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The Best And Worst Diets For 2020, According To Science And Ranked By Experts

The Best And Worst Diets For 2020, According To Science And Ranked By Experts

  • Are you interested in trying a diet plan? Let’s see what the experts have to say about the best and worst diets for 2020.
Best And Worst Diets


The battle of the diets in 2020! According to US News and World Report’s, the Mediterranean Diet has taken the number one spot for best diets in 2020. 35 diets were evaluated and ranked based on safety, weight-loss effectiveness, ease to follow, and whether or not the diet was protective against diabetes and heart disease.

Diets will come and go! There are a lot of frustrated dieters trying to find the next or best diet to lose weight. Truth be told, most people will say dieting is difficult because there can be a plethora of rules to follow.

On the other hand, some people need to be able to follow specific diets because of diagnosed conditions, which is why It is important to understand the key difference between clinically-based diets and popular diets perpetuated in the media.

A clinical diet or a therapeutic diet is a meal plan that controls the intake of certain foods or nutrients. It is part of the treatment of a medical condition and is normally prescribed by a physician and planned by a dietitian.

A therapeutic diet is usually a modification of a regular diet and is modified or tailored to fit the nutrition needs of a particular person with a certain condition[1]. An example of a therapeutic diet can be a texture modification, a tube feeding, or a diet that needs to be low in fiber, or high in fat. These diets are usually monitored by a doctor and a dietitian.

Popular diets commercialized in the media, such as the Mediterranean Diet, The Keto, or the Dukan Diet gained popularity, because of the associated weight loss and a trendy lifestyle it brings.

Let’s be clear if it’s trendy to eat a plant-based diet then count me in! However, It’s important to remember that following a lifestyle rather than a strict diet is better for long term success of a particular diet unless told otherwise by a physician.

Here is a list of the Best and Worst Diets of 2020 Ranked According to US News and World Report’s[2]:

  1. Mediterranean Diet
  2. DASH Diet
  3. The Flexitarian Diet
  4. Weight Watchers (WW)
  5. Mayo Clinic Diet
  6. MIND Diet
  7. Volumetrics Diet
  8. TLC Diet
  9. Nordic Diet
  10. Ornish Diet
  11. Vegetarian Diet
  12. The Fertility Diet
  13. Jenny Craig Diet
  14. Asian Diet
  15. Weil’s Anti-Inflammatory tie with Nutritarian Diet
  16. Vegan Diet
  17. The Engine 2 Diet tie with the South Beach Diet
  18. Biggest Loser Diet
  19. Glycemic-Index Diet
  20. Nutrisystem Diet
  21. Zone Diet
  22. Macrobiotic Diet
  23. SlimFast Diet
  24. HMR Program
  25. Optavia Diet
  26. Alkaline Diet
  27. The Fast Diet
  28. Paleo Diet
  29. Raw Food Diet
  30. Atkins Diet
  31. Whole 30 Diet
  32. Keto Diet
  33. Dukan Diet

Have you heard of some of these diets? Chances are, you have probably heard of the majority of these diets.

Perhaps you may have heard of some of these diets because they are shown on mainstream and social media every day and the desired goal of losing weight. One of the last diets on the list is called the ketogenic diet, also known as “the keto diet.”

This diet has gained popularity over the last two years. Some of these diets have been around for many years but have gained national attention through social media and depict a dramatic weight loss effect.

For example, the ketogenic diet was created in 1921 at the Mayo Clinic in Rochester, Minnesota by Dr. Wilder for children with refractory epilepsy[3].

However, over the past couple of years, the keto diet has gained worldwide attention of people who are not diagnosed with epilepsy, but rather for people who want to lose weight.

Let’s see what the experts have to say about the best and worst diets for 2020.

The expert panelists who evaluated the best diets for 2020 are experts in diet, nutrition, obesity, food psychology, diabetes, and heart disease. They range from dietitians, doctors, professors, and psychologists.

They were asked to analyze each diet based on how easy it is to follow; its ability to produce short-term and long-term weight loss; its nutritional completeness; safety; and its potential for preventing and managing diabetes and heart disease.

The Best Diet of 2020 is the Mediterranean Diet

Many have heard of the Mediterranean Diet. This diet or lifestyle is generally seen in populations or countries bordering the Mediterranean Sea. Typically, these populations live longer and suffer less from chronic diseases, such as cancer and cardiovascular disease.

Incorporating physical activity, keeping your weight down, consuming high amounts of vegetables and nuts, and eating a diet low in red meat, sugar and saturated fat can decrease your chances of developing chronic diseases.

The Mediterranean Diet may offer a host of health benefits, including weight loss; heart and brain health; cancer prevention; and diabetes prevention and management. Research shows that when you follow the Mediterranean Diet, you could also keep that weight off while avoiding chronic disease[4].

The Worse Diet of 2020 is the Dukan Diet

The Dukan Diet is not as popular as some of the other diets we have seen in the media. The Dukan Diet is high-protein and low-carbohydrates. This diet is considered a diet devised by Pierre Dukan.

It is worth noting, that depending on your current health status, this diet may not be nutritionally sound and can carry risks to kidney and cardiovascular health. This diet was created based on the premise that counting calories were not the key to weight loss. This diet says protein is the key to weight loss[5].

When you take a look at the pros and cons of the Dukan diet, there are a lot of rules to follow and people who are on this diet could fall short of the nutrients that are needed. Most importantly, this diet could carry side effects not worth trying for some people.

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Other Diets That Came in On Top

#2:The Dash Diet

This diet came in number 2 and tied with the Flexitarian Diet. The Dash Diet stands for Dietary Approaches to Stop Hypertension. This diet is usually heavily promoted by the National Heart, Lung, and Blood Institute to do exactly that[6].

The foods on this diet include fruits, veggies, whole grains, lean protein, and low-fat dairy, which are high in blood pressure-deflating nutrients like potassium, calcium, protein, and fiber. This diet discourages foods that are high in saturated fat, such as fatty meats, full-fat dairy foods, tropical oils, as well as sugar-sweetened beverages and sweets.

#3: The Flexitarian Diet

This diet that tied with the DASH Diet. The name was created by the marriage of two words: flexible and vegetarian. The term was coined more than a decade ago by Dawn Jackson in her 2009 book called, “The Flexitarian Diet: The Mostly Vegetarian Way to Lose Weight, Be Healthier, Prevent Disease and Add Years to Your Life.”

Jackson is a registered dietitian and says, you don’t have to eliminate meat completely to reap the health benefits associated with vegetarianism. She says you can be a vegetarian most of the time, but still, chow down on a burger or steak when the urge hits[7].

Does this sound like another diet/lifestyle we have been hearing in the media lately? Yes, you guessed correctly. This way of life is called a predominantly plant-based lifestyle. This is when people chose to eat a diet rich in whole grains, fruits, vegetables, nuts, and seeds and enjoy meat once in a while.

The good part about this lifestyle is that there are no strict rules. You can decide how often you want to incorporate meat into the diet. A good starting place maybe once a week.

The Bottom Line

If you are interested in trying one of the diets of 2020, it is important to take into consideration how easy the diet is to follow; its ability to produce short-term and long-term weight loss; its nutritional completeness; safety; and the potential for preventing and managing chronic disease.

It is also important to keep in mind that if you are choosing to go on a diet, it is recommended that you do your own research and speak to a doctor that can advise you based on your current health status.

For example, if you are currently a diabetic, suffering from heart or kidney disease, it may not be recommended that you try and extreme diet methods such as the Keto Diet or Dukan Diet.

These diets take extreme measures and may be detrimental to your health. It is always best to consult with proper health professionals who are familiar with the status of your current health.


1. Types of Therapeutic Diets.
2. Best Diets Overall. US News and World Report. 1/17/20.
3. Ketogenic Diets: New Advances for Metabolism-Based Therapies. Curr Opin Neurol. 2012 Apr; 25(2): 173–178.
4. The Mediterranean Diet: From an Environment-Driven Food Culture to an Emerging Medical Prescription. Int J Environ Res Public Health. 2020 Mar; 16(6): 942.
5. What is the Dukan Diet? 1/20/20
6. DASH Eating Plan. 1/20/2020
7. The Flexitarian Diet: The Mostly Vegetarian Way to Lose Weight, Be Healthier, Prevent Disease and Add Years to Your Life
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