From celebrity-endorsed to science-backed, finding the best diet for your body and lifestyle can be an exercise in frustration—definitely not the kind of exercise you need right now! To make your search easier, we've pulled together the 10 most popular diets based on which ones have consistently ranked highest on the annual U.S. News & World Report rankings, WebMD, and other current diet lists. Just know this: It's not about finding out which diet is the most popular overall but which one fits your goals and lifestyle the best. After all, the best diet for you is the one you can stick with (and enjoy)!

Be choosy about carbs. You can decide which ones you eat, and how much. Look for those that are low on the glycemic index (for instance, asparagus is lower on the glycemic index than a potato) or lower in carbs per serving than others. Whole grains are better choices than processed items, because processing removes key nutrients such as fiber, iron, and B vitamins. They may be added back, such as in “enriched” bread.


But the information that researchers are unearthing about the differences in the way that men and women lose weight inspires hope that the next generation of weight-loss advice will be more tailored and effective than the generic tips that have gotten Americans no closer to sliding into their dream jeans. (More than a quarter of Americans are obese, according to a May Gallup poll, a number that has been ticking upward for years). Although experts have long insisted that losing weight is simply a matter of burning more calories than you consume, they now say that it’s much more complicated than that.
So it’s no wonder that losing weight and getting in shape are among the most popular resolutions year over year, because so many people can’t keep them; 80% of New Year’s resolutions fail by February. So Moneyish spoke with several leaders in the field of obesity research and prevention who have reviewed the science surrounding weight gain and loss to explain what to eat and avoid; how much exercise you need and which workouts work best; as well as their tips for making these moves a part of your new, well-balanced life in the New Year.
While hormones play a role in weight gain for women over 50, so does lifestyle. Women at this time in their lives tend to be less active and eat more calories than their body needs, says the Academy of Nutrition and Dietetics. To make a swing in the other direction, you need to find a plan that helps you control your calorie intake, is filled with nutrient-rich foods and suits your taste buds. Consult your doctor before making changes to your diet.
Whereas many beverages can increase your waistline (see above), there is one that is guaranteed to trim your tummy: water. Drinking plain ol’ H2O works because staying fully hydrated tells your body it’s okay to release any extra water it’s retaining, decreasing the accompanying bloat. Plus, drinking water has been proven to reduce cravings for sweets, lower your appetite, and help you feel satiated faster. Here 9 more ways to bust belly fat in a single day!
The menstrual cycle itself doesn’t seem to affect weight gain or loss. But having a period may affect your weight in other ways. Many women get premenstrual syndrome (PMS). PMS can cause you to crave and eat more sweet or salty foods than normal.4 Those extra calories can lead to weight gain. And salt makes the body hold on to more water, which raises body weight (but not fat).
It is not that men don’t diet. They just do it differently. They tend to include more saturated fat in their diet, while women tend to completely avoid them. Nutritionists explain, as long as they keep their intake lower than 15 per cent of their total daily fat intake, saturated fat isn’t harmful. In fact, small doses of saturated fat can help them avoid testosterone depletion.

Too much variety in your diet can mess with your satiety cues and make you overeat, so add some (tasty) monotony to your routine. One easy way: Eat the same healthy breakfast and/or lunch each day during the week, and savor new tastes on the weekend. The best thing about that plan, says 69-pound-loser (er, winner?) Melanie Kitchen: "I didn't have to keep coming up with new recipes!"


Potassium, magnesium, and calcium can help to serve as a counter-balance for sodium. Foods that are rich in potassium include leafy greens, most "orange" foods (oranges, sweet potatoes, carrots, melon) bananas, tomatoes, and cruciferous veggies — especially cauliflower. Low-fat dairy, plus nuts, and seeds can also help give you a bloat-busting boost. They've also been linked to a whole host of additional health benefits, such as lowering blood pressure, controlling blood sugar, and reducing risk of chronic disease overall.
As funny as it sounds, sleep deprivation may make you fat — and not just because you're susceptible to cases of the late-night munchies (although there's that too). There's tons of research that demonstrates getting less than the desired amount — about 7 hours — of sleep per night can slow down your metabolism. Plus, when you're awake for longer, you're naturally more likely to nosh. So don't skimp on your ZZZs, and you'll be rewarded with an extra edge when it comes to shedding pounds quickly.
14 ways to lose weight without diet or exercise Strict diets can be challenging to follow, and people may not always have the time or ability to exercise. However, a variety of simple lifestyle changes can help people lose weight and improve their health. These include taking probiotics, getting enough sleep, and thoroughly chewing food. Learn more here. Read now
It’s pretty common for men to pack some extra poundage around their midsection. In fact, the average man is about 24lbs heavier today than men in 1960, according to stats from The State of Obesity—and the figures are rising. We’ve seen slimmer days, but don’t think this is a grim sentence, dooming you to eternal chubbiness. There are dozens, if not hundreds, of ways for you to burn belly fat—fast.
Since we can’t spot reduce fat, the only way to ever get those flat abs is to burn body fat overall. For this reason, HIIT workouts, exercises that work multiple muscle groups simultaneously (like push ups, squat thrusters etc.), and weight lifting are going to be the most effective fitness strategies for bringing out your six pack because they are the most metabolic. Hours of cardio and tons of crunches are not the way forward here.
As you exercise, calories are burned and your body fat percentage decreases. So, exercising not only helps you lose belly fat, it also sheds fat from other areas. Running and walking are two of the best fat-burning exercises. Plus, the only equipment you need is a good pair of shoes. Between the two, running burns more calories, but walking really isn’t too far behind.
Many women fall short in their protein intake, according to Precision Nutrition, but getting enough protein can actually help you shed pounds. Protein takes more energy to digest than carbs or fats, so including more of it in your diet actually boosts your metabolism. And protein also provides nutritional support for your workouts, so you can build sleek, lean muscle tissue to get a toned appearance.
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.
It’s wise to want to eliminate sugary drinks from your diet, but replacing them with “diet” versions or drinks with artificial sweeteners is not the solution. One study conducted by researchers from Marquette University and the Medical College of Wisconsin showed that artificial sweeteners could actually contribute to weight gain in a way that does not happen with natural sugars. Other studies have shown that drinking artificial sweeteners was highly correlated to an occurrence of dementia and stroke.
The amount you move around and how often you do it will change during your life, but you may not notice it happening. Did you used to play sports, dance a lot, take long walks with your dog, or run around every day after your kids? If you’re not doing any of those things now, or exercising at all, your body won’t burn calories or use energy in the same way and your weight will change.
Sure, ketchup is tasty, but it’s also a serious saboteur when it comes your weight loss efforts. Ketchup is loaded with sugar — up to four grams per tablespoon — and bears little nutritional resemblance to the fruit from which it’s derived. Luckily, swapping out your ketchup for salsa can help you shave off that belly fat fast. Fresh tomatoes, like those used in salsa, are loaded with lycopene, which a study conducted at China Medical University in Taiwan links to reductions in both overall fat and waist circumference. If you like your salsa spicy, all the better; the capsaicin in hot peppers, like jalapeños and chipotles, can boost your metabolism, too.
‘Do it for a couple of minutes in bed and you’ll actually be able to wind down and fall asleep more easily. But it’s a skill, so it requires a commitment to practice it, as with anything. Think of it a bit like dating – the first time you do it it’s terrible, it’s uncomfortable, nobody knows what they’re doing, but the more dates you go on the better it gets.

It’s pretty common for men to pack some extra poundage around their midsection. In fact, the average man is about 24lbs heavier today than men in 1960, according to stats from The State of Obesity—and the figures are rising. We’ve seen slimmer days, but don’t think this is a grim sentence, dooming you to eternal chubbiness. There are dozens, if not hundreds, of ways for you to burn belly fat—fast.
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.
Avoid sweetened drinks. Drinks that are sweetened, whether artificially or naturally, will have little nutritional value and add lots of empty calories to your diet. Do not drink fruit juice or other sweetened drinks. Even natural sugars will increase your daily calorie intake and prevent weight loss. If you chose to drink juice, do not exceed 4 oz per day (1/2 cup). Instead of drinking sweetened beverages throughout your day, drink unsweetened, calorie-free beverages. Some beverages to avoid include:
You don’t have to be the next Usain Bolt in the making to enjoy some serious belly-slimming results from hitting the track from time to time. Even a moderate-rate jog a few times a week can blast through that belly fat; in fact, a study conducted at Duke University Medical Center found that, over the course of an eight-month study, overweight adult study subjects who jogged 12 miles a week lost the most belly fat and burned 67 percent more calories than participants who did an equivalent amount of resistance exercise, or a combination of cardio and resistance work.

The authors wanted to compare low-fat vs. low-carb diets, but they also wanted to study genetic and physical makeups that purportedly (their word) could influence how effective each type of diet will be for people. Previous studies had suggested that a difference in a particular genetic sequence could mean that certain people will do better with a low-fat diet. Other studies had suggested that insulin sensitivity may mean that certain people will do better with a low-carb diet.


We pulled the top 14 of the best commercial diets (marketed to the public for profit) and the top 12 of the best diets overall. We also threw five of the most popular diet apps into the mix. Since these are largely tracking devices that don’t espouse unique eating habits, they don’t appear to meet US News’ definition of diet, but are still potentially effective weight loss tools.

“Most people who have been lean their whole lives have a much better understanding of proper portion size than people who are overweight,” says Deborah Riebe, Ph.D., a professor in the department of kinesiology at the University of Rhode Island. “If they go out to eat, they’re much more likely to ask for a doggie bag right away or to leave food on their plate rather than cleaning it up.”
Identifying and resolving typical weight loss hurdles — like flagging enthusiasm — is something Noom excels at. The initial questions that set up your profile, match you with a coach, and place you with a group, all intend to diagnose your learning style and what flavor of support you need. What kicks you into high gear, tough love or words of affirmation? How do you like to show support? How do you feel about goal setting?
Get all that? Basically, the differences between groups were minimal. Yes, the low-fat group dropped their daily fat intake and the low-carb group dropped their daily carb intake. But both groups ended up taking in 500 to 600 calories less per day than they had before, and both lost the same average amount of weight (12 pounds) over the course of a year. Those genetic and physical makeups didn’t result in any differences either. The only measure that was different was that the LDL (low density lipoprotein) was significantly lower in the low-fat group, and the HDL (high density lipoprotein) was significantly higher in the low-carb group.
Giancoli also recommends finding a diet that fits in with how you really live. She notes that if you enjoy going out to eat but try to commit to a diet that forbids you from ever going to a restaurant, you’re just going to cheat. “It’s not sustainable… You’re most likely going to have a healthier meal if you’re going to cook yourself, but you’re depriving yourself of that social interaction if you never go out.” To put it another way: Your eating practices shouldn’t isolate you or keep you from having fun.
Nutrisystem is so accessible, you can even grab it at your local Walmart. There are a few different plans to choose from, but each of them has you eating 4 to 5 times a day — and every meal and snack is high-protein, high-fiber, and contains zero trans fat, MSG, or artificial preservatives. Those who use this diet are said to lose an average of 1 to 2 pounds per week.
Many women fall short in their protein intake, according to Precision Nutrition, but getting enough protein can actually help you shed pounds. Protein takes more energy to digest than carbs or fats, so including more of it in your diet actually boosts your metabolism. And protein also provides nutritional support for your workouts, so you can build sleek, lean muscle tissue to get a toned appearance.
When you eat foods that are low- or no-fat, other ingredients are added in so that the food tastes like its full-fat counterpart. Those extra ingredients don’t add in the nutrients that have been stripped away, however, so you end up craving more because, despite the fact that you just ate, your body is still lacking in the vital nutrients it needs. You end up eating more calories than you would have if you’d just eaten the full-fat product.
Don’t let extra hours lounging in bed stand between you and a flatter belly. While getting enough sleep can help boost your metabolic rate, sleeping in may undo any benefit you’d enjoy from catching a few extra winks. One study reveals that late sleepers who snoozed past 10:45 in the morning ate nearly 250 more calories over the course of the day, despite eating half as many fruits and vegetables as their early bird counterparts. Even worse, they chowed down on more salty, sugary, and trans fat-laden fast food than those who woke up earlier. If you happen to head out of the house early, you’re in for an additional metabolic boost; researchers at Northwestern University have found that people exposed to just a short period of early morning sunlight had lower BMIs than their late-waking counterparts.
Everyone is different. How quickly you burn calories when you are not physically active can be very different from other people based on your specific genes, biology, and past. While scientists know that there are 3,500 calories in one pound, simply eating 500 fewer calories every day for a week (or 3,500 fewer calories in a week) does not always end in losing exactly one pound.
Your body needs a certain amount of essential vitamins and minerals to function properly. What happens when you don’t get enough of them? What happens when you eat too little food, or when the food you eat isn’t sufficiently nutritious? Perhaps our bodies catch on and reply by increasing hunger levels. After all – if we eat more, we increase the chances of consuming enough of whatever nutrient we are lacking.
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