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)!


The keto diet has been shown to help people lose weight in the short term; however, the long-term benefits of the diet aren't as clear, according to the Mayo Clinic. The diet is named for ketosis, which is the condition the body goes into when following the plan. In ketosis, the body uses ketone bodies, or water-soluble molecules produced by the liver and the breakdown of fatty tissue for cellular energy as opposed to sugars from ingested carbohydrates. And in some people, this results in weight-loss.
The average American consumes approximately 15.5 pounds of pasta each year—and most of it is the refined white stuff. Unfortunately, this type of noodle is usually void of fiber and micronutrients. Spaghetti squash, on the other hand, boasts only about 40 calories per cup—more than 75 percent fewer calories than a cup of plain pasta—and is an excellent source of vitamin A and potassium. Make this simple swap to jumpstart your weight loss and you’ll be fitting into your skinny jeans in no time! For more swaps to save you calories, don’t miss these 25 Food Swaps That Cut 2,500 Calories a Week.
We recently published an article documenting the grim long-term effects of low-carbohydrate diets, in which we explain the evidence-based research showing that low-carbohydrate diets high in fat and protein including meat, dairy products, eggs, fish, and oil actually worsen diabetes health, increase cancer risk, increase cholesterol, increase atherosclerosis, harden blood vessels, and increase all-cause mortality.

I would just like to share with you that my patients are HORRIFIED if their physicians ask them to cut out “everything white” in their diet. This is what some doctors ask for…essentially asking for the Ketogenic diet and most of my patients are in shock! Not only would I never want to skip a year of my birthday cake, but I wouldn’t ask my patients to either! One slice of cake is certainly not going to harm anyone with diabetes and hopefully you know enough about carbohydrates and their short term effect on BG levels to know this too! I am not a Registered Dietitian, so I couldn’t speak to this diet in regard to children with epilepsy. Are you a Neuro RN? TheDiabetesCouncil did just post another article where 25 Registered Dieticians weighed in regarding the Ketogenic Diet, so I would encourage you all to check that out!
You can certainly still eat red meat once in a while, but choose leaner cuts. Lamb is often the red meat of choice in Greece and other Mediterranean countries. You might like to try: Kofta Kebobs; Grilled Lamb Chops with Mint Quinoa; or Moussaka (Greek eggplant and lamb casserole). For special occasions, I highly recommend Leg of Lamb with Potatoes.
Not to be outdone, oolong tea—a Chinese beverage—can help those who drink it shed up to a pound per week. According to a study in the Chinese Journal of Integrative Medicine, participants who regularly sipped oolong tea lost six pounds over the course of six weeks. What’s more? The tea’s antioxidants are thought to remove harmful free radicals and improve bone health.
Without peer-reviewed clinical trials, many of the benefits remain anecdotal. For instance, Weiss himself has been on a low-carb high-fat (though not strictly ketogenic) diet for more than six months, and claims he does feel much better. But he’s clear about what he knows and what he doesn’t. He’s lost weight and his borderline pre-diabetes is gone.  
When you’re eating the foods that get you there (more on that in a minute), your body can enter a state of ketosis in one to three days, she adds. During the diet, the majority of calories you consume come from fat, with a little protein and very little carbohydrates. Ketosis also happens if you eat a very low-calorie diet — think doctor-supervised, only when medically recommended diets of 600 to 800 total calories.
×