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)!
“The alkaline diet often has a focus on eating lots of fresh produce and unprocessed foods, which could be a good thing,” says Hultin. “However, keep in mind that this is not an evidence-based therapeutic diet. When people take it too far — for instance, drinking baking soda — or become too restrictive or obsessive over food choices, it can definitely turn negative.”
If you don’t have an established exercise routine, simply walking is the best first step toward weight loss. “Walking is a pretty good entry point for people,” says Gagliardi. This is particularly true if you have been out of the gym for a while and want to ease back into a workout routine. One small study published in The Journal of Exercise Nutrition & Biochemistry found that obese women who did a walking program for 50 to 70 minutes three days per week for 12 weeks significantly slashed their visceral fat compared to a sedentary control group.
What the expert says: ‘Over 50 years ago researchers realised they didn’t have to restrict energy every day and they still got a protective effect. In animals, these diets were shown to reduce visceral fat, oxidative stress and reduce cell proliferation, which is involved with the development of cancer. The models that were used in humans were two consecutive days of 650kcal then five days following a normal, healthy diet, versus a healthy med diet of 1500kcal.
Français: perdre votre graisse abdominale, Deutsch: Bauchfett weg bekommen, Português: Perder Barriga, Español: bajar la panza, Nederlands: Vet op je buik kwijtraken, Italiano: Eliminare il Grasso dalla Pancia, 中文: 减掉肚子上的赘肉, Русский: избавиться от жира на животе, Bahasa Indonesia: Menghilangkan Lemak di Perut, Čeština: Jak zhubnout na břiše, 日本語: お腹まわりの脂肪を取る, العربية: فقدان دهون البطن, हिन्दी: पेट की चर्बी घटायें, ไทย: ลดไขมันหน้าท้อง, 한국어: 뱃살 빼는 방법, Tiếng Việt: Giảm Mỡ bụng, Türkçe: Göbek Nasıl Eritilir
As you exercise, calories are burned and your body fat percentage decreases. So, exercising not only helps you lose belly fat, it also sheds fat from other areas. Running and walking are two of the best fat-burning exercises. Plus, the only equipment you need is a good pair of shoes. Between the two, running burns more calories, but walking really isn’t too far behind.
Trim Portions. If you did nothing else but reduce your portions by 10%-20%, you would lose weight. Most of the portions served both in restaurants and at home are bigger than you need. Pull out the measuring cups to get a handle on your usual portion sizes, and work on paring them down. Get instant portion control by using small bowls, plates, and cups, says Brian Wansink, PhD, author of Mindless Eating. You won't feel deprived because the food will look plentiful on dainty dishware.
The HMR Program uses meal replacements – think low-calorie shakes, meals, nutrition bars and hot cereal – in phases, coaching from experts, physical activity and an emphasis on fruits and vegetables to help dieters shed pounds fast. While last year the diet shared the No. 1 ranking in this category with the Biggest Loser diet, this year it has the top spot to itself. "This diet makes it easy to lose weight fast and would likely be effective for someone who wants to lose weight for a specific event," one expert said. "However, as far as long-term healthy-habit-forming, this diet falls short" in part because dieters don't learn to make their own healthy food choices.

What the diet advocate says: ‘It essentially means scaling your carbohydrate intake up and down in accordance with your activity levels,’ explains performance nutritionist Liam Holmes (phnutrition.co.uk). He uses the principles of nutrient timing to get elite athletes and CrossFit enthusiasts to their leanest before competitions. ‘The body works harder when it doesn’t have carbs as fuel, so it learns to become a more efficient burner of the fuel once it is there.’


One of the biggest differentiating factors of Weight Watchers is their famous claim that you can eat whatever you want. A points-based system allows members to select which indulgences they want to spend their calories on, and that’s also one of the secrets to its success. When people feel that they aren’t being restricted, psychologically, it is easier for them to follow a diet plan. This is part of what you’ll get from a Weight Watchers membership:

Wow… Thank you so much for this diet plan. I am following the plan and made a few substitutions for the things I do not eat BUT I make sure to follow the amount suggested & its working wonderfully. I even tried it with vegetarian substitutions for a day & ate tofu instead of chicken. This is my second week and I I’m so proud of myself and the results.. Not to mention it feels like I’m eating clean and when I eat clean I consume water far better then when I don’t . I’m also exercising just, simply walking 3 to 4 miles a day 5 days a week. Im not looking for life changeing results…lol but this plan is working. Looking forward to the summerrrrrrrr….!!!!!
This is hardly surprising when you consider just how successful (or not) quick-fix diet solutions have proven to be. Research indicates that not only do nearly 70% of fad diets fail due to people neglecting to couple them an appropriate exercise regime, but 65% of people who successfully complete a fad diet will end up gaining all of their weight back within a matter of months.
Many of our best-rated weight loss programs have tracking software available online, as well as mobile apps, or even paper-tracking programs for those who prefer hard-copy journaling. Other programs or diets may not have dedicated websites, but there are a wealth of free calorie and activity tracking websites that offer community support, recipes and even free exercise videos.
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.
If you're mostly sedentary (and let's face it—with 9-to-5 desk jobs being the norm, it's hard to avoid), you'll start to see noticeable results with just a slight increase in your activity level. Break up the hours in front of the computer by using your lunch break to move around. "I started walking for 45 minutes during my lunch break," says Melissa Leon, who ultimately dropped 53 pounds. "The area was super hilly, but feeling the burn in my butt and quads as I powered up those hills let me know I was making progress."
What the diet guru says: ‘Every phase of the New Atkins plan is based on proven scientific principles and is a completely safe, natural way to lose weight,’ say Akins Nutritionals Inc. ‘Phase one is about transforming your body into a fat burning machine and kickstarting your weight loss. By limiting the amount of carbs you eat to around 20g a day, your body will switch its main fuel source from carbs to fat.’

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.


In other words? "Drinking makes you more likely to eat sh*t," Dr. Seltzer says, referring to drunk foods. At the same time, he stops short of asking patients to quit alcohol cold-turkey to lose weight. Plus, research suggests you don’t have to, as long as your intake is moderate—i.e., less than about a drink a day. "If you drink a glass of wine every night and notice you eat more afterward, eat less early to account for this," he says. "Or, if you’re drinking four glasses of wine a week, drink three instead so you’ll won’t feel such a big difference."
Over the past few years it has become clear that weight is an important health issue. Some people who need to lose weight for their health don't recognize it, while others who don't need to lose weight want to get thinner for cosmetic reasons. We understand that in some ways your weight is different from, for example, your cholesterol level or your blood pressure, because you can't see what these are by looking at someone. Many patients have had health care providers who approached their weight in a less-than-sensitive or helpful manner. Some patients may have had health care encounters in which they felt blamed, but not helped. Successful weight management is a long-term challenge.
There’s a large spectrum of where people can fall on a vegetarian diet: For example, vegans consume no animal products, whereas ovo-lacto vegetarians eat both dairy and eggs. The eating style may help with weight loss, suggests a review published in August 2017 in Nutrients, but some vegans and vegetarians may become deficient in specific nutrients, such as calcium, iron, zinc, and vitamin B12, according to an article published in December 2017 in Nutrition, Metabolism and Cardiovascular Diseases. (23,24)
Appetite-suppressant drugs and other diet pills:"Wonder" products that permanently reduce weight do not exist. Products that promise immediate or effortless weight loss will not work in the long run. Appetite suppressants, which often contain a stimulant like caffeine or hoodia, are associated with side effects including nausea, nasal dryness, anxiety, agitation, dizziness, insomnia and elevated blood pressure. Alli reduces fat absorption; following the package directions will reduce risk of side effects, which may include oily diarrhea and anal discharge. With any product, side effects may be worse if you exceed the recommended dosage.

The MIND diet, or Mediterranean-DASH Intervention for Neurodegenerative Delay, is a sort of hybrid between the DASH diet and the Mediterranean diet. It features foods meant to slow the progression or development of Alzheimer’s disease, the most common form of dementia and an incurable neurodegenerative condition that more than 5 million Americans are living with, according to the Alzheimer’s Association. (12) Some research backs up this notion, including a study published in September 2016 in Alzheimer’s Dementia that found a link between following the MIND Diet and a reduced risk of the disease. (13)
Use a calorie-needs calculator like LIVESTRONG.COM’s MyPlate app to figure out your daily calorie needs, then subtract calories to create your energy deficit. With an app like MyPlate, you can factor in your weight-loss goal, and it will tell you the exact number of calories (as well has how much fat, protein and carbohydrates) you need to reach that goal.

Have you ever decided to skip a meal to cut back on your daily calorie count? Despite saving a few calories in the moment, this strategy almost always backfires. When you skip breakfast, or any meal, you'll begin to experience excessive hunger that can lead to craving unhealthy foods—and lots of them. You may also eat faster than you normally do after skipping a meal, causing you to miss the warning signs that you're full and resulting in overeating.
For even more impressive effects on body composition: aim for exercise forms which elicit a positive hormonal response. This means lifting really heavy things (strength training), or interval training. Such exercise increases levels of the sex hormone testosterone (primarily in men) as well as growth hormone. Not only do greater levels of these hormones increase your muscle mass, but they also decrease your visceral fat (belly fat) in the long term.
“A lot of people think the foundation of a paleo diet is high-fat meat, but I suggest that it’s vegetables,” says Hultin. The concept is to eat only foods — including meat, fish, poultry, eggs, fruits, and vegetables — that would have been available to our Paleolithic ancestors. This means grains, dairy, legumes, added sugar, and salt are all no-no’s.
“My dad is like a food-pushing wizard, he’s always pulling stuff out of his pockets or showing up with delicious food,” says Mary Mock. While the family tradition of surprise sweets was fun, when it came time to lose weight, she knew she had to put a stop to all that temptation. “At first, he seemed hurt when I kept saying no but when I explained it was for my health, he got on board. Sometimes I still have to remind him though!” she says.
With this eating style, you’re looking at a lot of menu planning and preparation. A review published in August 2017 in Nutrients suggests the diet could lead to weight loss, but the Academy of Nutrition and Dietetics warns the plan could also cause certain nutrient deficiencies, such as in calcium and vitamin D. (3,4) And, therefore, according to an article published in the January–February 2016 issue of the Royal Australian College of General Practitioners, anyone at risk for osteoporosis should avoid it. (5)
Obviously, it’s still possible to lose weight on any diet – just eat fewer calories than you burn, right? The problem with this simplistic advice is that it ignores the elephant in the room: Hunger. Most people don’t like to “just eat less”, i.e. being hungry forever. That’s dieting for masochists. Sooner or later, a normal person will give up and eat, hence the prevalence of “yo-yo dieting”.
Cons: In our experience, capping your calories low will probably mean a lot of internal strife and stress. Plus, we’re big fans of enjoying food instead of fearing it, and 800 calories doesn’t leave much room for satisfied taste buds. Lastly, if you’re currently eating double to triple this amount of food, dropping to a daily caloric intake this low can tank your metabolism and actually slow weight loss more than switching to one of these other diets might. (Curious? Here’s why starving yourself won’t help you lose weight.)
Stephen Colbert may be on to something. UCLA Center for Human Nutrition researchers divided study participants into two groups, each of which were fed a nearly identical low-cal diet for 12-weeks. The only difference between the groups was what they were given to eat as an afternoon snack. One group ate 220-calories of pretzels while the other group munched on 240-calories worth of pistachios. Just four weeks into the study, the pistachio group had reduced their BMI by a point, while the pretzel-eating group stayed the same, and their cholesterol and triglyceride levels showed improvements as well.
Noom: To help you figure out how to prioritize or limit food items, Noom offers color coding. Green means go for it — “green” foods include veggies and grains, and these should make up a solid 30% of your diet. “Yellow” foods include lean meats and starches, and these can account for a touch more — 45%. “Red” foods (red meats and sweets) should appear less than both green and yellow, around 25%. When you log meals, the app lets you know how well you’re aligning with these proportions.
Live It! This phase is a lifelong approach to diet and health. In this phase, you learn more about food choices, portion sizes, menu planning, physical activity, exercise and sticking to healthy habits. You may continue to see a steady weight loss of 1 to 2 pounds (0.5 to 1 kilogram) a week until you reach your goal weight. This phase can also help you maintain your goal weight permanently.

And while the weight room can be intimidating for women, pumping iron is key to getting a toned and fit physique. Don’t worry, lifting heavy weights won’t make you bulky — you just don’t have the testosterone to build the size of a man. Lifting will improve your posture, make your arms, core and lower body more shapely and boost your metabolism by building muscle. Resistance training also helps you hold onto muscle that you naturally lose as you age.
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.”
When you eat foods that are low- or no-fat, other ingredients are added in so that the food tastes like its full-fat counterpart. Those extra ingredients don’t add in the nutrients that have been stripped away, however, so you end up craving more because, despite the fact that you just ate, your body is still lacking in the vital nutrients it needs. You end up eating more calories than you would have if you’d just eaten the full-fat product.

Ready to step it up with your Fitbit tracker and set some new health and fitness goals? That’s awesome! Cue the fireworks! But if your ultimate goal is to lose weight, unfortunately, activity alone isn’t going to get you there—you also have to change what you eat. That does not mean you need to do a cleanse or detox. But it is possible to get a jump on weight loss, the smart and healthy way. Fitbit Dietitian Tracy Morris developed this kickstart one-week meal plan to help her clients see results, fast. Disclaimers: Please don’t try to lose more than 2 pounds per week, or dip below 1200 calories per day, which can compromise your metabolism. This is not a long-term plan, so you definitely don’t want to eat this way every week. But it’s a great way to kick off a weight loss goal, with specific meal and snack ideas, so you’ll see an initial drop—and be extra motivated to keep the momentum going this year. Increase your drive to succeed, and see how many consecutive days your can stay on track, by using Fitbit’s food logging feature.

What the expert says: ‘There is a large amount of evidence to suggest that following the MD reduces your risk of cardiovascular disease,’ says registered Dietitian and British Dietetic Association spokesperson Kirsty Barrett. ‘Significantly, a meta-analysis of randomised-control trials in 2011 found that the MD was effective for weight loss, though results were better when the diet was combined with energy restriction and physical activity. It has also been found to reduce LDL (bad cholesterol) more than low fat and low carb diets.’
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.
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.

A 2014 Harvard study found that men who did twenty minutes of daily weight training had less of an increase in age-related abdominal fat compared with men who spent the same amount of time doing aerobic activities, and other studies have shown similar levels of success when guys hit the gym to cut down on fat. The implication: Guys can cut belly fat most efficiently with weight training.

Sometimes, to whip your body into shape, you have to get a little nutty. While nuts are high in fat, it’s that very fat that makes them such powerful weapons in the war against a ballooning belly. In fact, research from Reina Sofia University Hospital reveals that study participants who consumed a diet rich in monounsaturated fats, like those in nuts, over a 28-day period gained less belly fat than their saturated fat-consuming counterparts while improving their insulin sensitivity.

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