often harder to control. Swedish healthcare rarely prescribes or offers such T3 treatment, as it often lacks advantages and may pose a risk when doses are high for an extended period of time.


Then, there’s biochemistry. In women, ghrelin — the “I’m hungry” hormone — spikes after a workout, while leptin — which tells the brain ‘I’m full!’ — plummets, according to a 2009 study in the American Journal of Physiology — Regulatory, Integral and Comparable Physiology. Not so in men. So post-workout, women tend to eat more, which puts them at risk to gain weight. Men don’t experience this same hormonal fluctuation.
Losing belly fat shouldn’t mean strict dieting or deprivation. “People often think that you have to eat certain foods or avoid certain foods [to lose weight] and in reality, it comes down to eating more of a balanced diet that is portion- and calorie-controlled,” says Zeratsky. “This allows your body to have enough energy to do what it wants to do while managing weight.”
Having support is very important with weight loss. If everyone can get on board, it will be easier to achieve your goals. Talk to your family (or friends, roommates, etc) before starting your diet and let them know your plan. Explain why you are making this decision and ways they can help you succeed. Even if they do not change with you, that's okay! Go forward with your plan! They may decide to join you once they see you succeed with weight loss.

Usually, a weight-loss plan combines elements of healthy eating and exercise to give its users the best chance of achieving their target weight. In addition to specifying a weekly menu plan or giving guidelines regarding calorie-intake and food selection, the best weight-loss plans of 2019 give you clear exercise regimes or allocate you fitness points for activities you perform on a day-to-day basis, like housekeeping, for example.


If you’ve got weight to lose and you want it gone fast, try swapping out your usual proteins in favor of fish. Not only is fish lower in calories than an equivalent amount of beef or chicken, a study published in Obesity reveals study subjects who added omega-3 fatty acids, like those found in fish, to their diets shed more weight and had an easier time keeping it off than those who skipped them.
When researchers in Brazil studied 13,000 people over a three-year period, they found that men with the highest levels of inflammatory agents in their body were also the most likely to gain weight. And periodontal disease, which is caused by poor oral health care, is one of the most common sources of inflammation. Brushing twice a day, flossing, and making regular trips to the dentist are the best ways to prevent the disease. Hate flossing? Studies show that a dose of Listerine may be just as effective at reducing levels of inflammatory bacteria within the mouth.
Want to instantly burn more blubber in your workout? Research conducted at Brunel University found listening to your favourite tracks will increase your endurance by a massive 15 per cent. And if you really want to turn your weight loss up to 11, Social Psychological and Personality Science found that heavy bass increases your sense of personal power to help you get the most out of the gym.
Invest in single-serving containers. The National Institute of Diabetes and Digestive and Kidney Diseases says that a serving size on a food label may be more or less than the amount of food you should eat, depending on your age, height, sex, and weight. Once you're done cooking, place the excess servings in the containers to eat for lunch or dinner tomorrow. That way, you won't polish off everything in one sitting.
It's no surprise that Dr. Dean Ornish's program is such a powerful tool for weight loss, considering its easy adaptability as a lasting lifestyle. The diet is mostly plant-based, keeps sodium intake in moderation, and limits coffee to a cup a day (two cups decaf) — so if you're looking to lose weight while keeping your java flow, you may want to consider another plan.
Lose It! This two-week phase is designed to jump-start your weight loss, so you may lose up to 6 to 10 pounds (2.7 to 4.5 kilograms) in a safe and healthy way. In this phase, you focus on lifestyle habits that are associated with weight. You learn how to add five healthy habits, break five unhealthy habits and adopt another five bonus healthy habits. This phase can help you see some quick results — a psychological boost — and start practicing important habits that you'll carry into the next phase of the diet.

As with many foods, there are healthy versions and ones that make promises they can’t deliver. Some bars that promise “pure protein” have the same nutritional value as a candy bar, so it’s important to research before purchasing. Rather than just counting calories, check out the actual ingredients; is it made up of real food? Skip protein bars for weight loss that include soy in favor of ones that use proteins that include leucine, valine and isoleucine. The protein, plus the fiber and fat, will be what plays a key role in keeping you full throughout the day.
Consult your physician and follow all safety instructions before beginning any exercise program or using any supplement or meal replacement product, especially if you have any unique medical conditions or needs. The contents on our website are for informational purposes only, and are not intended to diagnose any medical condition, replace the advice of a healthcare professional, or provide any medical advice, diagnosis, or treatment.
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