Many diet plans cut out entire food groups, which can create nutrient deficiencies as well as health problems. For instance, if the diet is very low in carbohydrates and you have type 1 diabetes or type 2 diabetes, it’s probably not a good fit. And if it’s too restrictive and you’re pregnant or breastfeeding, it’s not a good idea, either. Keep in mind that pregnancy is not a time for weight loss. Speak with your doctor before making any changes to your diet if you are pregnant or breast-feeding.
"Anytime you’re stressed, you probably go for food," Dr. Seltzer says. (Have we met?!) That’s because cortisol, the stress hormone, stokes your appetite for sugary, fatty foods. No wonder it’s associated with higher body weight, according to a 2007 Obesity study that quantified chronic stress exposure by looking at cortisol concentrations in more than 2,000 adults’ hair.

Want to blow away your belly without logging months of mind-numbing hours on the treadmill? High Intensity Interval Training (HIIT) will kickstart your metabolism like no other workout, burning more than twice the calories as a lighter and longer session, according to a study from Southern Illinois University. And the total amount of time you need to dedicate to HIIT: 20 minutes. It really is the least time exercising for the biggest results.
While you may be tempted to eat as few calories as possible to lose weight more quickly, as mentioned above, it’s important that you don’t cut more than 1,000 calories from your daily diet or eat fewer than 1,200 calories a day — even if that means your energy deficit is smaller than 1,000 calories. Eat too little and you’ll slow down your metabolism and put yourself on track to regain the weight — often with a few extra pounds.

Basically, the effect of exercise on our weight is vastly overrated. That’s why it’s only number 15 on this list. There are other things you need to take care of first. It’s not a good idea to eat bad food, drink sugar water (so-called “sports drinks”) or be on medications which force you to exercise for hours daily just to compensate. Metaphorically that’s like digging a hole, into which you put your ladder, on which you stand and paint the basement-level windows of your house.


Markwald, R. R., Melanson, E. L., Smith, M. R., Higgins, J., Perreault, L., Eckel, R. H., & Wright, Jr., K. P. (2013, April 2). Impact of insufficient sleep on total daily energy expenditure, food intake, and weight gain. Proceedings of the National Academy of Sciences of the United States of America, 110(14), 5695–5700. Retrieved from https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3619301/

The efficacy of Nutrisystem boils down to portion control. A tiny tray of frozen tuna casserole doesn’t provide a lot of nutrients or satisfaction, but if that’s all you have for dinner, you’re keeping calorie count low. We entered in a couple Nutrisystem meals and found their point count to be mid-high, between 7 and 9. Ultimately, tiny amounts of not-wholesome foods doesn’t teach you to eat well.


Avoid fad diets. It's never a good idea to trade meals for shakes or to give up a food group in the hope that you'll lose weight — we all need a variety of foods to get the nutrients we need to stay healthy. Avoid diet pills (even the over-the-counter or herbal variety). They can be dangerous to your health; besides, there's no evidence that they help keep weight off over the long term.
Walking puts all of the abdominal muscles to work. Make sure you swing your arms and contract your midsection while you walk, and maintain a brisk pace. Once you get your body accustomed to a daily walk, you'll hate to go a day without it. Walk for at least thirty minutes each time to achieve the aerobic effect, and be sure to drink plenty of water.
Some diet plans, such as the MIND diet and the DASH diet, are meant to focus on certain areas of health — and weight loss may be a bonus. Others are created with weight loss as a primary goal. “It is important to remember that we are all very unique individuals,” says Kyle. “We all have different states of health and different lifestyles, which could affect what diet plan is best for us. That means that you should not be considering what is working for your friends or family members — and instead should pay attention to what works for you individually.”
"Crash diets (dramatically cutting down how much you eat) might help you to lose a few pounds at first, but they’re hard to sustain and won’t help you keep the weight off. It might seem like a quick and easy option, but eating too few calories can actually do more harm than good. If your calorie intake dips too low, your body could go into starvation mode. This will slow down your metabolism, making it harder for your body to lose weight. Make sensible, healthy changes to your lifestyle that you can stick to and avoid the fad diets."
That’s where these tips come in. We talked with eight women over 40—all of whom have lost 40 or more pounds!—about the tools and methods that helped them make lasting healthy changes. And we've got to admit that they’re pretty darn genius! Try incorporating a few into your weight loss plan, and you just might find yourself on the fast track to getting into those skinny jeans. (Looking for even more slim-down secrets? Don’t miss these 6 things you must do to lose weight over 40.)
The best low-cal diet plan isn't a diet so much as it is a method. CICO stands for "calories in, calories out" and is based on the mathematically sensible principle that as long as you're burning more calories than you're eating, you'll lose weight. All you need to get started is a way to track your calories—there are plenty of apps on the market although a pen and paper works great too—and a food scale to keep you honest about your portion sizes. (Also read this guide on how to safely cut calories to lose weight.) People love the simplicity and straightforwardness of the plan. And while it may not be the fastest way to lose weight, you're guaranteed to have success long term. (Just know that some weight-loss experts actually don't recommend calorie counting.)

When you want something sweet, all those fat-free, sugar-free options seem like a smart choice for weight loss. But researchers at Cornell University found that overweight people who choose low-fat versions of snack foods rather than the regular kinds consume, on average, twice as many calories. "The terms 'fat-free' or 'sugar-free' can create a green light effect, triggering people to eat more," says dietitian Cynthia Sass, RD. But many fat-free foods have about the same number of calories (or more) as their full-fat counterparts. 
While any diet that reduces your intake of fat, sugar, and carbohydrates will help you lose weight, a weight-loss plan can offer you much more and give you a much better chance of long-term success. As weight-loss plans have been developed by dietitians, fitness coaches and nutritionists, they are designed to help you lose weight safely and progressively, while altering your attitude to food and encouraging you to adopt healthier habits.
A diet that’s low in fat and carbohydrates can improve artery function, according to a 2012 study by Johns Hopkins researchers. After six months, those on the low-carb diet had lost more weight, and at a faster pace. But in both groups, when weight was lost—and especially when belly fat shrank—the arteries were able to expand better, allowing blood to travel more freely. The study shows that you don’t have to cut out all dietary fat to shrink belly fat. For heart health, simply losing weight and exercising seems to be key. 
Stress skyrockets your levels of cortisol, often called “the belly fat” hormone because it signals to the body to store fat around your waist. Add the daily stressors of living our modern lifestyle and you can see how cortisol can be constantly coursing through your veins. This perma-stress mode isn’t good for a lot of healthy reasons, your tummy being just one of them, so it’s important to take time every day to de-stress. Yoga, meditation, walking, journaling, doing a hands-on hobby, or playing a musical instrument are all great time-tested methods. (Hint: Know what isn’t? Watching television. The boob tube actually increases your levels of cortisol!)
However, if you’re already on medication and think it could be hampering weight loss efforts, speak with your doctor about your options. It may be possible to transition to a more natural option, like a natural form of birth control, coming up with a plan to transition off medication or simply trying an alternative that’s not known to cause weight gain.

Now, while there aren't foods that literally target burning belly fat, there ARE foods that can drive the production of certain hormones that can trigger our body to store more fat on our tummy. The two most infamous are cortisol and insulin. So, making sure to keep your processed sugar, refined flour, sodium content, and alcohol consumption low can go a long way toward helping you burn off the muffin top.
But the whole idea of fast weight loss may be the root of the problem. According to a Time expose on the subject: “When people are asked to envision their perfect size, many cite a dream weight loss up to three times as great as what a doctor might recommend.” An improbable and disheartening goal, and one that obscures the truth that losing small amounts of weight — even ten pounds — still has great health benefits.

Sure, there's your one friend who swears by the Taco Cleanse. And that other friend who ate nothing but broccoli soup for a month and dropped 20 pounds, found the love of her life, and got promoted at work. But before you start blending 80 stalks of broccoli into a cup or crunching your way through a crate of tacos, check out which diets are backed by science. Because don't you want to try one that will do the trick for you?
"What I don't like about any commercial diet is that the focus is not on your actual food choices," Hogan said. "It's about calories or points or numbers, and that really takes away from your ability to be in tune with your hunger cues and your fullness cues and what you're really craving. If we become more in tune with those things, we naturally consume how much the body needs. Paying too much attention to numbers takes away from that."

Tapsell, L. C., Dunning, A., Warensjo, E., Lyons-Wall, P., & Dehlsen, K. (2014). Effects of vegetable consumption on weight loss: A review of the evidence with implications for design of randomized controlled trials [Abstract]. Critical Reviews in Food Science and Nutrition, 54(12), 1529–1538. Retrieved from https://www.ncbi.nlm.nih.gov/pubmed/24580555
Make sure to program your cardio exercise in with your weight training the right way, though — a 2017 study found that performing cardio and weight training workouts on alternate days was far more effective for burning belly fat than stacking the workouts on top of each other in the same session. Put the two together, and watch that unhealthy midsection shrink.
Forgive yourself. So you were going to have one cracker with spray cheese on it and the next thing you know the can's pumping air and the box is empty? Drink some water, brush your teeth, and move on. Everyone who's ever tried to lose weight has found it challenging. When you slip up, the best idea is to get right back on track and don't look back.
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.

Do you even lift, bro? If you’re serious about getting rid of that belly fat fast, resistance training might just be the key. A study from the Harvard School of Public Health found that adding weight training to adult male test subjects’ workouts significantly reduced their risk of abdominal obesity over a multi-year study period, although doing the same amount of cardio had no such effect. Research from the University of Maryland even found that just 16 weeks of weight training boosted study participants’ metabolic rates by a whopping 7.7 percent, making it easier to ditch those extra inches around your middle.

The idea is that the fasting induces mild stress to the cells in your body, helping them become better at coping with such stress and possibly helping your body grow stronger. The verdict is still out regarding the diet’s long-term effectiveness with weight loss, according to a review of preliminary animal research published in January 2017 in Behavioral Sciences. (17)
Also, while your menstrual cycle may not affect weight gain or loss, losing or gaining weight can affect your menstrual cycle. Women who lose too much weight or lose weight too quickly may stop having a period, or have irregular periods. Women who have obesity may also have irregular periods. A regular period is a sign of good health. Reaching a healthy weight can help women who have irregular periods to have cycles that are more regular. Learn more in our Menstrual Cycle section.
If you want to work late at night, think again. When your biorhythms are off, you end up eating more. When you're tired you produce more ghrelin, which triggers cravings for sugar and other fat-building foods. Losing sleep can also alter your hormone production, affecting your cortisol levels that cause insulin sensitivity, prime reasons for belly fat! Getting about 7 hours of sleep a night is one of the best things you can do for your body shaping goals.
And maybe a new mattress, because it’s not just the amount of time you spend sleeping that keeps you lean, it’s also the quality of your sleep. Fat cells in your body produce a hormone called leptin that helps the body keep track of how much potential energy (i.e. fat) it has stored. But leptin is only produced during certain stages of sleep. Miss out on those stages because you’re not resting soundly enough, and you’ll disturb levels of the hormone, leaving your body with no real idea of its energy reserves. Consequently, you’ll end up storing calories rather than burning them.

Whole foods include fruits, vegetables, beans, nuts, seeds, whole grains, eggs, seafood, chicken and so on. Food philosophies may differ around which of these foods to emphasize, but that’s okay, since the evidence shows that there isn’t a single best way to lose weight. The goal is to select an approach that feels sustainable to you. If you can easily live without pasta, perhaps a low-carb method centered around veggies and quality proteins, like seafood, chicken, and lean beef would be a good fit. Vegans and vegetarians can lose weight by choosing fruits, vegetables, whole grains and plant proteins. Nut lovers may do well shedding pounds with a Mediterranean-style menu. Whatever diet appeals to your appetite and way of life, focusing on whole foods is something that all plans promote.
There’s a reason everyone harps on about protein: Not only does it help keep you full, but it’s also responsible for repairing the tiny tears caused by strength training in your muscles. This helps them grow bigger and stronger, nudging out body fat in the process. As a general rule of thumb, aim to get at least 70 grams of protein throughout the day, says Dr. Cheskin. (These high-protein foods can help you reach that goal.)
If you get enough protein and fat, your total calorie intake should take care of itself. Because you feel full, you won't binge on a can of Pringles and blow your calorie count for the day. The remaining 45 percent of calories in our plan comes from carbohydrates — enough to give your palate a full range of tastes and your body a combination of fast- and slow-burning fuel.
While many people turn to artificial sweeteners in a misguided attempt to whittle their waistlines, those fake sugars are likely to have the opposite effect. According to researchers at Yale, artificial sweeteners are actually linked with an increased risk of abdominal obesity and weight gain, possibly because they can trigger cravings for the real stuff and spike insulin levels in a similar fashion to real sugar.
Want a flatter stomach in two seconds? Stand up straight! Slouching emphasizes belly rolls but straightening your spine elongates your whole body, making you look taller and sleeker. Want to go even flatter for a picture? Use the old modeling trick and arch your back slightly—this will pull your skin tighter across your stomach while moving it farther away from the camera, making it look slightly smaller. Yeah, it’s a temporary fix but good posture offers many health benefits beyond looking good.

“Every morning I drink a cup of warm water with half a lemon squeezed into it, a teaspoon of apple cider vinegar, and a dash of cayenne pepper,” says Michelle Keough. This helps her start her day off on a healthy note while getting her hydrated after a long night. This trick, combined with eating meals built around protein and veggies, helped her lose 20 pounds and keep it off.
One note about this diet plan before we dive in. A personal trainer by profession, Jillian Michaels’ weight-loss plans are not for the fainthearted. She’ll take you on a journey, transform your body, and make you reach the fitness goals you’ve been craving…but it won’t come easy. Go into this plan with the determination and awareness that you’ll be working hard, and the results will really amaze you.
We all want a toned, flat stomach. No surprise there. But since many women are still relying on crunches to get it, we want to make one thing clear: Crunching is not the most effective abs workout. "Crunches work only the muscles on the front and sides of your abdomen, but it's important to target all the muscles of the core to get more defined abs—including lower back, hips, and upper thighs," says Lou Schuler, co-author of The New Rules of Lifting for Abs. (Also try these 20 tricks for engaging your core and getting a sneaky abs workout.)
But the whole idea of fast weight loss may be the root of the problem. According to a Time expose on the subject: “When people are asked to envision their perfect size, many cite a dream weight loss up to three times as great as what a doctor might recommend.” An improbable and disheartening goal, and one that obscures the truth that losing small amounts of weight — even ten pounds — still has great health benefits.
But I've seen some women beat themselves up over a few extra pounds, even though this does little more than destroy their self-worth. Berating yourself will not help motivate you to control your weight and improve your health. So the next time those negative thoughts creep into your head, recognize them for what they are and replace them with positive ones.
Unsurprisingly, the results showed that nothing had happened to the weight of the women receiving calcium or the placebo. However, the group which took the multivitamin lost more weight – about 3 kg more – and improved their health markers. Among other things, their basal metabolic rate (the rate at which the body burns calories when at rest) increased.
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