Protein serves a dual role in helping you trim down belly fat by increasing muscle mass and metabolism, while also helping stave off hunger. Research shows that a higher-protein diet increases thermogenesis, which means you burn more calories. Further, eating protein leads to an increased feeling of satisfaction after the meal, often causing you to eat fewer calories later in the day. These High-Protein Breakfast Tacos are the perfect way to start your morning and will keep you feeling full until lunch.

Another popular mainstream diet, Dr. Barry Sears's plan is considered to be one of the first in the recent wave of "anti-inflammatory" plans. It sets you up for success by calibrating your plate to be a third protein and two-thirds carbohydrates (not starchy ones like potatoes, think colorful vegetables instead) with a little bit of MUFAs, or monounsaturated fatty acids (the good-for-you kind ) in the mix.


Keeping track of what you eat is a great way of forcing yourself to focus on your diet and assess exactly what you’re eating. Without it, the calories can start creeping up without you noticing so a journal of some other means of tracking your calorie intake can be the difference between maintaining your weight or being forced to start dieting all over again.
When it comes to the "best" diet for most people, this one consistently ranks at the top of every list. If you can't afford a cruise to the Mediterranean (yet!), at least you can eat like the beautiful, long-living, and famously healthy people from the region. The Mediterranean diet teaches you to eat like a Sardinian, one of the "blue zones" identified by researchers as having a high number of people living past 100—by eating more fish, olive oil, healthy fats, and fresh vegetables. The point is to have not just a longer life but also a healthier and happier one, whether you're trying to lose weight or not. (Really—research shows that you can reap the benefits of the Mediterranean diet without cutting calories.)
Following the SlimFast diet plan couldn't be simpler, reviewers say, using the meal replacement bars and shakes for breakfast, lunch and snacks, while eating a balanced, low calorie meal for dinner. The bars and shakes are very affordable and widely available, and the diet has been proven to help people lose weight if they follow it closely. However, the restrictive nature of the Slim Fast diet can be tough to stick to for the long term, and many experts say 1,200 calories per day are not enough for most.

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.
“There are many diet plans on the market today that promote good health,” says Emily Kyle, RDN, who is in private practice in Rochester, New York. “The key is finding one that does not cause you stress or agony.” Ask yourself questions such as: Would the diet guidelines make you happy? Anxious? Stressed? Are you able to follow them long term? “Factors such as enjoyment, flexibility, and longevity should be strongly considered,” adds Kyle.

In addition to improving your health, maintaining a weight loss is likely to improve your life in other ways. For example, a study of participants in the National Weight Control RegistryExternal* found that those who had maintained a significant weight loss reported improvements in not only their physical health, but also their energy levels, physical mobility, general mood, and self-confidence.
Women’s challenge with weight loss also comes down to nature. Nature wants to preserve a woman’s ability to bear children. When you’re in a calorie deficit, it can interfere with your fertility, so your body fights weight loss to prevent jeopardizing your reproductive capacity. So don’t cut more than 1,000 calories a day or eat fewer than 1,200 calories daily.
The upshot of all these chemicals floating around is big trouble for big-bellied guys. In a study at the University of Alabama at Birmingham, researchers took 137 men of all ages and sizes and used seven different measurements to determine their risks of cardiovascular disease. The single best sign of multiple heart-disease risks? No, it wasn't the guys' family histories or their cholesterol profiles. It was the amount of abdominal fat they carried.
Why does this popular plan work? For one thing, it pushes wildly healthy staples to the forefront (think: nuts, vegetables, fruit, olive oil). For another, it's simply delicious, thanks to it's focus on fresh, simply prepared dishes like grilled fish with lemon and whole wheat pita with hummus. Science agrees: One meta-review of 16 studies, found the eating M.O. helped those on it lose an average of 8.5 pounds.
Really, it shouldn’t be so difficult to figure out which eating regimen will set fire to fat while maintaining muscle. Fortunately, the International Society of Sports Nutrition just released its position paper, which combs through all existing scientific studies to report how every diet will affect your body composition. Here, we’ve pulled five of the most six-pack-friendly diets and streamlined how they’re great, as well as why they might be right (or wrong) for you—according to the hard science.
Even if you’re seeing improvement with regular exercise, do not change your prescribed insulin regimen without consulting your doctor. Test prior to, during, and after exercise if you are on insulin and adding or making changes to your exercise program. This is true even if you think the insulin is causing you to gain weight. Changing your insulin plan could have a dangerous effect on your blood sugar levels. These changes could cause life-threatening complications.
The Mayo Clinic Diet is generally safe for most adults. It does encourage unlimited amounts of vegetables and fruits. For most people, eating lots of fruits and vegetables is a good thing — these foods provide your body with important nutrients and fiber. However, if you aren't used to having fiber in your diet, you may experience minor, temporary changes in digestion, such as intestinal gas, as your body adjusts to this new way of eating.
To drop serious lbs, you need the one-two punch of aerobic exercise plus strength training. Resistance helps build and preserve metabolism-boosting lean muscle while burning fat and is especially key when you hit a plateau. Amanda Green lost 15 pounds in two months doing hour-long cardio DVDs, but it wasn't until she started running outside and lifting weights three times a week that she was able to ditch the last 15 of her 30-pound goal.
Packaged meal programs: Many diet plans rely on meal-replacement bars, shakes, or other snack type foods. Still others rely on frozen entrees as a major part of your diet. Ask yourself if you are okay with a bulk of your diet relying on prepackaged snacks, shakes, or frozen meals, or if you prefer the flexibility of cooking your own meals or eating out frequently.
What the expert says: ‘This is something that is used for athletes as part of their training. While it can lead to weight loss, carbohydrates are an energy source for the body, and restricting them can lead to headaches, fatigue and difficulty concentrating. You would be better to find the level of carbohydrates your body needs by eating normal portion sizes and a balance of all food groups.’
What the expert says: ‘This is something that is used for athletes as part of their training. While it can lead to weight loss, carbohydrates are an energy source for the body, and restricting them can lead to headaches, fatigue and difficulty concentrating. You would be better to find the level of carbohydrates your body needs by eating normal portion sizes and a balance of all food groups.’

For years, research has supported the fact that Weight Watchers is one of the best weight-loss diets. Thanks to its flexibility, easy-to-understand food tracking system, and group support, Weight Watchers consistently ranks number one for "best weight loss diet" and "best commercial diet" in the U.S. News & World Report rankings. (Oprah's endorsement probably didn't hurt either!) They recently revamped their program and changed their name to WW to signify a focus on overall wellness—not just weight-loss—so that users who aren't focusing on weight can also use the program to eat better, work out more, or develop a more body-positive mindset.


Cons: That same study on the perks of being a keto athlete also found those same dieters had a lower exercise economy (how efficiently you use oxygen while moving). And whereas pretty much every other diet offers flexibility in the macro range, eating a few too many grams of carbs or protein will knock your body out of ketosis, so you have to be pretty committed to see the perks of this one. Lastly, the low protein count required to stay in ketosis may be holding you back here: A study analysis in Nutrition, Metabolism, and Cardiovascular Diseases found upping protein on a keto diet by just 5% tripled fat loss.
"When we’re lacking in sleep, our body’s hormones get thrown off balance which can impact our hunger levels the next day. We all have two hormones that affect our appetite: ghrelin and leptin. When we don’t get enough sleep, our ghrelin levels (the hormone that makes us feel hungry) rise, and our leptin levels (the hormone that makes us feel full) drop. This means that when we’re awake, we tend to eat more but feel less satisfied. Try going to bed a little earlier than usual to avoid this imbalance and remember to remove any distractions that might prevent you from nodding off."
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