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.
The researchers agree that the diet itself isn’t inherently dangerous. But, cautions Weiss, “If you have any medical condition, if you take any medicine at all – there are lots of things that change how medicines work in our bodies, and nutrition is definitely one of them. If you’re making a real change in your nutrition, you really should talk to your doctor.”
If you want to know how to lose belly fat then listen up: cutting out carbs and forcing your body through endless HIIT workouts aren't the answer for shifting lbs from your midriff. In fact, there's no one formula to spot reduce a wobbly waist because several factors affect how to lose belly fat: mental well being, cortisol levels, hormones, nutrition, the intensity of your workouts all play a part.
I had mixed feelings when reading this article. On the one hand, it seems like it’s a good diet to follow if you want to drop some weight quickly, but on the other it seems totally unhealthy. It obviously isn’t good for your body to be so hungry that it’s sending constant hunger signals. Although it’s only for a few days, I can’t imagine it’s actually that good for your health. I think perhaps doing it once or twice to drop weight for a special event or something couldn’t do too much harm, although I’m not expert, but I definitely don’t think this is something that should be sustained for a longer period of time.
As Michael Dansingel, MD from the Academy of Nutrition and Dietetics said: "First, if a diet sounds too good to be true, it probably is. Second, if you can’t see yourself following the diet for the rest of your life, it’s not for you." This basically holds true to the 3 day Military Diet: it sounds magical, yet when you take a closer look, you realize its pitfalls.
However, it's safe to say that no one really knows the origin of the military diet, Yurechko said, as it is certainly not approved by the military. But if you are still a tad bit curious about taking this diet out for a spin, we spoke to some experts on the subject to make sure you have all the ins-and-outs. Here are some takeaways to keep in mind.
Keto breath, on the other hand, is less of a side-effect and more of a major (not harmful) inconvenience (your breath literally smells like nail polish remover). Basically, when your body breaks down all that extra fat on the keto diet, it produces ketones—one of which is the chemical acetone (yes, the same stuff that's in nail polish remover), Keatley previously told WomensHealthMag.com.
As said before, measuring your waist with the tape is the easiest way to check belly fat. Measure your torso at the level of your navel. As per the official guidelines, measure your abdomen from just above the hip bone or the iliac crest, just where it intersects the line dropping down from the middle of the right armpit. Breathe normally while taking the measurement, and don’t hold the measuring tape too tight against the skin. Those with a waist size more than 33 inches are at risk of developing chronic heart disease.
Earlier, belly fat was considered healthy; it was perceived as a reservoir of adipose tissues that could be utilized when a person needed extra energy. With time, the views have changed. Researchers state that excess belly fat triggers chronic cardiovascular diseases. So, it is important to measure belly fat and check how much you need to reduce. Here are some parameters to measure your waistline.
The scale is not necessarily your friend. You may want to lose fat – but the scale measures muscles, bone and internal organs as well. Gaining muscle is a good thing. Thus weight or BMI are imperfect ways to measure your progress. This is especially true if you’re just coming off a long period of semi-starvation (calorie counting), as your body may want to restore lost muscles etc. Starting weight training and gaining muscle can also hide your fat loss.
By planning your meals and logging what you eat and drink, you will start memorizing how many calories are in your favorite meals and ingredients. Best of all you will learn your own eating habits and cravings, so over time you can better plan your meals to suit your cravings. After a couple weeks if you see you consistently have a 3:00 pm craving for carbs, you can head off that craving in advance with a skinny sandwich at lunch. Or, a sweet craving at 10:00 am can be managed with a sweet oatmeal breakfast.
Some antidepressant medications can cause weight gain, especially the older tricyclic antidepressants (TCAs) such as Tryptizol, Saroten, and Clomipramine; as well as newer drugs such as Remeron (Mirtazapine). Lithium (for manic-depressive disorder) often causes weight gain. The most common antidepressants known as SSRI’s (for example Citalopram and Sertraline) usually don’t impact weight significantly. More on depression

Still, the Military Diet isn’t associated with the military at all. It also doesn’t follow the principles used in the actual military. In fact, as one review published in the journal Philosophical Transactions of the Royal Society B: Biological Sciences that examined of nutrition in the military stated, “Nutrition and the military are fundamentally entwined.” (1) Historically, a lack of a balanced diet has led to poor military performance.

"Feeling stressed can wreak havoc on our bodies. It can cause our body to produce the steroid hormone cortisol, which can make you crave sugary foods that provide instant energy and pleasure. Short-term bursts of cortisol are necessary to help us cope with immediate danger, but our body will also release this hormone if we’re feeling stressed or anxious. When our cortisol levels are high for a long amount of time, it can increase the amount of fat you hold in your belly."

You don’t have to go low-carb to ditch those extra pounds around your waist in a short period of time. In fact, opting for more whole grains might just get you there faster. Researchers at Tufts University have linked eating three or more daily servings of whole grains to as much as a 10 percent reduction in visceral body fat, the kind that ups your risk for chronic diseases, like diabetes, heart disease, and high blood pressure.
Big salad of baby greens with Pritikin-Style Thousand Island Dressing, which has less than one-quarter the calories and sodium of regular Thousand Island Dressing. What a gift for your heart and waistline! To make dressing, combine thoroughly the following: ¾ cup plain fat-free Greek yogurt, ½ cup fat-free sour cream, ¾ cup unsweetened, low-sodium ketchup (good brand is Westbrae), ½ teaspoon oregano, and ½ teaspoon granulated garlic.
When you're at the gym, don't head straight for the treadmills. Tim Rich, personal trainer and district fitness manager at Crunch Gyms in San Francisco says, "you lose steam when you save the weights for last, and that's where the magic happens." Weight-training burns approximately 30 to 50 more calories a day for every pound of muscle you gain, so "when you have more energy you'll be able to lift heavier weights, which helps you burn more fat everywhere, including your belly," he says. And researchers found that, while those who lifted heavy weights lost the same amount of weight as those who only did cardio, the only weight they lost was fat—the cardio queens lost muscle, and that's never good, especially as you get older. 
Do not try to lose weight too rapidly. Crash diets and diet pills that promise weight loss are usually bad for you and actually don't help keep the weight off in the long run. Resist the urge to take the "easy" way out and instead stick with a healthier lifestyle. This way you lose the weight and improve your health, helping you keep the weight off in a way that won't harm you in the long run.
Con: Results can vary depending on how much fluid you drink. By drinking more water, you dilute the concentration of ketones in the urine and thus a lower level of ketones will be detected on the strips. The strips don’t show a precise ketone level. Finally, and most importantly, as you become increasingly keto-adapted and your body reabsorbs ketones from the urine, urine strips may become unreliable, even if you’re in ketosis.
Bonnie J. Brehm, Randy J. Seeley, Stephen R. Daniels, and David A. D’Alessio, “A Randomized Trial Comparing a Very Low Carbohydrate Diet and a Calorie-Restricted Low Fat Diet on Body Weight and Cardiovascular Risk Factors in Healthy Women,” The Journal of Clinical Endocrinology & Metabolism: Vol 88, No 4; January 14, 2009. http://press.endocrine.org/doi/full/10.1210/jc.2002-021480.
In the UK, up to 5% of the general population is underweight, but more than 10% of those with lung or gastrointestinal diseases and who have recently had surgery.[30] According to data in the UK using the Malnutrition Universal Screening Tool ('MUST'), which incorporates unintentional weight loss, more than 10% of the population over the age of 65 is at risk of malnutrition.[30] A high proportion (10-60%) of hospital patients are also at risk, along with a similar proportion in care homes.[30]
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.
Ketogenic diets are, however, a well-established way to help control Type 2 diabetes, and the plan has for nearly 100 years been used to reduce instances of childhood epileptic seizures. Some scientists also think the high-fat diet may hold promise for staving off Alzheimer's, and there are some early indications it might help improve certain cancer treatment outcomes when used in conjunction with drugs. (Harper is part of a research team investigating how the diet might help boost treatment among people with breast cancer.)

If what you're attracted to is the idea of a quick, three day challenge, Palinski-Wade has other ideas. "Challenge yourself to eat a minimum of 30 grams of fiber per day and at least 5 servings of fruits and vegetables. This would still reduce calorie intake while providing your body with nutrients that promote health all while allowing you to develop eating habits that can actually lead to sustained weight loss." If it's the idea of inermittent fasting that you like, there are other ways to try that, too.
We weren't joking when we said gut flora was important—when it's out of whack, the way your body breaks down calories is also impacted and it's all to do with two kinds of fat cells: white and brown. The white ones cause obesity and insulin resistance when there are too many hanging around, and insulin resistance makes it super difficult to burn fat despite working out like a #boss. Brown fat cells, on the other hand, protect the body against excess weight, and the more you have, the more calories you can burn. So the goal is to have white fat cells turn into brown ones as often as possible. That happens when your gut flora is in check (with that balanced diet we talked about above), you exercise, and get enough sleep, as melatonin cues up the production of brown fat cells. 
You might have heard the term ‘middle-age spread’. This means, as women progress towards their middle years, the ratio of body fat increases compared to the body weight. During menopause, when the levels of estrogen go down, and the amount of androgens or male hormones increase, then there is an increased risk of fat accumulation in the waist. Hormones actually regulate the fat concentration in the body, and your figure depends entirely on it!
Stop treating your kitchen like an all-night diner and you’ll stop seeing those unwanted pounds piling onto your frame, too. The results of a study published in Cell Metabolism found that mice who only had access to food during an eight-hour period stayed slim over the course of the study, while those who ate the same number of calories over a 16-hour period gained significantly more weight, particularly around their middle. When you’re finished with dinner at night, shut the fridge and don’t look back until morning — your belly will thank you. When you do head back to the kitchen in the A.M., make sure the 40 Things Healthy Cooks Always Have in Their Kitchen are there waiting for you.
A study with an intent-to-treat prospective design was published in 1998 by a team from the Johns Hopkins Hospital[19] and followed-up by a report published in 2001.[20] As with most studies of the ketogenic diet, there was no control group (patients who did not receive the treatment). The study enrolled 150 children. After three months, 83% of them were still on the diet, 26% had experienced a good reduction in seizures, 31% had had an excellent reduction and 3% were seizure-free.[Note 7] At twelve months, 55% were still on the diet, 23% had a good response, 20% had an excellent response and 7% were seizure-free. Those who had discontinued the diet by this stage did so because it was ineffective, too restrictive or due to illness, and most of those who remained were benefiting from it. The percentage of those still on the diet at two, three and four years was 39%, 20% and 12% respectively. During this period the most common reason for discontinuing the diet was because the children had become seizure-free or significantly better. At four years, 16% of the original 150 children had a good reduction in seizure frequency, 14% had an excellent reduction and 13% were seizure-free, though these figures include many who were no longer on the diet. Those remaining on the diet after this duration were typically not seizure-free but had had an excellent response.[20][21]
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 you substitute foods, make sure you don’t use the same amount of the substitute as the original without checking caloric equivalence first. For example, if you want to substitute Greek yogurt for cottage cheese, you can actually eat a bit more of the yogurt than the prescribed amount of cottage cheese. Just 1 cup of 2% cottage cheese contains 194 calories, while 1 cup of 2% Greek yogurt contains 150 calories, meaning you can have additional 1/3 cup of the yogurt. Make use of a calorie calculator if you’re not sure about your allowances.   
"Your body needs a healthy balance of exercise and rest. Doing too much prevents the body from shifting excess fat. Exercising without rest can impact our levels of the steroid hormone cortisol and cause an increase of stubborn fat stored in the belly. Not allowing your body to recover can increase the risk of injury too, so make sure you factor in rest days to your plan."
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 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.
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