U.S. News enlisted the help of a panel of food and health experts to rank 40 diets on a variety of measures, like how easy it is to follow, the diet’s ability to help a person lose weight in the short and long term, safety and more. The company then converted the expert’s rankings into scores that allowed them to determine the top diets. Beyond best overall diet, the experts also ranked the best diets for weight loss, healthy eating and more.
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 going out for fast food, I used to get the large-size value meal. Now, I satisfy a craving by ordering just one item: a small order of fries or a six-piece box of chicken nuggets. So far, I've shaved off 16 pounds in seven weeks, and I'm on track to being thinner than my high school self for my 10-year reunion later this year." —Miranda Jarrell, Birmingham, AL

The plan is simple: Commit to two weeks of restricted dieting, then transfer to a sustainable regime. Phase one: Cut out restaurant food, added sugar, eating while watching TV, snacking on anything other than fruits and veggies, and limit meat and dairy. You’re also asked to add four healthy habits, simple tweaks like having a good breakfast every morning.
It's the well studied yo yo effect, and the only solution is to maintain your new weight with as much determination and diligence as it took to drop the pounds in the first place. In fact, some experts now contend that keeping your weight consistent -- even if you're carrying around a few extra pounds -- may be more important to preserving your long term health than slimming down. Chronic yo yo dieting throughout your life can cause damage to your heart.
Sure, you certainly need to drink plenty of water to help expedite the process of ridding your body of excess sodium, you can (and should!) also consume high-water content foods. Reach for cucumbers, tomatoes, watermelon, asparagus, grapes, celery, artichokes, pineapple, and cranberries — all of which contain diuretic properties that will also help you stay full due to their higher fiber content.
Nuts, the second food to watch, contain a fair amount of carbohydrate, and it’s very easy to unwittingly scarf down large quantities. Cashew nuts are among the worst carb-wise – you’ll find that they contain around 20% carbohydrate by weight. For someone following a strict keto diet with a 20 grams of carbs per day allowance, this means that consuming 100 grams (which happens in a flash!) will have filled their daily quota. Peanuts tend to be around 10-15% carbohydrate – not putting them in the clear either.
What if we told you that you could make 20 percent of your belly disappear this year—poof, just gone? Penn State University researchers compared those who consumed avocado oil with those who consumed a flax-safflower oil blend. Those on the avocado oil diet—just three tablespoons daily did the trick—lost nearly 2 percent of their belly fat in just one month. For more ways to enjoy big, bold flavors, burn flab with these 8 Fatty Foods That Make You Skinny.
No, seriously. This annoying social media habit could end up helping you eat less. An analysis of attentive eating studies published in the American Journal of Clinical Nutrition showed that if people recall their last meal as being filling and satisfying, they tend to eat less during their next meal. So snap your delicious-looking food, and scroll back through your feed before you eat next.
Whole foods include fruits, vegetables, beans, nuts, seeds, whole grains, eggs, seafood, chicken and so on. Food philosophies may differ around which of these foods to emphasize, but that’s okay, since the evidence shows that there isn’t a single best way to lose weight. The goal is to select an approach that feels sustainable to you. If you can easily live without pasta, perhaps a low-carb method centered around veggies and quality proteins, like seafood, chicken, and lean beef would be a good fit. Vegans and vegetarians can lose weight by choosing fruits, vegetables, whole grains and plant proteins. Nut lovers may do well shedding pounds with a Mediterranean-style menu. Whatever diet appeals to your appetite and way of life, focusing on whole foods is something that all plans promote.
A. Not necessarily. "Restricting your calorie intake over a prolonged period of time will likely slow your metabolic rate," says Elisa Zied, R.D., a spokesperson for the American Dietetic Association. "After a decade of this, your body has probably become accustomed to functioning on fewer calories, so any increase could translate into extra pounds." But the effect isn't permanent.
Nutrisystem is so accessible, you can even grab it at your local Walmart. There are a few different plans to choose from, but each of them has you eating 4 to 5 times a day — and every meal and snack is high-protein, high-fiber, and contains zero trans fat, MSG, or artificial preservatives. Those who use this diet are said to lose an average of 1 to 2 pounds per week.
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