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.
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.
"While losing weight for effective long-term benefits takes time, there are a few quick ways to help shed 10 lbs in a month or so. It requires getting into a routine you know you'll stick with, making small nutritional changes so that you can stick with a plan, and having a bit of patience before you notice changes. It takes 4 weeks for you to see changes in your own body, and sometimes up to 8 weeks for others to notice!" — Nicole Houvig, AFPA Certified Personal Trainer with the Rockay expert team

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.
However, the most unique aspect of Diet-to-Go is its freshness, as all meals are prepared in-house and flash-frozen so preservatives never have to be added. This freezing process allows for fresher foods that last longer and taste more natural. What’s more, Diet-to-Go’s kitchens adhere to several guidelines for food safety and handling, including the HACCP, USDA, and FDA.

Right now, 2 out of 3 Americans are overweight or obese, and the number keeps skyrocketing year after year. Some experts consider obesity an epidemic more dangerous than that of opioids due to its role in the rise of life-threatening conditions such as diabetes, stroke, certain cancers, asthma, and osteoarthritis. Obesity is responsible for 18% of deaths among Americans over 40 years old, and 1 in 5 children in the US suffers from obesity. The medical costs for obesity-related treatments have now reached an exorbitant $150 billion per year.
This may explain why the fat-burning effects of eating more protein were confirmed in a study published in the American Journal of Physiology. One group was fed a high-protein diet (just over 1 gram per pound of body weight per day) while the second group consumed an amount closer to the lower recommendation of the RDA (recommended dietary allowance). The group eating the higher-protein diet burned the most fat.
Aim to get at least seven hours of sleep each night. Try going to bed and waking up at the same time each day. Why? Ever notice how you start to crave donuts and drive-thru breakfasts when you’re exhausted? When you don’t get enough sleep, your hormones are thrown out of balance. Running on no sleep can actually drive up the hormones that make you want to eat, while pushing down the hormones that signal for fullness—and that’s a recipe for weight gain. When you’re well-rested, it’s much easier to make healthy decisions and stay on track.
Aim to get at least seven hours of sleep each night. Try going to bed and waking up at the same time each day. Why? Ever notice how you start to crave donuts and drive-thru breakfasts when you’re exhausted? When you don’t get enough sleep, your hormones are thrown out of balance. Running on no sleep can actually drive up the hormones that make you want to eat, while pushing down the hormones that signal for fullness—and that’s a recipe for weight gain. When you’re well-rested, it’s much easier to make healthy decisions and stay on track.

"When clients come to me, many of them have been through the diet wringer. They've tried every fad and gimmick and, of course, they've failed to maintain long-term success. The key to losing 10 pounds and weight loss, in general, is to never feel like you're on a diet, because diets don't work. If you feel deprived, you will never make it past a few weeks. The only way to achieve long-term weight loss is to learn to appreciate food as fuel and slowly replaced processed food that cannot properly energize the body with real food that can. After a while this will become second nature and won't feel like a daily struggle." — Laura Burak, MS, RD, CDN
Going long periods of time without food does double-duty harm on our healthy eating efforts by both slowing down your metabolism, and priming you for another binge later in the day. (Think: You've skipped breakfast and lunch, so you're ready to takedown a whole turkey by dinner!) Make it your mission to eat three meals and two snacks every day, and don't wait longer than three to four hours without eating. Set a "snack alarm" on your phone if needed.
"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
Rather than rely entirely on the information provided by the companies to determine weight management effectiveness, we spent weeks browsing through hundreds of unpaid customer testimonies (not endorsed by any company) to get a feeling on the accuracy of the claims they make. In fact, these testimonials provided us with a much more truthful and in-depth insight regarding how effective diet plans really are. 
While the jury is still out on carbs and saturated fats, one thing is clear: added sugars are no good. They contain what are called “empty calories,” and their overuse has been linked to an increased risk of obesity, diabetes, heart problems, and tooth decay. In fact, the USDA says no more than 10% of your daily calories should come from added sugars. 
"While losing weight for effective long-term benefits takes time, there are a few quick ways to help shed 10 lbs in a month or so. It requires getting into a routine you know you'll stick with, making small nutritional changes so that you can stick with a plan, and having a bit of patience before you notice changes. It takes 4 weeks for you to see changes in your own body, and sometimes up to 8 weeks for others to notice!" — Nicole Houvig, AFPA Certified Personal Trainer with the Rockay expert team
There are many ways to do intermittent fasting — ranging from fasting for a number of hours each day up to an entire 24-hour fasting period one or two times a week. “If you're trying to kick a habit like eating late into the night, then stopping eating earlier in the evening and fasting overnight could be beneficial for you,” says Hultin. “There are many types of intermittent fasting, so ensuring you pick one that works for you and your lifestyle is important.”
On average, the daily caloric intake on Nutrisystem is 1,500 calories for men and 1,200 for women (low enough to lose weight but high enough to prevent “hangryness”). The daily menus are high in fiber to help you feel full, and are divided as follows: 50% carbs, 25% fat, 25% protein. According to a 2015 study by the American College of Physicians, people on Nutrisystem lose 3.8% more bodyweight than dieters who only receive guidance and counseling. Plus, thousands of positive customer reviews attest to Nutrisystem’s effectiveness, as long as you follow the program faithfully.
“This is a great way of eating that I highly recommend to many clients, and I even model in my own life,” says Elizabeth Shaw, RDN, who is in private practice in San Diego and is the co-author of Fertility Foods Cookbook. “Since the premise of the diet is designed to help people who have high blood pressure, low-sodium foods are recommended. But considering that most Americans exceed their daily sodium levels anyway, it’s not surprising that dietitians recommend this style of eating for treating many different conditions, such as heart disease and obesity.” 

"Stop focusing on calories and start focusing on the quality of the foods you eat. High-quality diet options are natural, whole, minimally processed foods, like vegetables, fruits, nuts or seeds that offer a lot more nutritional value in the form of vitamins, minerals, healthy fats and fiber. These foods help tame hunger naturally and nourish our cells at the deepest level so that we aren't left with constant cravings. — Michelle Loy, MPH, MS, CSSD, Registered Dietitian Nutritionist and owner of Go Wellness in Orange County, California
Even if you suffer from obesity, you don’t have to reach a “normal” BMI (more on this concept later) to reap the benefits that come with shedding some pounds. According to a Center for Disease Control and Prevention study, even a moderate weight loss ranging from 5 to 10 percent of the initial body weight can help you curb and prevent obesity-related illnesses. 
The TLC approach, contained in the 80-page manual “Your Guide to Lowering Your Cholesterol with TLC,” recommends less than 7% of daily calories from saturated fat, less than 200mg of cholesterol, 30 minutes of daily exercise, and drug treatment when necessary. However, critics of the low-fat plan point to its shunning of healthy high-fat plants and its ignoring of the fact that it's calories, and not fat, what determines whether or not a person loses weight.
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.
If you don’t have an established exercise routine, “walking is a pretty good entry point for people,” says Gagliardi. One small study published in The Journal of Exercise Nutrition & Biochemistry found that obese women who did a walking program for 50-70 minutes three days per week for 12 weeks significantly slashed their visceral fat compared to a sedentary control group.

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.


For example, when researching the advantages or disadvantages of animal fat, we found two opposing views: one that treats it as a “cure for all” (keto enthusiasts) and another that swears it off completely (vegans). Both claim to hold the truth, but an objective analysis of data does not support either claim completely. This is why, when it comes to researching the different diet plans, all claims made by diet providers should be taken with a grain of salt.
"Stepping on the scale frequently makes you aware of small changes and helps you quickly react to those changes. The National Weight Control Registry, a large group of people who have successfully lost at least 30 pounds and kept it off for 5 years, found that successful 'losers' weigh themselves often and make adjustments accordingly. When you begin to understand that sodium, carb intake, hormones and alcohol intake can impact weight and that it isn't possible to gain 2 pounds of fat overnight, you will begin to better understand your body. The key is to pay attention to overall trends; don't obsess over day-to-day numbers! — Jennifer McDaniel, MS, RDN, CSSD, LD, food and nutrition expert
Safety: The history of dieting is filled with dangerous and downright life-threatening practices, from the fad of ingesting cotton balls to the infamous tapeworm diet. That's why, when looking for the best diet plan, nutritional balance and reduced caloric intake (usually 1,200 for women and 1,500 for men) are a must. After all, a diet is supposed to make you healthier, not make you sick.
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)
"To lose weight you should primarily eat whole foods, but don't eliminate your favorites. Consistently eating nutrient-dense food on a day-to-day basis will improve the chances of upregulating metabolism and of eliminating nutritional deficiencies. That may mean tracking what you eat in some way at first, but it doesn't mean ruling out entire food groups or foods you love. Consistent quality nutrition while learning to enjoy treats in moderation will set you up for long-term sustainable success. — Victoria Viola, PN Certified Nutrition Coach, NSCA CPT, Co-Founder, Excelerate Wellness, LLC
Based on the concept of caloric density, which states that some foods have few calories in proportion to their size (say, a lettuce), while others have lots of calories packed in small portions (a regular chocolate chip cookie comes to mind), Volumetrics divides foods into 4 categories based on their calorie/volume ratio, and is perfect for people looking to binge on some foods while still shedding pounds. However, as with the calorie counting approach, Volumetrics does not take into account the quality of the calories, prioritizing quantity instead. The app Noom and Weight Watchers (both reviewed above) share similarities with this diet theory.

"People should pick activities they enjoy and that fit into their lifestyle in order to increase their chances of sticking with it to lose the last 10 pounds. For those who have hit a weight-loss plateau and can't seem to lose that weight, you'll need to mix things up in order to see results. Tabata-style training, HIIT classes and resistance training can all be effective weight-loss modalities for the right person." — Timothy Lyman, ACE certified personal trainer and Director of Training Programs at Fleet Feet Pittsburgh

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