This dark, leafy green has a long list of benefits: it's a rich source of iron, folic acid, vitamin K, vitamin C, lutein, and powerful antioxidants that can help fight diseases like ovarian and breast cancer. Spinach is also loaded with magnesium, which can lower blood sugar and insulin levels (aiding your body in weight loss as a result), according to a 2013 study.

“Calorie counting is not the only game in town when it comes to weight loss. Chemical counting should also be part of our decision-making process. Processed foods, plastic bottles, lotions, non-organic dairy, and many other items in our daily lives contain endocrine disruptors that can lead to hormonal imbalance and stubborn weight gain,” Jennifer Cassetta, clinical nutritionist, personal trainer, and expert from ABC’s “My Diet Is Better Than Yours” tells us in 22 Top Weight Loss Tips, According to Nutritionists.
Is there anything avocados can't do? This creamy superfood (loaded with monounsaturated fats, potassium, magnesium, folate, and vitamins C and E) has been linked to improved vision, good heart health, and a reduced risk of certain cancers. And avocados can also help whittle your middle: according to one study, people who regularly consume them weigh less and have smaller waists than those who do not. Another study found that women who eat half an avocado at lunchtime might experience reduced food cravings later in the day.
Like peanuts, avocados contain metabolism-enhancing monounsaturated fats that have been shown to reduce hunger. In fact, a study in Nutrition Journal found that participants who ate half a fresh avocado with lunch reported a 40 percent decreased desire to eat for hours afterwards. What’s more? The trendy toast topping is also loaded with unsaturated fats, which seem to prevent the storage of belly fat, as well as satiating fiber and free-radical-killing antioxidants.
Instead of dragging yourself to the coffee pot when your alarm goes off, open all the blinds! A study in PLoS One found that when obese women were exposed to at least 45 minutes of morning light (between 6–9 am) for 3 weeks, it resulted in reduced body fat and appetite. Researchers think it’s because the morning sun helps synchronize your metabolism to burn fat more efficiently. For more easy ways to burn more calories, check out these 55 Best-Ever Ways to Boost Your Metabolism.
To jumpstart your weight loss, we’ve selected some nutritious eats, like salsa, that are lower-calorie substitutes for less healthy choices (we’re looking at you, ketchup). And other weight loss foods, such as watermelon, contain certain compounds that have been scientifically proven to reduce the size of your waist and help reduce body fat. Scroll down below for a list of a few dozen best weight loss foods, and get even more health-conscious inspiration from this list of these dinner ideas that don’t need a recipe!
Common sense states if you want to lose weight, then you shouldn’t have a large meal not long before going to bed. And now we have additional research to back up that hypothesis. A study published in the journal Obesity followed two groups of overweight women with metabolic syndrome on identical 1,400-calorie weight loss diets for three months. While both groups consumed 500 calories at lunch, one group consumed 700 calories for breakfast and a 200-calorie dinner (the “big breakfast” group), while the other group ate 200 calories at breakfast and 700 calories at dinner (the “big dinner” group). Even though the nutrient content of the meals was exactly the same for both groups, after three months the big breakfast group lost about two and a half times more weight than big dinner group.
A study in the journal Cell  found that our gut microbes are just as affected by changes to our circadian clock as we are. When we shift our sleep-wake cycles, our gut flora changes, and beneficial bacteria are replaced by the growth of bacteria that have been linked to obesity and metabolic disease. When traveling across different time zones, it’s important you travel armed with healthy, fiber-rich snacks your gut will love.
Before you begin the habit of refilling your water bottle several times a day, make sure yours isn’t laced with BPA. A Harvard study found that adults with the highest concentration of BPA in their urine had significantly larger waists and a 75 percent greater chance of being obese than those in the lowest quartile. No wonder why drinking out of plastic bottles is one of our 40 Bad Habits That Make You Fat! To avoid weight gain, make sure your bottle is BPA-free and be particularly wary of plastics that sport a #7 recycling symbol on them, which is an indicator that BPA may be present.

If you just can’t shake those belly-bloating sugar cravings, try tyrosine—a building block of protein. It has been shown to prevent that yearning for the sweet stuff by encouraging the brain to release dopamine and another neurotransmitter, norepinephrine. In other words, eating more tyrosine (which can be found in eggs, spirulina, certain cheeses such as Parmesan, Gruyère, Swiss, and Romano, milk, sesame seeds, beef, and bacon) helps fend off those harmful sugar cravings that make your belly fat.

A study in the American Journal of Epidemiology found that dealing with work-, finance-, or relationship-related stress can pack on the pounds. When you’re stuck in a hair-pulling situation, your body releases the stress hormone cortisol, which stores abdominal fat. Next time you find yourself overwhelmed, try these awesome ways to strip away stress.
Sugar must be the last thing you should think of if you want to lose weight. Or probably, it must be something you should not think of at all in the first place. In a study conducted by the Harvard School of Public Health, it was found that consumption of beverages sweetened with sugar can cause weight gain in women (10). Another study had discouraged the consumption of sugar for a healthy lifestyle (11). According to the University of California, San Francisco, sugar can be worse than fat when it comes to harmful health effects (12).
^{People exercise for an average of 34 minutes longer with a friend than they do when they hit the gym solo, according to the American College of Sports Medicine. And the longer you sweat, the more quickly you’ll reach your goals! Looking for a healthy way to refuel after your weight room session? Whip up a quick and delicious protein shake for on-the-go nutrition.}
Spirulina is a powdered, high-protein seaweed supplement. The dried stuff is about 60 percent protein, and, like quinoa, it’s a complete protein, meaning it can be converted directly into muscle in the body and is thus a great weight loss tool. A tablespoon of the blue-green algae delivers 8 grams of metabolism-boosting protein for just 43 calories, plus half a day’s allotment of vitamin B12, which in and of itself can give you more energy and boost your metabolism. Try tossing some spirulina into a smoothie and watching the pounds melt off. For more skinny smoothie ideas, check out this list of smoothie recipes for weight loss!
Even if you’re stocking up on fruits and veggies, buying inorganic may be doing your body a disservice, thanks to the pesticides. “They have been shown to poison the mitochondria so it cannot burn fuel,” says Walter Crinnion, N.D., chairman of the environmental medicine department at Southwest College of Naturopathic Medicine in Phoenix in Weight Loss Tricks You Haven’t Tried. “Fuel that is not burned turns to fat.” If you’re worried about breaking your budget at Whole Foods, start by stocking up on these 17 Cheap Organic Foods You Must Buy.

Tart cherries are grown exclusively in Michigan, but if you’re able to get your hands on them there is strong evidence to suggest they can help you achieve your weight loss goals. Need proof? Researchers at the University of Michigan conducted a 12-week study that found that rats fed tart cherries showed a 9 percent belly fat reduction over those fed a standard western diet. Scientists believe this is because tart cherries are especially high in anthocyanins, a type of flavonoid with strong antioxidant activity. These and other flavonoids found in tart cherries have also been shown to have anti-inflammatory effects.

Speaking of flavonoids, the waist-whittling compounds also exist in higher concentrations in red fruits such as watermelon, Pink Lady apples, and plums, meaning they also have the power to induce weight loss. In fact, a 2016 study in the journal BMJ found that people who eat a diet rich in flavonoid-heavy food tend to gain less weight, which could be promising seeing as many people tend to put on pounds as they age. In addition, anthocyanin, a specific flavonoid compound that gives red fruits their color, has been shown to reduce fat-storage genes.

The best diet for losing weight is Weight Watchers, according to the experts who rated the diets below for U.S. News. Volumetrics came in second, and the Flexitarian Diet, Jenny Craig and the vegan diet were third on this overall weight loss ranking list, which takes into account short-term and long-term weight loss scores. Some other diets performed as well or better in our rankings for enabling fast weight loss, but long-term weight loss is more important for your health.