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)!
Rich in low-starch vegetables, fruit, healthy fats (mostly from olives and olive oil), nuts, seeds, whole grains, legumes, and fish, the Mediterranean diet eschews simple sugars and refined starches and is low in red meat. Interested in embarking on the diet for yourself? Read through to see a Mediterranean diet shopping list, what it's like to be on the diet, and why it's so easy to follow.
Meal planning also causes you to look at your calendar and consider everyones schedule. Grocery shopping can again become part of the family routine with everyone contributing to the meal. You’ll also notice a change in your weekly food budget. Susan pointed out that she had, “Given a presentation on the cost of buying food and cooking meals at home saved $1,200 a year versus eating out. Eating out on average costs people about $2,000 a year. Yes, there are some up front costs when buying the spices or equipment you may need but the second time you go to use them, you are saving instead of spending.”
At the first visit, participants were instructed how to follow the LCKD as individuals or in small groups, with an initial goal of ≤20 g carbohydrate per day. Participants were taught the specific types and amounts of foods they could eat, as well as foods to avoid. Initially, participants were allowed unlimited amounts of meats, poultry, fish, shellfish, and eggs; 2 cups of salad vegetables per day; 1 cup of low-carbohydrate vegetables per day; 4 ounces of hard cheese; and limited amounts of cream, avocado, olives, and lemon juice. Fats and oils were not restricted except that intake of trans fats was to be minimized. Participants were provided a 3-page handout and a handbook  detailing these recommendations. Participants prepared or bought all of their own meals and snacks following these guidelines.
On the ketogenic diet, carbohydrates are restricted and so cannot provide for all the metabolic needs of the body. Instead, fatty acids are used as the major source of fuel. These are used through fatty-acid oxidation in the cell's mitochondria (the energy-producing parts of the cell). Humans can convert some amino acids into glucose by a process called gluconeogenesis, but cannot do this by using fatty acids. Since amino acids are needed to make proteins, which are essential for growth and repair of body tissues, these cannot be used only to produce glucose. This could pose a problem for the brain, since it is normally fuelled solely by glucose, and most fatty acids do not cross the blood–brain barrier. However, the liver can use long-chain fatty acids to synthesise the three ketone bodies β-hydroxybutyrate, acetoacetate and acetone. These ketone bodies enter the brain and partially substitute for blood glucose as a source of energy.
"What I don't like about any commercial diet is that the focus is not on your actual food choices," Hogan said. "It's about calories or points or numbers, and that really takes away from your ability to be in tune with your hunger cues and your fullness cues and what you're really craving. If we become more in tune with those things, we naturally consume how much the body needs. Paying too much attention to numbers takes away from that."
It’s easy to stick with. A diet only works if it’s doable. That means everyone in your family can eat it and you can eat in this style no matter where you go (to a restaurant for dinner, to a family event). With its flavors and variety of foods that don’t cut out any food group, this is one such eating plan. "It is an appealing diet that one can stay with for a lifetime,” Dr. Cohen says.
The ketogenic diet is a mainstream dietary therapy that was developed to reproduce the success and remove the limitations of the non-mainstream use of fasting to treat epilepsy.[Note 2] Although popular in the 1920s and 30s, it was largely abandoned in favour of new anticonvulsant drugs. Most individuals with epilepsy can successfully control their seizures with medication. However, 20–30% fail to achieve such control despite trying a number of different drugs. For this group, and for children in particular, the diet has once again found a role in epilepsy management.
Yet it’s an incredibly well-rounded way to lose weight that ditches gimmicks and doesn’t require calorie or macronutrient counting as other diets do. And with the emphasis on healthy fat, it’s satisfying, too. That said, the 2019 U.S. News & World Report Best Diets ranked the Mediterranean diet as No. 1 for Best Diets Overall and it ranks 17 in their list of Best Weight-Loss Diets. (3) The reviewers note that it’s not a slam dunk, and all depends on how you eat. Even healthy diets like the Mediterranean aren’t free-for-all eating plans.
Although white potatoes offer some potassium and fiber, sweet potatoes reign supreme in the nutrition department, meaning you should consider adding sweet potatoes to your diet. A large sweet potato contains around 4 grams of satiety-boosting protein, 25 percent of the day’s belly-filling fiber, and 11 times the recommended daily intake of vitamin A. What’s more? It’s less than 200 calories.
Dr. Reynolds reviewed numerous research studies on ketogenic diets,6 and he has found that most studies show that the drop in blood sugar is typically short-term—only lasting during the initial three months or so—but does not last. "So it is very hard to encourage ketogenic diets when we have no evidence that they work over longer periods of time," he tells EndocrineWeb.
My pick for the healthiest meal plan for diabetes? My favorite is the Mediterranean Diet. It’s high in fiber, low in saturated fats and includes no processed foods which is the challenge for all of us at this point in history. If we could all eat like they do in Italy and Greece! Think of Sicily and the coasts of Greece where their diet consists of fresh fish, fresh fruits and vegetables, nuts, beans, seeds, olives and olive oil, lean meats such as chicken and pork, some eggs and little red meat. The American Heart Association recommends it as well as the American Diabetes Association as being one healthy diet choice for people with diabetes.
With virtually no food groups as off-limits, DASH offers much more flexibility than other popular diet plans. It can also aid in weight loss and weight maintenance, given its emphasis on overall health. With all its praiseworthy qualities, you’d think everyone would be following a DASH diet plan. But here’s the surprising truth—less than 2 percent of the population actually follows the DASH diet.
Walnuts are packed with tryptophan, an amino acid your body needs to create the feel-great chemical serotonin. (In fact, Spanish researchers found that walnut eaters have higher levels of this natural mood-regulator.) Another perk: "They're digested slowly," said Dr. David Katz, director of the Yale Prevention Research Center. "This contributes to mood stability and can help you tolerate stress."
Type I diabetes is usually inherited and type I diabetics usually have to inject insulin to maintain proper levels of blood glucose. The other 90% to 95% of people with diabetes are type II diabetics.  In this version, the body doesn’t produce enough insulin for proper function or cells in the body do not react to insulin and take in sugar from the blood.
Keep eating low carb to continue losing weight, feeling good and becoming healthier!Try making any of our hundreds of recipes available on the site. We make sure each and every recipe is delicious, nutritious and will keep you under your daily carb limit, even if you go for seconds. In addition, we provide step-by-step instructions to make the process as easy as possible. If you ever run into any issues or have any questions, be sure to leave a comment or contact us directly! We’re always happy to help.
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.
“This is a great way of eating that I highly recommend to many clients, and I even model in my own life,” says Elizabeth Shaw, RDN, who is in private practice in San Diego and is the co-author of Fertility Foods Cookbook. “Since the premise of the diet is designed to help people who have high blood pressure, low-sodium foods are recommended. But considering that most Americans exceed their daily sodium levels anyway, it’s not surprising that dietitians recommend this style of eating for treating many different conditions, such as heart disease and obesity.”
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.
Keep a food diary. In it, record your current daily eating habits. Write down what you eat for every meal of the day, and take note if you skip a meal. If you regularly skip breakfast, jot this down as well. Also write down any snacks you eat, even if you do this mindlessly - say, while watching TV. This diary will allow you to see where you stand right now in terms of eating practices and where you can start to make changes.
Fairly recently, the diet was introduced as a weight-loss diet by an Italian professor of surgery, Dr. Gianfranco Cappello of Sapienza University in Rome. In his 2012 study, about 19,000 dieters received a high-fat liquid diet via a feeding tube inserted down the nose. The study showed an average weight loss of more than 20 pounds in participants, most of whom kept it off for at least a year. The researchers reported a few minor side effects, like fatigue.