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.
"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
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)
Interested in following a more historical approach to eating? The Primal Blueprint is similar to the Paleo diet, which has roots in how our long-ago ancestors supposedly ate. This plan ditches grain, sugars, and processed foods while focusing on clean eating with plenty of protein (both animal- and plant-based), lots of vegetables, fruits, and healthy fats. The Primal Blueprint acknowledges other health factors too, advocating for lots of low-intensity activity, some high-intensity exercise, strength training, and plenty of sleep.
The most unique aspect of Noom is that it lets you communicate with your personal coach via text message as many times as you want, so you can work hand in hand towards your goal without missing a step. Sometimes, a simple word of advice or support can make all the difference, especially during the stressful moments that inevitably happen during a strict diet. Also, in case you forget to log in your foods, the app will send you reminders via pop up messages.
"Research continues to support the role of a high-protein diet and weight loss, however, we don't want to reach those protein needs exclusively with animal proteins. Plant proteins found in beans not only help us feel full and stabilize blood sugar but beans are associated with longevity. Who cares about being skinny if you die young?" —Jennifer McDaniel, MS, RDN, CSSD, LD, food and nutrition expert
When it comes to the "best" diet for most people, this one consistently ranks at the top of every list. If you can't afford a cruise to the Mediterranean (yet!), at least you can eat like the beautiful, long-living, and famously healthy people from the region. The Mediterranean diet teaches you to eat like a Sardinian, one of the "blue zones" identified by researchers as having a high number of people living past 100—by eating more fish, olive oil, healthy fats, and fresh vegetables. The point is to have not just a longer life but also a healthier and happier one, whether you're trying to lose weight or not. (Really—research shows that you can reap the benefits of the Mediterranean diet without cutting calories.)
After thoroughly researching the most popular and expert-recommended diet plans, we determined that all the diet plans to be included in our "Best of" list should meet the criteria stated below. However, there is one very important factor that, though essential to a person’s decision on whether or not to begin a diet, we could not review first hand: that factor is taste. 

Similar to the CICO diet, the Body Reset has gained popularity via social media, and there isn’t any definitive research that suggests the approach is safe and effective. Celebrity trainer Harley Pasternak created the plan, which is essentially a three-phase liquid diet comprised of smoothies and moderate exercise. While U.S. News notes you may lose weight on the diet, it may be tough to stick with, and isn’t safe for people with diabetes and heart disease. (38)

"It's no big surprise, but my go-to weight loss tip is to eat more vegetables. They are the most low-calorie food you can consume, and they're filled with health-boosting, satiating nutrients. From smoothies and eggs to soups, main and side dishes, they can fit in anywhere and boost volume and nutrition. If you want to eat more while still losing weight, veggies are your answer. —Laura Burak, RD, CDN


Christy is a spokesperson, nutrition and food writer and blogger for Huffington Post and others, a recipe developer and YouTube video producer. She is regularly interviewed by CTV National News, CBC, The Globe and Mail and many more on nutrition and health. She has her finger on the pulse of the latest nutrition and food science and trends, and synthesizes and prioritizes it just for you.
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By encouraging food tracking, calorie counting, and the consumption of mostly fruits, veggies, and lean protein (sugar and unhealthy fats are discouraged), you can theoretically lose as many pounds as you want with WW, as long as you do not deviate from your established plan. And, because WW does not prohibit any foods, it is one of the most sustainable diet plans out there. Once you get the hang of the points system, you can even do it by yourself for the rest of your life. 
"I tell all of my celebrity and professional-athlete clients to get between 6 and 8 hours of sleep per night. Everyone is overly focused on food, water and exercise, all of which are extremely imperative to weight loss and optimal health. However, without proper sleep, all of these the other factors are null and void. When you don't get enough sleep, levels of the hormone leptin drop, which increases appetite. This surge in appetite makes comfort food more appealing, which can derail weight loss efforts." — Jay Cardiello, celebrity fitness and nutrition expert

It seems counterintuitive to drink lots of water when you’re looking to lose weight fast—especially water weight—but staying hydrated is one of the most important steps you can take to lose weight. People often mistake thirst for hunger, so staying hydrated allows you to be more in touch with the times when you are actually hungry, rather than just thirsty. Plus, a lot of good things happen to your body when you drink enough fluids.
Weight loss ultimately comes back to the concept of calories in, calories out: Eat less than you burn and you’ll lose weight. And while it’s possible to lose water weight quickly on a low-carb diet, I certainly wouldn’t advocate for it. The diet itself can trick you into thinking that this eating style is working — when really, you might gain back what you lost as soon as you eat carbs again. That can feel incredibly dispiriting if you want results that last longer than a week.
"Nuts are a superior weight loss food in my book. They offer plenty of protein, healthy fat, and fiber that can really take the edge off hunger at any meal or snack. Nuts are also so versatile and convenient. They can be mixed into overnight oatmeal or yogurt at breakfast, paired with fruit as a snack, or tossed into a hearty salad for a little satisfying crunch at lunch. — Michelle Loy, MPH, MS, CSSD, Registered Dietitian Nutritionist and owner of Go Wellness in Orange County, California

We've consulted with our team of licensed nutritionists and dietitians to bring you informed recommendations for food products, health aids and nutritional goods to safely and successfully guide you toward making better diet and nutrition choices. We strive to only recommend products that adhere to our philosophy of eating better while still enjoying what you eat.


If you’ve been eating fast food for years, get real about your approach: You’re probably not going to stick to an organic, gluten-free, paleo overhaul for very long. "You want to change as little as possible to create calorie deficit," says Dr. Seltzer, who insists the best way to support sustainable weight loss is to incorporate small changes into existing habits. So instead of giving up your daily BLT bagels in favor of an egg-white wrap, try ordering your sandwich on a lighter English muffin. Or say you eat a snack bar every afternoon: Swap your 300-calorie bar for a 150-calorie alternative. "Your brain will feel the same way about it, so you won’t feel deprived," he says.
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