The Best Weight Loss Diets to Shed Pounds - Sports Illustrated

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The concept of losing weight is simple—run a caloric energy deficit over time and you'll eventually shed pounds.

But the key to weight loss isn't finding a diet that works in theory. It's finding an achievable diet plan based on your lifestyle and, to some degree, your psychological, genetic and metabolic make up.

Are you a Type A personality who prefers rule-based plans to flexible ones? Where do you tend to gain weight? Can your work-life balance handle food logging? What's your medical history?

These factors (and more) matter when it comes to choosing an effective weight loss diet—one you can follow through on long-term. They also determine the rate of your fat burn. Is fast weight loss realistic for you? Is it the healthiest route?

This article introduces the best diet for weight loss in various categories, including the best diet for PCOS weight loss and the best diabetic diet for weight loss.

This content is meant to be informative, but should not be taken as medical advice. It is not intended for use as diagnosis, prevention or treatment of health problems. Always speak with your doctor before starting any new supplement or exercise regimen.

Our Picks for the Best Diet for Weight Loss:

Nutrisystem benefits people who want to eat healthier, but don't have time to cook meals everyday. With Nutrisystem, you can follow a healthy diet with little effort.

This diet lets you pick the best meal plan for your needs and delivers it right to your door. It includes meals designed by dietitians for women's weight loss, men, couples and women over 55. You can also choose a plan based on your dietary restrictions and medical history, like the vegetarian or diabetes option.

Ultimately, Nutrisystem is a convenient way to follow a healthy diet plan. It proves you can lose weight without the hassle of daily calorie counting, food logs or meal-prepping.

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Noom is about making behavioral changes that promote life-long healthy eating habits. It pinpoints the reasons you have struggled with dieting, and provides a personalized plan to help you overcome them.

After downloading the Noom app, you'll complete a 15-minute questionnaire about your weight loss goals, health status and demographics (age, sex, gender etc.). It then provides reasonable daily goals to guide your diet, plus tips to make healthier lifestyle changes across the board.

You can also take part in daily lessons. They aim to help you find the triggers behind your unhealthy eating habits, uncover emotional ties to food and combat psychological barriers that keep you from maintaining a healthy diet long-term.

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Scientific evidence suggests that intermittent fasting is one of the best diets for fast weight loss. A recent study found that intermittent fasting may also be helpful for the prevention and management of chronic diseases, such as Type 2 diabetes and heart disease.

DoFasting is an app-based weight loss diet that provides a trackable way to try fasting. The app tailors a fasting schedule to your lifestyle and weight loss goals based on your completed questionnaire. Adjust your plan to try different types of fasting, like 24-hour, 16-hour and 14-hour fasts.

DoFasting promotes additional health benefits outside of weight loss, like improved heart health and enhanced mental function, according to its creators. The goal is to reach a healthy weight and make healthy lifestyle changes to keep the weight off.

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Formerly known as WeightWatchers, WW is ideal for people who struggle with food cravings and portion control. It allows you to eat whatever you want as long as you don't go over your allotted points.

WW is an excellent diet for people who value community support. Membership grants you access to an exclusive digital community you can lean on for tips, motivation and emotional support. You can also have a personal coach and receive one-on-one coaching sessions. Check-in weekly to review your progress and set goals for the next week.

Keeping up with your food Points is easy using the WW app. It allows you to scan a food item's barcode while you shop so you can see its Point value. You also get 12,000 recipes, weekly 30-minute group workshops and on-demand workout videos for all levels.

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Best Weight Loss Diet for Diabetes: Mediterranean Diet

The Mediterranean diet offers many health benefits alongside weight loss. According to a recent study published by the Journal of Internal Medicine, it may reduce the risk of Type 2 diabetes and cancer. It may also help lower high blood pressure and high cholesterol. The American Heart Association endorses it as a heart-healthy diet.

This is a great option for people who already follow a plant-based diet or want to start. No food is off-limits with this diet, not even processed foods. Nonetheless, highly processed foods and high-fat foods should be avoided.

We rank the Mediterranean diet as the best diabetic diet for weight loss because it strictly limits sweets and high-sugar foods, recommending fruit and nonfat yogurt in their place. It also emphasizes daily servings of low and zero-sugar foods like vegetables, brown rice, legumes, lentils and lean protein. These foods are relatively low on the glycemic index (GI) scale and don't cause significant spikes in blood sugar levels.

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Best Weight Loss Diet for PCOS: Mayo Clinic Diet

The Mayo Clinic Diet is designed to help you lose six to ten pounds in the first two weeks, making it one of the best diets for fast weight loss. If you have the will power, repeat the two-week process and potentially drop 12 to 20 pounds in one month. However, it is very restrictive. Doubling it won't be easy if you're not motivated.

The Mayo Clinic Diet is broken into two phases as follows:

Phase 1 is called the "lose it" phase. You learn how to break five unhealthy habits and add ten healthy habits to your everyday routine. You can't eat any sugar that doesn't come from fruit, nor drink alcohol or eat out. You can't even eat while watching TV.

Phase 2 is the "live it" phase. It transitions you to a new health-conscious routine, one that prioritizes healthy eating habits and regular exercise. You come to view your food choices as preventative healthcare, instead of a short-term method of losing weight.

The Mayo Clinic Diet is a flexible weight loss diet that you can tailor to your food preferences and dietary restrictions. If you need extra guidance, choose one of the five different meal plans: the Original Mayo Clinic Diet, Higher Protein, Health Keto, Vegetarian or Mediterranean. In addition to healthy eating, participants are encouraged to do at least 30 minutes of physical activity every day.

Women with polycystic ovary syndrome (PCOS) who need to lose weight should consider this diet. We rank it as the best diet for PCOS weight loss because healthy lifestyle changes are key to treating PCOS. Healthcare providers commonly recommend that women with PCOS lose weight using a low calorie diet and moderate exercise.

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Best for Seniors: DASH Diet

DASH stands for Dietary Approaches to Stop Hypertension. As the name suggests, the program was created to help people lower their blood pressure using a healthy diet. We rank DASH as the best diet for weight loss for seniors because 70 percent of adults over 65 have high blood pressure.

The DASH eating plan emphasizes the consumption of essential nutrients like calcium, magnesium and potassium. "The ability to maintain calcium balance worsens and bone loss accelerates after 50 years of age. Your risk of fracture also increases with older age. In fact, several studies have shown that calcium combined with low daily doses of Vitamin D reduces fracture risk and increases bone density," says Mayo Clinic Endocrinologist Dr. Robert Wermers.

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Best (Mostly) Vegetarian Weight Loss Diet: Flexitarian Diet

Often called a semi-vegetarian diet, the Flexitarian diet is a flexible version of a vegetarian diet. Plant-based foods are emphasized, but you can still eat meat occasionally.

A Flexitarian diet may help you get rid of stubborn belly fat. According to one study, adherence to a plant-based diet was associated with lower abdominal fat.

The Flexitarian diet may also help reduce blood pressure, blood cholesterol and the risk of developing Type 2 diabetes.

If you've ever considered going full vegetarian, or even vegan, the Flexitarian diet is a great way to ease into those restrictive diets while also losing weight.

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Jenny Craig is a household diet name, like the Atkins diet or Paleo. Its popularity, to some extent, says a lot about its credibility as an effective weight loss diet.

A typical Jenny Craig plan allots a daily caloric intake of 1,200 (which is very low for almost all adults) to 2,300 calories, depending on your sex, age and weight loss goals. It includes intermittent fasting, with a 10-hour eating window and a 14-hour fasting period. The program also recommends 30 minutes of physical activity five days a week.

A key component of the Jenny Craig diet is the individualized support from Jenny Craig coaches. However, these coaches are not registered dietitians or health professionals. They are previous members of the program who achieved successful weight loss results.

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How We Chose the Best Diets for Weight Loss

In general, we looked for diets that encourage people to consume a healthy variety of foods without demonizing or cutting out complete groups, have science-backed results, focus on actual food rather than diet products and are actually possible for people to stick to.

How to Choose the Best Weight Loss Diet for You

Choosing the best weight loss diet for you requires finding one that gels with your lifestyle and accommodates your personality. It also helps if it aligns with your food preferences. Consider your health status and budget, as well.

Ultimately, you have to set realistic expectations based on everything you know about yourself. What motivates you? Are you organized enough to keep a daily food log? How much spare time can you dedicate to your weight loss goals? Are you willing to count calories every meal? How well can you control your food cravings?

By answering these questions, you'll be in a better position to narrow down your diet plan choices. The more honest you are with yourself, the better your chances of finding an effective weight loss plan that delivers the results you want.

Who Should Avoid Weight Loss Diets

Most weight loss diets are, effectively, just a healthier or lower-calorie way of eating, which makes them generally safe for many people. However, extreme weight loss diets intended to promote rapid weight loss come with added health risks. Consult your physician about your weight loss goals for additional guidance.

People who should avoid weight loss diets include, but aren't limited to:

If you're unsure if a weight loss diet is appropriate for you, talk with your doctor or a registered dietician.

Diets That Help You Burn Belly Fat

Belly fat is notoriously hard to get rid of, and there's an evolutionary reason why. "The body preferentially sends fat to the waist so that the stored energy is near the vital organs in case they need it," says registered dietitian Betsy Opyt, R.D.

If you're looking for a solution to burn off stubborn belly fat, there's good and bad news.

The good news is that burning belly fat to achieve a flatter stomach is possible, and may be enhanced by certain diets.

The bad news, however, is that there's little conclusive scientific evidence to support the idea of targeting belly fat through dieting alone.

"It's impossible to target belly fat specifically when you diet. But losing weight overall will help shrink your waistline; more importantly, it will help reduce the dangerous layer of visceral fat, a type of fat within the abdominal cavity that you can't see but that heightens health risks," says Kerry Stewart, Ed.D., director of Clinical and Research Physiology at Johns Hopkins.

In other words, burning belly fat through dieting requires that you shed total body fat in the process. Nonetheless, there are dieting strategies you can use to burn belly fat faster.

One such strategy is to focus on curbing carbs, rather than fats. When researchers at Johns Hopkins compared the effects of a low-carb diet to a low-fat diet, they found that a low-carb diet led to an average of 10 more pounds of weight loss compared to a low-fat diet. These results suggest that a low-carb diet may be one of the best ways to burn belly fat while also reducing your overall body weight.

Physical activity is another proven way to burn belly fat. "Exercise seems to work off belly fat in particular because it reduces circulating levels of insulin—which would otherwise signal...

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