“Oolong, or ‘black dragon,’ is a kind of Chinese tea that’s packed with catechins, nutrients that help promote weight loss by boosting your body’s ability to metabolize fat. A study in the Chinese Journal of Integrative Medicine found that participants who regularly sipped oolong tea lost a pound a week, without doing anything else to change their diet or exercise habits.” — Kelly Choi, author of  The 7-Day Flat-Belly Tea Cleanse
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.

Although they're best known for containing potassium, bananas are also a great source of resistant starch, a type of starch that's important for weight loss. Your body digests resistant starch slowly—helping you feel full for longer—while simultaneously encouraging your liver to switch to fat-burning mode. And no need to wait for them to become completely ripe; bananas actually contain more of this calorie-torching ingredient when they're still a little green.
Quinoa is a unique whole grain because it’s a complete protein (about 7g per serving) and high in fiber (6g). Dietary fiber actually binds to fat and cholesterol, helping your body absorb less of the two. The ancient grain is also rich in eight essential amino acids, and vitamins and minerals like magnesium, calcium, phosphorous, iron and B12—both of which are crucial to energy levels. “Quinoa is great eaten alone, mixed with raw veggies as a cold salad, or warm like a pilaf,” Zeratsky says. It’s a high-quality carb that scores low on the glycemic index, so you won’t experience a sharp rise and fall of blood sugar.
Another danger of losing weight too quickly, as Dr. Hensrud points out, is that you are probably not losing just fat. A normal, healthy rate of weight loss is one to two pounds per week. Because it's difficult for your body to burn large numbers of fat calories in a short amount of time, the weight you lose could be made up of water or muscle (lean tissue).
As for the health benefits of green tea, research does show that it may help protect against cardiovascular disease by preventing the oxidation of LDL cholesterol and reducing blood clotting. A meta-analysis of 13 randomized controlled trials, showed that it significantly lowered blood pressure, as well as LDL cholesterol and total cholesterol. So, adding a few cups of unsweetened green tea each day may be beneficial for heart health.

Both Weight Watchers and Noom provide lots of guidance. If you’re more of a self-starter — someone who just needs to be pointed in the right direction — The Mayo Clinic Diet provides pure resources. Picking up the entertaining, densely informative book is the only associated cost. You can also get the app for about half the cost of WW Mobile, but we didn’t find it as useful.


Also, men tend to lose weight where they need it most (read: belly), so it's often more immediately noticeable when overweight men start trimming down than when women do, as ladies' fat stores are typically more spread out, which is partly why they tend to lose weight at a slower pace than guys. Even basic, regular exercise -- ideally 30 to 60 minutes a day -- tends to reduce abdominal obesity, even if guys don’t technically lose weight.
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.
The results of the current study showed that both protocols of rapid WL and slow WL caused a reduction in waist circumference, hip circumference, total body water, body fat mass, FFM, LBM, and RMR. Greater reduction of waist circumference, hip circumference, and FFM was seen with slow WL and greater reduction of total body water, LBM, and RMR was seen with rapid WL. It seems that the effect of slow WL in maintaining body water and LBM (as a metabolic tissue) was more significant than rapid WL.
Of the forty-two participants assigned to the trial, thirty-six subjects completed the study (n = 18 in slow WL group and n = 18 in rapid WL group). During the study, 3 individuals in the rapid WL group (medication consumption and discontinued) and 3 in the slow WL group (disinclination, medication consumption, and migration) were excluded (Figure 1). No significant side effect in the two study groups was detected.

To prep his patients for success, Dr. Seltzer tells them to plan around a large evening meal by eating a lighter breakfast and lunch—NBD since most people who eat a meal before bed tend to wake up feeling relatively full, he says. Research suggests balanced bedtime meals may also promote steady next-day blood sugar levels, which also helps with appetite regulation.
“When you’re anxious, your body feels like it’s under a tremendous amount of stress all the time. This is why anxiety is a powerful trigger for weight gain. Two of the most proven cures for anxiety are exercise and spending time in nature. Combine both with an outdoor run or bike ride and race away from the anxiousness. Making this habit part of your lifestyle can help you stay lean for life.” — David Zinczenko, author of the  Zero Belly Cookbook
Before you head out to dinner, pour yourself a cup of green tea. The active ingredient in green tea, EGCG, boosts levels of cholecystokinin, or CCK, a hunger-quelling hormone. In a Swedish study that looked at green tea’s effect on hunger, researchers divided up participants into two groups: One group sipped water with their meal and the other group drank green tea. Not only did tea-sippers report less of a desire to eat their favorite foods (even two hours after sipping the brew), they found those foods to be less satisfying.

The results of the current study showed that both protocols of rapid WL and slow WL caused a reduction in waist circumference, hip circumference, total body water, body fat mass, FFM, LBM, and RMR. Greater reduction of waist circumference, hip circumference, and FFM was seen with slow WL and greater reduction of total body water, LBM, and RMR was seen with rapid WL. It seems that the effect of slow WL in maintaining body water and LBM (as a metabolic tissue) was more significant than rapid WL.
Good news for java lovers: The caffeine in coffee could speed up your metabolism and help your body burn slightly more calories (about 26 per cup). A study in Physiology & Behavior found that the average metabolic rate of people who drank caffeinated coffee was 16% higher than those who drank only decaf. Just be mindful of how much cream and sugar you add to your cup, which could offset any health benefits the beverage provides.
Everyone’s body is different when it comes to digesting some gas-forming foods, but there are a few you should be wary of: It’s best to avoid beans and cruciferous veggies (think cabbage, Brussels sprouts, cauliflower, and broccoli) for a couple of days if you want to look slimmer. Choose lean proteins like chicken and fish or, if you’re vegetarian, go for small amounts of nuts and seeds for protein. Pair with non-gassy vegetables like asparagus, spinach, and cucumber to help prevent bloat.
You don’t need to bust out the measuring cups to properly portion out your food: A serving size of meat is roughly the size of a deck of cards or the size of the palm of your hand. Your entire fist should be the size of a serving of veggies (although the more, the better!). A serving of fat, such as butter or coconut oil, should be the size of your thumb. Your carb serving should be no bigger than what can fit in your cupped hand. For other ways to eyeball your proper serving sizes, check out What the Perfect Food Portion Sizes Actually Look Like.
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“For one, fiber-packed foods are a great way to fill up and control hunger, mange blood glucose levels, and promote gastrointestinal health,” says Katherine Zeratsky R.D.N., L.D., at the Mayo Clinic. “Fruits and veggies are rich in fiber and mostly water, which makes them heavy (your stomach feels weight) and keeps you fuller longer, while being low in calories,” she adds.
“You can’t just say, ‘I want to lose weight…someday.’ It’s that kind of loose talk, without a fence or guideline, that discourages you from getting started and prevents you from succeeding. The way I did it was by tying it to an upcoming event in my life. I never focused on a number and I didn’t set out to lose a certain number of pounds per week or overall. I merely found a target date a year away and I proclaimed to myself that I’d be in better shape by then. — Maria Menounos, author of  The Everygirl’s Guide to Diet and Fitness, on how she lost 40 pounds
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