Regardless of which of these diets appeals to you, the biggest challenge for any of them is that you have to have at least some ability in the kitchen -- and for some you have to be pretty competent -- because all of them are based, at least in part, upon purchasing and preparing your own, whole foods. That may be a challenge if food prep is not your thing or you're often pressed for time. In that case, Weight Watchers is probably the easiest program for the non-cook to follow. They not only have a complete line of prepared foods, they also have tools to give you the points values for the menus of many popular restaurants. If you really want to make dieting as simple as possible, skip on over to our discussion of the Best Prepackaged Diet Plans for some really convenient weight loss plans.
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.
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Too little sleep or too much sleep can throw your stress and regulatory hormones out of whack, and may lead to weight gain. A single night of sleep deprivation can increase levels of ghrelin (a hormone that promotes hunger), making you more likely to overeat the next day. Reduced sleep may also lead to fatigue during the day (duh) and less physical activity, which may be another reason why people who regularly don't get enough sleep tend to gain weight.
Probably. If you have overweight or obesity, your risk for many health problems is higher than that of women who are at a normal weight. Even a small amount of weight loss can lower your risk for or even prevent health problems like diabetes and heart disease. Calculate your body mass index (BMI) to see whether you’re at a healthy weight. If you have overweight or obesity, start by making small changes to your eating habits and getting more physical activity.
Food preferences: Think about whether the foods on a given diet are things that you generally enjoy. If you hate eating greens, you won’t like a diet filled with salads; but if you have a sweet tooth, a diet that substitutes milkshakes for meals might be more your speed. Consider a diet's overall approach to food and ask yourself, realistically, if you can eat the foods on this plan more or less for the rest of your life? And will you enjoy the foods on a given diet plan, or if it will feel like a “diet” food that you won’t be able to stick with long-term?
Fibrous foods are as close to a “miracle belly flattening pill” as we have. Fruits, vegetables, and whole grains, particularly those high in soluble fiber, have been proven to reduce fat around your midsection. In addition, these foods fill you up so you eat less, flattening your stomach over time. Try one of these 5 easy ways to turn off your fat genes and keep the weight off for good.
“Exercise should not be used to purge calories,” Albers says. “Instead, to boost your mood to keep you motivated.” The thing is, exercise is great for you and can make you feel awesome. And feeling good about yourself seems to be actually useful in weight-loss efforts. Plus, some research has shown that changes in exercise behavior can lead to changes in eating behavior. “In part, it is neurochemical. Movement and exercise you enjoy boosts your serotonin and dopamine levels, which makes you feel good all the way around,” Albers says.
HCG, or Human Chorionic Gonadotropin, is a hormone produced during pregnancy by the placenta after implantation, and doctors sometimes prescribe it for fertility issues. But this hormone has also gained popularity as a weight-loss supplement — and using it as such can be dangerous. In fact, the U.S. Food and Drug Administration (FDA) warns against purchasing over-the-counter hCG, as these supplement products are illegal. (34)
For example, you might not realize just how much you eat when you go out to happy hour with friends. But if you take the split second to take a step back and make yourself aware of that fact, you’re more able to make a healthy decision. “The awareness and then planning and coming up with strategies for what else I can be doing—that might give me the same benefit of eating those comfort foods that make me feel better,” says Gagliardi.

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.


If you watch TV often, you've probably seen a commercial pop up for Jenny Craig. When you do the diet, you receive a unique weight loss plan for your specific lifestyle and have a personal consultant to check in with at least once a week. And, the meals are delicious: There are more than 100 menu items to choose from for your meals, which are five a day plus one snack of your own.
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."
Additionally, many women have to face one lifestyle change before getting to another, such as overhauling eating habits before taking on exercise. For example, Michelle DeGennaro got a handle on her diet and soon after found that she was more inclined to exercise. "Feeling lighter on my feet was thrilling, and it gave me the confidence to start walking every day," she says. And as Blanca Valdez noticed, "Eating right made my energy soar, which I channeled into exercise." She has kept off 78 pounds.
Illescas-Zarate, D., Espinosa-Montero, J., Flores, M., & Barquera, S. (2015, April 19). Plain water consumption is associated with lower intake of caloric beverage: Cross-sectional study in Mexican adults with low socioeconomic status. BMC Public Health, 15, 405. Retrieved from https://bmcpublichealth.biomedcentral.com/articles/10.1186/s12889-015-1699-0

The best way to lower your cortisol levels is by decreasing stress. While it’s easier said than done, weight loss tips like this one involve you simply taking the time to put yourself and your health first. Practicing saying “no” to events and things you know will cause you stress, carve out time to exercise, set aside some time daily — even just 5 minutes — to meditate or practice gratitude and learn to recognize when you’re feeling extra worn out and need a time out.
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. 

But the information that researchers are unearthing about the differences in the way that men and women lose weight inspires hope that the next generation of weight-loss advice will be more tailored and effective than the generic tips that have gotten Americans no closer to sliding into their dream jeans. (More than a quarter of Americans are obese, according to a May Gallup poll, a number that has been ticking upward for years). Although experts have long insisted that losing weight is simply a matter of burning more calories than you consume, they now say that it’s much more complicated than that.


“Once you decide on the method that you’re going use to lose weight, put the blinders on every well-meaning friend or family member who thinks it’s not a good idea. For me, it was raw juicing. Along with a healthy diet, it helped me lose 48 pounds and keep it off for over a year.” —Jennifer Devlin Waller, 48, founder and CEO of Celtic Complexion Luxury Artisan Skincare
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.
In addition to weight, women over 50 are also at a greater risk of developing chronic illnesses -- including high blood pressure, diabetes and heart disease -- due to the changes in hormone levels. Weight-loss programs that focus on health issues may also work on helping you lose those unwanted plans. Diet programs that focus on heart-health include the Ornish Diet and the TLC Diet; programs that focus on blood sugar control include the carbohydrate-counting diet and using the Glycemic Index to help make dietary choices.
When Johns Hopkins researchers compared the effects on the heart of losing weight through a low-carbohydrate diet versus a low-fat diet for six months—each containing the same amount of calories—those on a low-carb diet lost an average of 10 pounds more than those on a low-fat diet—28.9 pounds versus 18.7 pounds. An extra benefit of the low-carb diet is that it produced a higher quality of weight loss, Stewart says. With weight loss, fat is reduced, but there is also often a loss of lean tissue (muscle), which is not desirable. On both diets, there was a loss of about 2 to 3 pounds of good lean tissue along with the fat, which means that the fat loss percentage was much higher on the low-carb diet.
Don’t buy your tickets to Bonnaroo just yet; the kind of acid that will help you slim down is the stuff right inside your cabinet. A 12-week study published in Bioscience, Biotechnology, and Biochemistry reveals that obese study subjects who made vinegar part of their diet dropped more belly fat than a control group, and other research suggests that acidic foods, like vinegar, can increase the human carbohydrate metabolism by as much as 40 percent.
Tapsell, L. C., Dunning, A., Warensjo, E., Lyons-Wall, P., & Dehlsen, K. (2014). Effects of vegetable consumption on weight loss: A review of the evidence with implications for design of randomized controlled trials [Abstract]. Critical Reviews in Food Science and Nutrition, 54(12), 1529–1538. Retrieved from https://www.ncbi.nlm.nih.gov/pubmed/24580555
If the diet is a quick fix rather than one that promotes lasting lifestyle changes, this could pose a problem. In particular, extreme diets that promise big weight loss up front aren’t always sustainable — and you may end up overeating or even binge eating if you feel deprived. “Consider if the diet’s habits are ones you can continue throughout your lifetime, not just 21 or 30 days,” says Angie Asche, RD, a sports dietitian in Lincoln, Nebraska.
Forget old low-carb diet plans that focused on processed protein bars and shakes. This year, the keto diet got high marks for low carb. Keto, short for "ketogenic," is all about training the body to burn fat for fuel. How? By eating fat—and lots of it. Most keto diets recommend getting at least 70 percent of your daily calories from fat and the rest from protein. The goal is to eat as few carbohydrates as possible. Proponents say it helps them drop weight fast with little or no hunger in addition to perks like more energy and mental clarity. (Interested? Here's everything you need to know about the keto diet.)

Markwald, R. R., Melanson, E. L., Smith, M. R., Higgins, J., Perreault, L., Eckel, R. H., & Wright, Jr., K. P. (2013, April 2). Impact of insufficient sleep on total daily energy expenditure, food intake, and weight gain. Proceedings of the National Academy of Sciences of the United States of America, 110(14), 5695–5700. Retrieved from https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3619301/
This popular plan recently underwent a rebranding to create a more balanced program, changing its four-phase approach with the help of a science advisory board. The Atkins Diet is still low-carb, but you won't be chowing down on steak and eggs all the time to promote weight loss. Lean protein is still key, but there's more of a spotlight on fiber, fruit, vegetables, and healthy fats.
Popularized by the documentary Forks Over Knives, the Ornish diet is a low-fat, plant-based diet plan based on whole grains, vegetables, fruits, and legumes. It's based on a lacto-ovo style of vegetarianism, allowing only egg whites and nonfat dairy products. It's packed with vitamins, fiber, and lots of filling plants to keep you satiated. Some studies have shown it can reverse heart disease and have beneficial effects on other chronic health conditions. (BTW, there is a difference between a vegan diet and a plant-based diet.)
Fiber works its weight loss magic in multiple ways. It helps you feel fuller, longer so eating fiber-rich foods is the dieting equivalent of working smarter, not harder. Plus, fiber takes a long time to digest, so fiber-rich foods don’t cause spikes in blood sugar that can send your insulin levels soaring. On the other hand, when you eat the so-called bad carbs (the refined or sugary ones that lack fiber), you may wind up with an insulin response that promotes fat storage. The takeaway: More fiber equals less fat storage.
You can get a lot of valuable vitamins and nutrients from fruit. However, when you just drink the fruit juice, you lose out on the fiber from the actual fruit that fills you up. As Rachel Harvest, a registered dietitian affiliated with Tournesol Wellness in New York, told Cosmopolitan, “Even 100 percent juice is just empty calories and another blood sugar spike.” If you’re serious about losing weight, here are 10 weight-loss products that are worth your money.
In a way, moderate-intensity physical activity is that "magic pill" a lot of people are looking for, because the health benefits go beyond keeping your waistline trim: Not only can it reduce your risk of cancer, stroke, diabetes and heart attacks, but studies have shown that physical activity can significantly improve the moods of patients with major depressive disorders.
Stress skyrockets your levels of cortisol, often called “the belly fat” hormone because it signals to the body to store fat around your waist. Add the daily stressors of living our modern lifestyle and you can see how cortisol can be constantly coursing through your veins. This perma-stress mode isn’t good for a lot of healthy reasons, your tummy being just one of them, so it’s important to take time every day to de-stress. Yoga, meditation, walking, journaling, doing a hands-on hobby, or playing a musical instrument are all great time-tested methods. (Hint: Know what isn’t? Watching television. The boob tube actually increases your levels of cortisol!)

But the information that researchers are unearthing about the differences in the way that men and women lose weight inspires hope that the next generation of weight-loss advice will be more tailored and effective than the generic tips that have gotten Americans no closer to sliding into their dream jeans. (More than a quarter of Americans are obese, according to a May Gallup poll, a number that has been ticking upward for years). Although experts have long insisted that losing weight is simply a matter of burning more calories than you consume, they now say that it’s much more complicated than that.


Take a walk through the supermarket, and you’ll be assaulted with aisle after aisle of low-fat and no-fat foods, “healthy” chips and cookies and juices and sodas galore. You likely already know that if you want to lose weight, cutting out processed foods and sweets is the first and most obvious step. But those healthy-sounding options can be just as bad, too.
Trying to lose weight? Having trouble? Women often find it harder than men to shed excess pounds. In part that's because women's bodies have a tendency to "hold on" to a certain amount of fat. But in some cases the problem can be traced directly to certain habits and lifestyle traps - including many that can easily be remedied. Here are 10 weight-loss traps to watch out for:
Created in 2003 by cardiologist Arthur Agatston, this low-carb diet features three phases. The first phase is the most restrictive, limiting carbs such as potatoes and rice. Each subsequent phase becomes more lenient, and the diet emphasizes lean protein, unsaturated fats, and low-glycemic carbs such as nonstarchy vegetables. South Beach promotes lasting lifestyle changes, according to the Mayo Clinic. (21)
When you're trying to lose weight, diet is one piece of the puzzle; the other is exercise. The AND recommends women over 50 engage in 30 minutes of moderate-intensity exercise -- such as a brisk walk or bike ride -- most days of the week to help burn extra calories. Two sessions per week of weight-training can help build and preserve muscle, which is beneficial for weight loss maintenance. According to the National Weight Control Registry, 94 percent of the people who have lost weight and kept it off engage in some sort of regular physical activity. If your doctor gives the okay for exercising, consult a personal trainer for fitness ideas that are right for you.
Eat More Produce. Eating lots of low-calorie, high-volume fruits and vegetables crowds out other foods that are higher in fat and calories. Move the meat off the center of your plate and pile on the vegetables. Or try starting lunch or dinner with a vegetable salad or bowl of broth-based soup, suggests Barbara Rolls, PhD, author of The Volumetrics Eating Plan. The U.S. government's 2005 Dietary Guidelines suggest that adults get 7-13 cups of produce daily. Ward says that's not really so difficult: "Stock your kitchen with plenty of fruits and vegetables and at every meal and snack, include a few servings," she says. "Your diet will be enriched with vitamins, minerals, phytonutrients, fiber, and if you fill up on super-nutritious produce, you won't be reaching for the cookie jar."
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