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 South Beach Diet started as a book that was originally published in 2003, The South Beach Diet: The Delicious, Doctor-Designed, Foolproof Plan for Fast and Healthy Weight Loss (Est. $9). The book is still considered to be the best way to get information on the basic diet, but there are also many follow up books and cookbooks to supplement the original, as well as South Beach compliant recipes available around the Internet. The official South Beach Diet website is mostly fee-based.

If you follow food trends, you might think you have to fall in love with cauliflower and kale to reap all the rewards that veggies offer, but that isn’t the case. Be it broccoli, sweet potatoes, carrots, red peppers, cabbage, spinach, or any other vegetable, the idea is to eat a variety of them and find plenty of ways to enjoy their goodness. So if you just can’t stomach steamed Brussels sprouts, try them roasted, or give sautéed Brussels sprouts a try. If raw zucchini isn’t your thing, see if you like it spiralized into noodles or grilled on a grill pan.


The lowest ranking diets were the Keto Diet and the Dukan Diet, which tied for last place. People who follow the Keto Diet slash carbs and fill up on fats in order to help the body enter of state of “ketosis,” where the body breaks down fat. The Dukan Diet is a rule-heavy plan that goes in stages, including a phase of eating a lot of protein. The experts rated both diets as hard to follow
DO IT: Assume a pushup position with your hands below your shoulders and your body forming a straight line from your head to your heels. This is the starting position. Lifting your right foot off of the floor, drive your right knee towards your chest. Tap the floor with your right foot and then return to the starting position. Alternate legs with each repetition.

It’s true that a caloric deficit—burning more calories per day than you take in—is a requisite of weight loss. But creating a deficit doesn’t have to (and shouldn’t) involve deprivation. That goes for calories, carbs, sugar, fat, or any other commonly demonized nutrient. “No one food is responsible for your weight,” Langer says, explaining that a good vs. bad mentality sets people up for disordered eating and exercise habits. In fact, caloric deprivation increases how the brain responds to food, setting you up for binge-eating down the line, according to research from the Oregon Research Institute.
Good point: Even if a weight or body fat percentage is achievable, at a certain point, the investment required to make it happen or sustain it just isn’t worth it, Moore says. And as Albers explains, the ultimate goals are to have energy, be healthy, be able to lead the life you want, and feel that your healthy habits add to, rather than take away from, the quality of your life.
Packaged meal programs: Many diet plans rely on meal-replacement bars, shakes, or other snack type foods. Still others rely on frozen entrees as a major part of your diet. Ask yourself if you are okay with a bulk of your diet relying on prepackaged snacks, shakes, or frozen meals, or if you prefer the flexibility of cooking your own meals or eating out frequently.
Many people chew gum as a way to stifle cravings or prevent mindless eating but this tactic may have an unfortunate side effect: belly bloat. Everyone naturally swallows a small amount of air when they chew but it’s magnified for people who chew gum, which causes gas and bloating. In addition, some artificial sweeteners have been shown to increase your appetite for junk food, so gum could be increasing your waistline on two fronts.
Weight Watchers has been around for more than 50 years, and has always been a point-based system -- currently known as SmartPoints. Those points are calculated from a formula that takes into account the food's fat, sugar, protein and carbohydrate count. You're given a specific number of points each day that you track and log, as well as weekly bonus points for snacks or additional food items. Fitness is also a bigger component, and you're encouraged to set fitness goals when you set up your profile, then track them and, if you wish, exchange FitPoints for food.
High blood sugar levels coupled with high blood ketones, on the other hand, will mean that you have a pathologically low level of insulin – something non-diabetics do not suffer from. This can lead to ketoacidosis – a potentially life-threatening condition. If this happens, you’ll need to inject more insulin; if you’re at all unsure of what to do, contact a medical professional. Coveting really high blood ketones for weight control is not worth the risk for type 1 diabetics.
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.
Cut back on calories. The most important part of losing weight is not working out until you collapse — it's your diet. If you burn 500 to 750 more calories than what you eat every day, you will lose 1–2 pounds every week (any more than that is considered unsafe weight loss). There are tons of little changes you can make to cut calories from your diet, from replacing high-calorie dressings with vinaigrette and asking for all dressings/sauces served on the side, eating at the table instead of in front of the tv, skipping cheese and other fatty additions to your salads and meals, using smaller plates, leave off the whipped cream on your coffee drink, and on and on.[2]
Diet programs should not only be suited to a client’s health needs but also be attune with their budget. Aside from providing customizable menus, some diet programs also offer clients price-based menus. Some companies offer one-time diet plans as well as free trials. A money back guarantee is certainly a welcome for those who don’t find success with the diet program. Pricier diet programs don’t always translate to a successful and effective diet. The ultimate measure of an effective diet program is the client’s compliance with the recommended diet. 

One advantage of a commercial weight loss program is that you mitigate your risk of side effects when compared with a diet cobbled together yourself.  There’s a lot that can go wrong in a diet; if you restrict your food intake too severely, you’ll be missing out on vital micronutrients or your macronutrient balance can get thrown off.  In contrast, if you are too lax, you won’t end up losing much weight.


Proponents of the Paleo diet say it's a much healthier way to eat than the standard American diet, which is often heavy on added sugars and processed foods. Critics say it's too restrictive, banning dairy, wheat and legumes -- food groups that many nutritionists feel should be part of a healthy diet. However, as we noted earlier in this section, veganism and vegetarianism also ban entire food groups and do not come under the same cloud of criticism.

●Personalize your portions. If you’re a woman eating with a man, customize your portions to suit your body’s needs, says Sass. That might mean more veggies and smaller servings of protein and foods with starch and fat. For example, on burrito night, skip the tortilla in favor of a bed of greens, and stick to a piece of lean protein the size of a smartphone, a small scoop of a healthful starch such as brown rice and a dollop of guacamole.
Snacking is the key to Mary Rogerson’s 60-pound weight loss but it’s not just how often she eats but what. “I aim to eat at least seven servings of vegetables a day, along with some protein, every few hours,” she says. “And The best part is that by the time she’s loaded up on her rainbow of produce, she’s usually too full to eat much else and her cravings for sweets have gone way down.
If food contains the word “veggie,” it’s not automatically healthy. Don’t let marketing gimmicks fool you: The majority of foods are mislabeled and not as healthy as they claim to be, veggie chips included. You’re a lot better off eating fresh vegetables than synthetic and processed versions. You can always try making your own veggie chips by slicing veggies like kale, carrots, zucchini, and squash, really thin, misting them with olive oil, and then baking them in the oven. Here are 25 more weight-loss myths you need to stop believing.
So she started researching. She found something called the 21-Day Meal Plan, which seemed like it would work with their lives. The plan showed them what foods they could eat and what they should skip. They started by cutting sugar, junk and processed foods and added vegetables, fruit, legumes, whole grains and lean meats, such as chicken and turkey. In the first week, Parent noticed a difference.

Here’s a shocker: When a group of U.K. researchers told 30 women to avoid chocolate, then packed them into a room filled with the stuff; the women were much more likely to sneak a bite than individuals who hadn’t been given the order. Blame the allure of the forbidden: The more you tell yourself you can’t eat something you love, the more you’re going to want it.
"Your body needs a healthy balance of exercise and rest. Doing too much prevents the body from shifting excess fat. Exercising without rest can impact our levels of the steroid hormone cortisol and cause an increase of stubborn fat stored in the belly. Not allowing your body to recover can increase the risk of injury too, so make sure you factor in rest days to your plan."
The fad military diet consists of low-calorie, odd food pairings such as bun-less hot dogs with banana, carrots, and broccoli. “Any diet like the military diet that severely limits the amount of calories you consume or eliminates one or more entire food groups puts any individual at risk for nutrient deficiencies,” says Kyle. “This can be more harmful than holding onto those 10 extra lb you’re trying to lose.” (32)
Write down everything you eat this week. People who keep food diaries, according to a study published in the Journal of the Academy of Nutrition and Dietetics, lose an average of 6 pounds (2.75 kg) more than people who don't keep a record of everything that they eat.[10] So force yourself to write down the good, the bad and the ugly. Keep these tips in mind:
If you’re already enjoying and eating foods high in fat along with protein, you might want to consider going on the keto diet. It’s been proven to be more effective at weight loss than a low-fat diet, and you’ll likely have an easy time transitioning to it. (9) Among my weight loss tips, going keto is the diet that produces the quickest results alongside significant health changes.
If you want to work late at night, think again. When your biorhythms are off, you end up eating more. When you're tired you produce more ghrelin, which triggers cravings for sugar and other fat-building foods. Losing sleep can also alter your hormone production, affecting your cortisol levels that cause insulin sensitivity, prime reasons for belly fat! Getting about 7 hours of sleep a night is one of the best things you can do for your body shaping goals.
●Put tempting foods out of sight, out of mind. We naturally gravitate toward foods that are easiest to reach. So put candy on a high shelf or inside another bag behind something else so you’ll be less likely to go get it, says Cynthia Sass, co-author of “The Flat Belly Diet!” Put smarter choices, such as fresh fruit or popcorn, in bowls where they’re visible and within arm’s reach. Keep a water bottle with you so you won’t have to rummage through the fridge or walk to a vending area to get a drink.
The "all meat all the time" low-carb approach or strict veganism can be great options for people who thrive on clear diet rules (and those two are actually the most popular diets out there) but these extremes are not for everyone. If you prefer more of a moderate approach, the Flexitarian diet is the clear winner. The "flexible vegetarian" mindset allows you a healthy balance of plant-based foods, responsibly sourced meats, and quality fats. The best part? It's not super restrictive, so you have plenty of nutritious food options. (Start here: How to Adopt a Flexitarian Diet)

Insulin (in-suh-lin): A hormone made by the cells in your pancreas. Insulin helps your body store the glucose (sugar) from your meals. If you have diabetes and your pancreas is unable to make enough of this hormone, you may be prescribed medicines to help your liver make more or make your muscles more sensitive to the available insulin. If these medicines are not enough, you may be prescribed insulin shots.


Diet plans can be a great resource for people looking to lose weight or streamline their nutrition. When choosing one program over the other, think about the individual foods allowed on the diet—if you must source some ingredients yourself, does this fit into your budget? Do the meals satisfy your preferred tastes, and do they incorporate alternatives for food allergies or sensitivities?
If you want to lose weight, you’d better avoid special “low-carb” products that are full of carbs. This should be obvious, but creative marketers are doing all they can to fool you (and get your money). They will tell you that you can eat cookies, pasta, ice cream, bread and plenty of chocolate on a low-carb diet, as long as you buy their brand. They’re full of carbohydrates. Don’t be fooled.
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