Big-box stores such as Costco or Sam’s Club are great money-savers, but frequenting them to buy groceries can be bad news for your fitness goals. That’s because a 2015 study in the journal Appetite  found that the larger the bottle, bag, or box the food comes in, the larger we think the serving size should be. To come to that conclusion, researchers surveyed more than thirteen thousand people and found that when confronted with larger packages of cola, chips, chocolate, or lasagna, the shoppers tended to want to serve themselves larger portions.
As it turns out, almonds aren’t the only superstar nuts around. Studies have shown pistachios aren’t bad to snack on either. UCLA Center for Human Nutrition researchers divided study participants into two groups, each of which were fed a nearly identical low-cal diet for three months. One group was given 220-calories of pretzels as an afternoon snack, while the other sect munched on 240-calories worth of pistachios. About a month into the study, the pistachio group had reduced their BMI by a point and improved their cholesterol and triglyceride levels, while the pretzel-eaters stayed the same.
Although adding an exercise routine to your diet overhaul will help you burn fat more quickly than a dietary intervention alone, one JAMA study found that obese patients who change their diets first and begin exercising six months after their diet change will lose the same amount of weight after 12 months as those participants who eat healthier and exercised over the course of the whole year. In short: don’t put off your weight loss goals just because you don’t want to exercise. Change your diet today by eating more weight loss foods, exercise later, and you can still lose weight.

Though we singled out quinoa above, whole grains in general (we’re talking cereal, rice, pasta, and more) are conducive to weight loss, especially when they’re used in place of refined—white—grains. In fact, a study published in the American Journal of Clinical Nutrition found that substituting whole grains for refined grains in the diet increases calorie loss by reducing calories retained during digestion and speeding up metabolism. Unlike refined grains, whole grains are packed with satiating, heart-healthy fiber.
Napping may be an easy way to catch up on some missed shut-eye, but dozing off in the middle of the day does nothing to aid weight loss. In fact, research has found that people burn fewer calories when they sleep during the day and log their waking hours after the sun’s gone down. To come to this finding, researchers at the University of Colorado at Boulder studied 14 healthy adults for six days. For two days, study participants slept at night and stayed awake during the day, then they reversed their routines to mimic the schedules of night owls. When participants slept during the day, researchers found that they burned 52 to 59 fewer calories than they did while catching their Zzzs in the evening—likely because the schedule messed with their circadian rhythm, the body’s internal clock that plays a major role in metabolism function. If your circadian rhythm is out of whack, a separate study by University of Colorado Boulder researchers suggested spending a weekend in the wilderness to get it back on track.
Though you may think that strong willpower is a necessary trait to overcome down-time grazing, experts say that your success is more dependent on your food environment than anything else. “If you happen to get bored and there is nothing but healthy food available in your house, you likely won’t choose to eat it unless you’re actually hungry,” says Jennifer Neily, MS, RDN of Neily on Nutrition. Most people don’t have the urge to eat celery sticks; cookies, however, are a different story. Heather Mangieri, RDN agrees, adding, “You can’t eat what’s not there, so make sure when you open the pantry, you aren’t tempted with the sugary, salty, fatty foods that most people choose when eating ‘just to eat.’ Instead, stock your refrigerator with fresh vegetable slices and healthy whole foods that will be easier to pass on if you’re not really hungry.”
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.

Not to be outdone, oolong tea—a Chinese beverage—can help those who drink it shed up to a pound per week. According to a study in the Chinese Journal of Integrative Medicine, participants who regularly sipped oolong tea lost six pounds over the course of six weeks. What’s more? The tea’s antioxidants are thought to remove harmful free radicals and improve bone health.
Yes, you can eat dark chocolate to lose weight. A study among women with normal weight obesity (or “skinny fat syndrome”) who ate a Mediterranean diet that included two servings of dark chocolate per day showed a substantial reduction in waist size than when on a cocoa-free meal plan. Researchers attribute dark chocolate’s weight loss abilities to flavonoids, heart-healthy compounds in the sweet treat that the scientists at Harvard say can reduce the risk of diabetes, heart disease, and mortality. Like nuts, dark chocolate has also been found to induce satiety. When reaching for chocolate, just make sure you choose a bar with at least 70 percent cacao. Anything less contains more belly-bloating sugar and a significantly reduced flavonoid content.
Artichokes are incredibly filling—in fact, they are one of the highest-fiber vegetables, says Sass. A single boiled artichoke contains a whopping 10.3 grams of fiber—almost half the recommended daily amount for women. To curb your appetite before a meal, Sass suggests enjoying the veggie as a pre-dinner appetizer: try them in a refreshing salad with edamame and asparagus, or make homemade salsa with artichoke hearts, tomatoes, olives, and red onions.
Drinking enough water can help you stay slim, too. Research from the American Chemical Society in Boston found that having two 8-ounce glasses of water before a meal while also reducing portion sizes could help you lose weight and keep it off. Not to mention, water fills you up, curbing your appetite: "In addition to slightly boosting your metabolism, drinking water before meals has been shown to help you eat less without trying," says Sass.

21. Keep it simple. "I take a minimalist approach to nutrition: My diet consists of lean protein (chicken breast, egg whites, ground turkey), complex carbs (quinoa, sweet potatoes, oatmeal), healthy fats (coconut oil, almonds, avocados), and leafy green veggies. I eat as clean as I can—locally-grown vegetables, organic when possible, and minimally-processed everything."
Good news for carb lovers: Scientists discovered an easy way to slim down any bowl of rice by as much as 60 percent! And the best part is that you don’t need a fancy lab or a PhD. to make the slimmed-down dish. Here’s how to whip it up: Add a teaspoon of coconut oil and a half cup of non-fortified white rice to a pot of boiling water. Cook it for about 40 minutes, stick it in the refrigerator for 12 hours and enjoy the rice either cold or reheated. How does such a simple cooking hack—that adds fat, no less—slash calories? When the rice begins to cool, its glucose molecules form tight bonds called “resistant starch.” This type of starch, as the name implies, is resistant to digestion, meaning that the body is not able to absorb as many calories or as much of the glucose (a nutrient that’s stored as fat if it’s not burned off) from each molecule. While you may be hesitant to add the oft-vilified oil to your pot, it actually plays an integral role in the process. As the rice cooks, the fat molecules find their way into the rice and act as an additional digestion barrier. Best of all, the research team found that reheating the rice didn’t change the levels of resistant starch (as it does with pasta and potatoes), deeming this calorie-slashing cooking hack safe for leftovers, too.
There’s no denying dinner rolls are delicious, but you don’t need to take the “breaking bread” aspect of a meal so literally. Instead, steer clear of the bread basket and munch on a leafy green salad instead. If the carb-heavy starter is still too tempting to avoid, try nibbling on a high-fiber snack before sitting down to eat, such as a handful of nuts. The fiber found in nuts will keep you satiated, meaning you won’t be as easily induced to reach for the bread and butter, and you’ll be swapping out unhealthy fats for healthy ones. It’s a win-win!
If you have a big celebration or date coming up, you might think it makes sense to “save” your calories for when it’s time to let loose, but this technique is rarely effective and could actually be hindering your ability to lose weight. “Although this makes sense in theory—consuming fewer calories total per day—it rarely works out as cleanly as we like,” Lisa Hayim spelled out for us in The 30 Worst Diet Mistakes You’re Making. “By the time you get to the date, and have a drink or two, the feelings of extreme hunger rush in, and you’re grabbing for whatever you can get your hands on, which is usually foods high in calories and fat. You’re so hungry, you may even end up consuming more than a day’s worth of calories in one sitting! Plus, with alcohol in your system, your body is less able to efficiently metabolize the calories,” explains Hayim. “Instead, consume normal meals throughout the day, arrive at your date cool, calm, and collected, and enjoy your cocktail and eat responsibly.”
中文: 在一周内快速减肥, Deutsch: In weniger als 7 Tagen abnehmen, Español: bajar de peso en menos de 7 días, Français: perdre du poids en moins de 7 jours, Bahasa Indonesia: Menurunkan Berat Badan Kurang Dari 7 Hari, Italiano: Perdere Peso in Meno di 7 Giorni, Русский: сбросить вес менее чем за 7 дней, Português: Perder Peso em Menos de Sete Dias, العربية: فقدان الوزن في أسبوع, Nederlands: In één week afvallen, Tiếng Việt: Giảm cân trong vòng 1 tuần, ไทย: ลดน้ำหนักใน 1 อาทิตย์, 日本語: 1週間で体重を落とす
Consume more vegetables, healthy fats, and lean protein. Shape your meals so they contain one protein source, one low fat source and one low carb vegetable source. Your carb intake should be in the recommended range of 20-50 grams per day.[1] Don't feel that you must restrict yourself to a small number of foods. You can enjoy a wide variety of healthy foods that provide a large array of nutrients.

“Tahini is an oft-forgotten option for nut and seed butters, but it sits front and center in my fridge because it delivers major creaminess to sauces and smoothies and packs a powerful flavor punch,” says Willow Jarosh MS, RD co-owner of C&J Nutrition. “Although some advise against eating the spread because of its high omega 3:6 ratio, the super high intake of omega-6s in the average American’s diet isn’t due to things like tahini—it’s mostly from not eating a variety of fats or consuming the majority of fats from fried foods and packaged snacks. As long as you’re also eating foods rich in omega-3s, your end-of-day ratio should be nothing to worry about. Plus, tahini is loaded with tons of healthy nutrients like copper, which helps maintain anti-inflammatory and antioxidant responses in the body. It also provides six percent of the day’s calcium in just one tablespoon.”
All meals are important, but breakfast is what helps you start your day on the right track. The best, heartiest breakfasts are ones that will fill you up, keep you satisfied, and stave off cravings later in the day. Aim to eat anywhere between 400 and 500 calories for your morning meal, and make sure you're including a source of lean protein plus filling fat (e.g., eggs, unsweetened Greek yogurt, nuts, or nut butters) and fiber (veggies, fruit, or 100% whole grains). Starting your day with a blood sugar-stabilizing blend of nutrients will help you slim down without sacrifice.

Speaking of things you find in the sea, oysters have also been shown to contribute to weight loss thanks to their impressive zinc content. One study found that obese people who consumed 30 milligrams of zinc per day—the equivalent of just six raw oysters—had lower BMIs, weighed less, and showed improvements in blood cholesterol levels. If oysters aren’t your thing, spinach, pumpkin seeds, and mushrooms are also excellent sources of zinc.
Decision fatigue is real, and it could be hindering your ability to shed some pounds. A study published in Social Science and Medicine  found those who have high levels of what’s called “skill discretion”—i.e., they exercise control by getting things done themselves—tended to have lower BMIs. In contrast, those who are constantly deciding on courses of action for others may eventually come down with decision fatigue and make ill-informed choices, such as ordering that piece of cheesecake for dessert.
Make instant oatmeal and add in dried fruit and nuts for a healthy, fiber packed breakfast. Add 1 ⅓ cup fat-free milk to two packets of instant oatmeal (look for no sugar added oatmeal). Cook it according to the package directions in the microwave or the stove. Once it's cooked, mix in two tablespoons dried cranberries and one tablespoon chopped walnuts.
Portions, my friend, portions. You can’t even think of losing weight if you don’t let go of your large plate. It’s plain common sense – reducing the size of your plate means eating less, and eating less means fewer calories. Usually, when we are dining, we tend to eat more than what is required – a terrible habit most of us have unknowingly cultivated. Cut the portions in half and ensure you are choosing smaller portions. A study conducted at The Pennsylvania State University talks about research that has shown the relation between large portions and obesity. It also says that for weight management, you can eat larger portions of low-energy-dense foods (2).
Though you may give yourself a pat on the back for passing on that slice of chocolate cake you’ve been craving for dessert, you’re actually doing yourself (and your waistline) a disservice in the long run. According to a study in the International Journal of Eating Disorders, when you resist food, your body actually experiences more cravings for whatever it is you aren’t getting. Saying “no” to a sweet treat or slice of pizza wires our brains to view forbidden foods as rewards, setting us up for cravings that are hard to satisfy, so give yourself a break and indulge every now and again.
Eggs are rich in high-quality protein, fats and essential nutrients, like vitamin D and choline. It's the protein, and the time of day we tend to eat them, that especially makes them a powerhouse for weight loss. Eating a high-protein breakfast promotes weight loss, because protein increases satiety while regulating hunger and appetite hormones, helping fend off your hunger until lunchtime. One study found that eating eggs for breakfast left people feeling more satisfied than those who had bagels-which helped them eat less throughout the day.
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