As a registered dietitian who counsels private clients (and who has experienced my own weight-loss journey), I understand that desire. But unlike gradual weight loss, rapid weight loss can be dangerous and ultimately counterproductive when it comes to shedding unwanted fat. But how? What’s the difference between losing 15 pounds in two weeks versus two months? A lot.

Who says you shouldn’t eat less than 1800 kcals? Under normal circumstances, the minimum is 1200 for women, 1500 for men, and height and weight have no bearing – these are what the body requires to avoid starvation. This diet is, however, for 7 days only, it is not intended as a long-term weight-loss strategy, so 6 days at less than 1500 won’t do you any harm. You don’t say how tall you are, or what you do for a living, which would also have a bearing on your long-term weight-loss plans. Good luck with it, anyway – it’s not easy


Listen up: Skipping meals will not make you lose weight faster. If a hectic day makes a sit-down meal impossible, stash an energy bar or a piece of fruit in your car or tote, keep snacks in your office desk drawer, and make a point of getting up to grab a nosh — anything that will keep you from going hungry! 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.
Prior to WL, an ambulatory run-in period was imposed for each subject to insure stabilization of body weight (± 2 kg during 4 weeks). During the body weight stabilization, a three-day food dietary record was used to determine an individual’s daily food and beverage consumption to estimate their total daily caloric intake (2 weekdays and 1 weekend day). The subjects were randomly divided (according to age, gender and BMI) into two groups (rapid WL and slow WL). Rapid WL and slow WL, based on the lost weight (at least 5 %), were defined over a period of 5 weeks and 15 weeks, respectively (18). The prescribed calorie-restricted diet contained 15% protein, 30% to 35% fat, and 50% to 55% carbohydrate, on average, in order to provide WL. In general, the meal plans included 3 main meals (breakfast, lunch, and dinner) and three snacks (mid-morning, mid-afternoon, and bedtime), and low saturation and trans fats, cholesterol, salt (sodium), and added sugars. All diets were designed according to Dietary Guidelines for Americans, 2010 (21). Low-calorie diets produced an energy deficit of 500 to 750 and 1000 to 1500 kcal per day for slow and rapid WL, respectively. At the end of the study, anthropometric and biochemical assessments were conducted on the individuals (18 individuals in rapid WL and 18 individuals in slow WL), who reached the desired WL. All subjects provided their written informed consent, and the study protocol was approved by the ethics committee of Jundishapur University of Medical Sciences (Act No. IR.AJUMS.REC.1394.212).

There was also weight loss supplements that wouldn’t kill you, but didn’t really work either. Green coffee, raspberry ketones and grapefruit extract all come to mind. They sound great, but they all turned out to be pure hype. One substance, though seems to have stood the test of time — green tea, with traditional Asian medicine touting the weight loss effects for thousands of years.


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.
“If I had to pick one food for weight loss, I would choose oatmeal. It’s a whole grain, high-fiber carbohydrate that sticks to your ribs, so it keeps you full and satisfied. Eating it also leads to a slow rise in blood sugar, which has been shown to keep insulin levels from spiking, leading to less fat storage. The key with oatmeal is how to make it so it’s not a calorie bomb. I recommend making it with nonfat milk in place of water, stirring in chopped raw nuts or natural nut butter, and topping with fresh or frozen fruits. If you need some added sweetness, a drizzle of maple syrup should do it. — Jessica Fishman Levinson, MS, RDN, CDN, culinary-nutrition consultant and founder of Nutritioulicious
While not every researcher believes that green (or other) tea drinking is a “magic bullet” for weight loss, every weight loss expert would agree that flooding your system with water or drinking tea versus eating a candy bar or drinking soda can help move the digestion process along quickly and perhaps distract you from munching snacks that aren't healthy. Regardless of whether it's magical or not, it's a good idea.

Unlike traditional green tea, matcha preparation involves covering the tea plants with shade cloths before they’re harvested. This triggers the growth of leaves with better flavor and texture, which are hand selected, steamed briefly to stop fermentation, then dried and aged in cold storage, which deepens the flavor. The dried leaves are then stone-ground into a fine powder.
“Your body begins to work differently. This study proves that small amounts of nourishment throughout the day are better than the same amount of food concentrated in three big sittings. If we feed the body at regular intervals we send a signal to the body that it doesn’t have to store calories. Conversely, when we skip meals we send just the opposite signal for the body to store calories, creating a negative effect on the metabolism.” — Dr. Wayne Scott Andersen, co-founder and Medical Director at Take Shape For Life
Consequently, researchers have widely discredited the hCG diet, which involves using hCG injections, pellets, sprays, or drops, and consuming  as few as 500 calories daily. The diet is problematic not only because there’s a lack of research on hCG supplements, but also because  the calorie requirement is dangerously low, potentially leading to nutrient deficiencies, fatigue, hormone imbalances, blood clots, and other issues. Thus, most experts agree the hCG Diet is not safe for anyone, the Mayo Clinic notes. (35)

Invest in a pedometer and track your steps each day. The goal is to walk at least 10,000 steps -- the equivalent of 5 miles -- daily to thwart weight gain (and promote weight loss). Challenge yourself to increase your steps each day, even if you can't get up to 10,000. Every step counts; remember that your goal is simply to improve your fitness level.


Get on with the Mediterranean diet and include some seaweed or Kelp into your meals. Prized for its high levels of iodine, kelp helps to create the thyroid hormones in your body. These regulate your metabolic rate – the rate in which your body burns fat. It also contains several minerals which have been found to assist the breakdown of belly fat and relieve water retention. Seek it out in Japanese supermarkets or pick up from health food stores in a supplement form.
If your favorite foods fall into the list of forbidden fruit, you’re even more likely to fall off the wagon. Giancoli gives the example of diets that cut out coffee: “It’s ridiculous. There’s a lot of research that coffee is fine. Coffee’s been redeemed.” The Mayo Clinic goes even further, saying: “Caffeine may slightly boost weight loss or prevent weight gain.”
Did bikini season sneak up on you? Is your soon-to-be worn wedding dress still just a touch too tight? Did a last-minute invite for a beach getaway come your way? You're a lucky dog – and a panicked one too because you want to drop pounds, and fast. These 10 diets are likely to help you lose significant weight within a year, according to a panel of experts who reviewed 38 plans for the U.S. News Best Diets rankings. Just remember: Short-term weight loss is markedly different from long-term weight loss, which is more important for your health.
When it comes to condiments, mustard is about as healthy and low cal as it gets, and the pungent yellow stuff that contains about 5 calories per teaspoon has also been found to stimulate weight loss. Scientists at England’s Oxford Polytechnic Institute found that eating just one teaspoon of mustard can boost the metabolism by up to 25 percent for several hours after it’s been consumed. Researchers attribute this to capsaicin and allyl isothiocyanates, phytochemicals that give the mustard its characteristic flavor. So instead of reaching for the sickeningly sweet ketchup, make sure you have mustard on hand at your next BBQ.

“Preliminary evidence suggests that if someone is already eating a low-fat, portion-controlled diet and then they get three servings of nonfat milk a day, they lose more weight than someone who eats the same number of calories but doesn’t have the milk,” Somer says. The theory is that calcium may inhibit the storage of fat, and it seems that the weight loss comes largely from the midsection.

Ultimately, weight loss for the long-term 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!
What's more trustworthy than a diet built by experts from the Mayo Clinic? Created by doctors, nutritionists, and all-star chefs, the plan has a few phases: In the first, you should lose 6 to 10 pounds in two weeks. After that, you can expect to lose 1 to 2 pounds a week until you reach your goal weight. You're also given plenty of resources and advice to help you keep the weight off.
Not much of a coffee drinker? Tea is also a natural diuretic, and types of herbal tea such as dandelion or fennel root can also lend a hand. In fact: When a recent study compared the metabolic effect of green tea (in extract) with that of a placebo, researchers found that the green-tea drinkers burned about 70 additional calories in a 24-hour period.
Of course, ladies also lose abdominal weight quickly -- they just tend to have less of it. "Women with excess fat around the middle will lose it more or less as readily as men," says upwave review-board member David Katz, MD, MPH, the founding director of the Yale-Griffin Prevention Research Center at the Yale University School of Medicine. "Men are more prone to gain weight around the middle." 

Stephen Colbert may be on to something. UCLA Center for Human Nutrition researchers divided study participants into two groups, each of which were fed a nearly identical low-cal diet for 12-weeks. The only difference between the groups was what they were given to eat as an afternoon snack. One group ate 220-calories of pretzels while the other group munched on 240-calories worth of pistachios. Just four weeks into the study, the pistachio group had reduced their BMI by a point, while the pretzel-eating group stayed the same, and their cholesterol and triglyceride levels showed improvements as well.
To reach your get-lean goal, you must also follow a get-lean diet, filled with the best foods to burn fat. Why? Even if you work out hard for an hour every day, that still leaves 23 more hours for you to wreck all your hard work in the gym with just one slip-up: a measly handful of chips, a beer with the guys, or a burger at lunch. Diet is a huge, so to speak, part of the fat-loss equation. It's the backbone of your entire plan, the foundation of a hard body.
Getting enough protein every day, whether you’re in a quick-fix or long-term mindset is important for keeping your muscles and metabolism healthy throughout weight loss. Make sure you’re having some chicken breast, lean ground turkey, fish, seafood or tempeh that’s the size of a deck of cards at every meal. When snacking, have 2 eggs, 1/4 cup of nuts, or 3/4 cup of Greek yogurt or cottage cheese to meet your protein needs and stay full and feel slim.
Add a cup of low-fat milk, a part-skim mozzarella stick, or a half cup of low-sodium cottage cheese to breakfast, and you may have a belly-busting win. While lots of research links calcium with lower body weights, results from a 2014 study suggest that calcium-containing foods may reduce waist circumference in those genetically predisposed to carrying weight in their midsection.
All beans are high in fiber, which is your friend when you're trying to lose weight because it helps you feel fuller longer, thus controlling hunger. Eating beans and legumes has also been linked with various other health benefits, including lowering blood pressure, reducing LDL cholesterol and reducing risk of cardiovascular disease. Beans are fairly low in calories and deliver protein as well. Try them in homemade veggie burgers, soups and salads.
This workout plan is between 4 and 12 weeks long, depending on how much weight you want to lose. Follow this workout plan and practice healthy eating and portion control, which means eating the right food in the right quantities at the right times, and you’ll be able to burn off at least a pound or two of body fat each week. But remember, you’ll also be doing resistance training to gain muscle in all the right places, so you’ll want to keep track of your progress with body measurements and, if you can, body fat percentage.

Avocados are rich in monounsaturated fatty acids, dietary fiber, potassium and phytochemicals. People who eat avocados tend to have lower BMI, body weight and waist circumference than people who skip this green superfood, per a study in Nutrition Journal. While avocados are higher in calories than other fruits and vegetables, their satisfying fat and fiber combo may help you slim down. Add some to your salad, sandwich or taco night for a burst of creaminess and flavor.

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When it comes to weight loss, there is no substitute for healthy eating, reduced calories and increased exercise. Replace sugary beverages with unsweetened green tea to reduce calories, and enjoy drinking it for its possible cardiovascular benefits, but avoid costly and possibly dangerous supplements. Green tea can be enjoyed hot or iced and can be brewed with herbal or fruit teas for interesting alternatives to plain water and healthy alternatives to sugary beverages.
Greek yogurt is an extremely satiating breakfast or snack, thanks to its thick, creamy texture and a whopping 17 grams of protein (nearly three times more than is in an egg, in fact). A study from the journal Appetite found that people who ate a high-protein yogurt snack three hours after lunch felt fuller and ate dinner later than the other participants. And on top of that, other studies suggest that the acids produced during yogurt fermentation might help increase feelings of fullness.

Coconut oil is having a moment right now: it can be used as a butter or olive oil substitute in everything from baked goods to salad dressing, and can even be used as an alternative to milk in lattes (yes, really). Sass is a fan of the heart-healthy oil whipped into smoothies, and you can also use it to sauté veggies, sear fish, or as an olive oil replacement in soups and stews. (It's also a must-add to your beauty routine, and makes a wonderful natural moisturizer for skin and hair.)
Loads of research demonstrates people who log everything they eat — especially those who log while they're eating — are more likely to lose weight and keep it off for the long-haul. Start tracking on an app like MyFitnessPal when the pounds start sneaking up on you. It'll help you stay accountable for what you've eaten. Plus, you can easily identify some other areas of your daily eats that could use a little improvement when it's written out in front of you.
Brazilian scientists found that participants who consumed three cups of the beverage every day for a week had fewer markers of the cell damage caused by resistance to exercise. That means that green tea can also help you recover faster after an intense workout. In another study—this one on people—participants who combined a daily habit of four to five cups of green tea each day with a 25-minute workout for 12 weeks lost an average of two more pounds than the non-tea-drinking exercisers.
Catechins are also credited for green tea’s cancer-fighting potential. These antioxidants have the ability to block the action of molecules called free radicals, which can cause changes in healthy cells that sometimes lead to cancer. But there’s no solid proof yet that the catechins in green tea help to prevent cancer in humans, despite some promising studies in test tubes and animals.
One small 2018 study published in the International Journal of Sport Nutrition and Exercise Metabolism found that matcha green tea drinks can enhance exercise-induced fat oxidation in women following a 30-minute walk. But, the authors were also quick to point out that "the metabolic effects of matcha should not be overstated" when related to weight loss.
Kale gets all the love (and it's a fantastic option, too), but if you prefer milder romaine lettuce as your salad base and it helps you eat more of it, go for it. When fruits and veggies were examined for their weight-loss potential, one that came out on top was leafy greens, per 2015 research in PLOS Medicine. Over a four-year period, eating a serving per day (that's two cups) was linked to about a half pound of additional weight lost. The veggies that helped with weight loss, like lettuce, tended to offer fiber and have a low glycemic load, which aids fullness, controls blood sugar and discourages your body to store fat, the study points out. Spinach, kale or head lettuce are other good options.
This double-blind clinical trial study was conducted on 42 obese and overweight individuals (25 < BMI < 35). Participants were selected from those, who referred to a nutrition clinic (Ahvaz, Iran). Participants were screened based on the inclusion and exclusion criteria. Inclusion criteria were lack of physical activity, no smoking, no alcohol drinking, no usage of herbal supplements and vitamins, and lack of weight changes in the last 6 months. Exclusion criteria included pregnancy, breastfeeding, use of drugs that effect metabolism, lipid and glycemic profile, eating disorder, diabetes, cardiovascular disease, kidney problems, thyroid, digestive, respiratory diseases, and cancer. Participants consuming more than 300 mg of caffeine daily (described as caffeine users) were excluded from the study (20). The level of physical activity was assessed weekly by phone. The subjects, who had moderate or various physical activities, were excluded from the study.
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