different food diets ever invented in history

From religious fasts to low-carb pamphlets, grapefruit menus, points-based programs, and modern app-guided plans, humans have created a huge range of different food diets to lose weight, control appetite, simplify eating, or pursue better health. Some diets were built around one rule, like “avoid starch.” Others were lifestyle patterns, like the mediterranean diet, that became popular because they were flexible, enjoyable, and easier to maintain.

Before choosing any weight-loss plan, it helps to remember the basic principle: body weight changes when energy intake and energy use shift over time. The CDC describes weight loss as being supported by healthy eating patterns, regular physical activity, enough sleep, and stress management; it also notes that using physical activity while reducing calorie intake helps create the calorie deficit that drives weight loss. (cdc.gov)

This list walks through some of the most influential weight-loss food diets ever invented or popularized in history, with a practical look at how each one works, why people tried it, and what to watch out for.

How to compare different food diets for weight loss

A diet is not automatically effective just because it has a famous name, a strict rule, or a dramatic before-and-after promise. The best weight-loss diet is usually the one you can follow consistently while still getting enough protein, fiber, vitamins, minerals, and enjoyable meals.

When comparing different food diets, look at:

• Food quality: Does it emphasize mostly whole foods, vegetables, fruits, legumes, lean proteins, healthy fats, and minimally processed meals?

• Calorie control: Does it help you eat fewer calories without constant hunger?

• Sustainability: Can you imagine eating this way for months or years, not just days?

• Flexibility: Can it fit your culture, budget, schedule, family meals, and social life?

• Safety: Does it avoid extreme restriction, unnecessary supplements, or medical risks?

• Support: Does it include coaching, planning tools, tracking, or community accountability?

The National Institute of Diabetes and Digestive and Kidney Diseases recommends choosing weight-loss programs backed by science and tailored to your health, preferences, values, and long-term lifestyle. (niddk.nih.gov)

1. Fasting and intermittent fasting

Fasting is one of the oldest eating patterns in human history, long practiced for religious, cultural, and practical reasons. Modern intermittent fasting turns that ancient idea into a weight-loss method by cycling between eating windows and fasting windows.

Common versions include:

• Time-restricted eating: Eating within a set window, such as 8 to 10 hours.

• Alternate-day fasting: Alternating lower-calorie days with regular eating days.

• 5:2 fasting: Eating normally five days per week and reducing calories on two days.

For weight loss, intermittent fasting works mainly because it can reduce total calorie intake. Research reviews have found that intermittent fasting can support weight loss, but it is not magic; many studies show results similar to traditional calorie restriction when total calories are comparable. (nutritionsource.hsph.harvard.edu)

Best for: People who prefer meal timing rules over detailed calorie counting.

Watch out for: Overeating during eating windows, headaches, fatigue, and poor fit for people with certain medical conditions, pregnancy, eating disorder history, or diabetes medications unless guided by a clinician.

2. The Banting diet

The Banting diet is often described as one of the earliest famous low-carbohydrate weight-loss diets. William Banting, a London undertaker, published Letter on Corpulence, Addressed to the Public in the 1860s, describing a plan that limited bread, sugar, starches, and some alcoholic drinks while emphasizing meat, fish, and other lower-carb foods. (commons.wikimedia.org)

In many ways, Banting foreshadowed later low-carb movements. His approach was not about tracking macros with an app; it was about removing the foods he believed promoted weight gain.

Why it appealed: It offered a simple explanation: cut starch and sugar, lose weight.

Modern weight-loss takeaway: Low-carb diets can help some people reduce cravings and calories, but food quality still matters. A low-carb plan based on fish, eggs, vegetables, nuts, olive oil, and minimally processed foods is very different from one built around processed meats and saturated-fat-heavy meals.

3. The Graham diet

The Graham diet, associated with 19th-century reformer Sylvester Graham, promoted plain, plant-forward eating, whole-grain bread, temperance, and a rejection of rich, highly stimulating foods. It was not a modern “weightloss food diet” in the app-and-calorie sense, but it influenced later vegetarian, whole-food, and moral-health diet movements.

For weight loss, the Graham-style idea still shows up today: eat simpler foods, avoid excess sugar and rich processed meals, and build meals around grains, vegetables, and modest portions.

Best for: People attracted to whole-food simplicity.

Watch out for: Over-romanticizing “natural” eating. A diet can be simple and still lack protein, variety, or enough key nutrients if poorly planned.

4. Fletcherism

Fletcherism became popular in the early 20th century and was based on the idea of chewing food very thoroughly before swallowing. The method was named after Horace Fletcher, who promoted slow, mindful chewing as a way to eat less and improve digestion.

As a weight-loss strategy, Fletcherism works less because chewing has special fat-burning powers and more because it slows eating down. Eating slowly can give your body more time to register fullness, making overeating less likely.

Modern weight-loss takeaway: You do not need to count every chew, but eating without rushing can help portion control.

Try this simple version:

• Sit down for meals.

• Put your fork down between bites.

• Eat without scrolling.

• Stop when comfortably satisfied, not stuffed.

5. Calorie-counting diets

Calorie counting became more influential as nutrition science developed tools to measure energy in food. Instead of banning one food group, calorie-counting diets focus on the total energy you eat each day.

The strength of calorie counting is clarity. If you track consistently, you can see how beverages, snacks, sauces, and oversized portions affect your weight-loss progress. The weakness is that tracking can become tedious or obsessive for some people.

Best for: People who like data, numbers, and flexible food choices.

Watch out for: Choosing low-calorie but low-nutrition foods. A 300-calorie meal with protein, vegetables, and fiber will usually support fullness better than 300 calories of candy or soda.

Practical rule: Use calorie counting as a learning tool, not a lifelong punishment.

6. The grapefruit diet

The grapefruit diet, also known historically as the Hollywood diet, became popular in the United States by at least the 1930s. It usually paired grapefruit or grapefruit juice with a strict low-calorie meal plan. Smithsonian’s overview of fad diets notes the grapefruit diet’s rise in the 1930s and places it among several single-food or highly restrictive diet trends. (smithsonianmag.com)

For weight loss, grapefruit itself is not the secret. The diet generally works, when it works at all, because it sharply cuts calories.

Best for: Short-term curiosity only, not long-term nutrition.

Watch out for: Grapefruit can interact with some medications, and very low-calorie plans can be hard to sustain.

Modern upgrade: Enjoy grapefruit as part of a balanced breakfast with protein, such as Greek yogurt, eggs, or cottage cheese, instead of treating it as a miracle food.

7. Very-low-calorie and crash diets

Crash diets have appeared again and again throughout history: broth diets, liquid diets, single-food diets, “three-day” diets, and extreme low-calorie menus. They promise fast weight loss by sharply reducing food intake.

They can produce quick scale changes, especially from water loss and lower food volume. But they are often difficult to maintain and may increase hunger, fatigue, rebound eating, and nutrient gaps.

Best for: Medical settings only when supervised by qualified professionals.

Watch out for: Plans that promise dramatic weight loss without diet quality, behavior change, or follow-up support.

Modern weight-loss takeaway: Fast is not always better. The plan that helps you lose weight and maintain it is more valuable than the plan that gives you the quickest first week.

8. The cabbage soup diet

The cabbage soup diet is another classic restrictive plan. It became known as a short-term diet built around large amounts of cabbage soup plus a limited rotation of other foods. Smithsonian’s history of fad diets identifies cabbage soup dieting as a mid-20th-century weight-loss trend. (smithsonianmag.com)

The reason it may reduce weight temporarily is simple: cabbage soup is low in calories and high in water volume. But the plan is repetitive, nutritionally limited, and not designed for long-term eating.

Best for: Understanding the power of low-calorie, high-volume foods.

Watch out for: Boredom, low protein, and weight regain after returning to normal eating.

Modern upgrade: Keep vegetable soup, but add beans, lentils, chicken, tofu, or fish for protein and make it part of a sustainable meal plan.

9. Low-fat diets

Low-fat diets became especially influential in the late 20th century, when many people began cutting fat to reduce calories and support heart health. A low-fat diet can help with weight loss if it reduces total calories and emphasizes high-fiber, nutrient-dense foods.

However, not all low-fat foods are healthy. Many low-fat packaged products replace fat with refined starches or sugar, which may not improve fullness. NIH research comparing low-fat and low-carb patterns has shown that people can lose weight on both approaches, though individual results vary. (nih.gov)

Best for: People who enjoy grains, fruit, beans, and lower-fat meals.

Watch out for: Cutting healthy fats too aggressively. Nuts, seeds, olive oil, avocado, and fatty fish can be part of a healthy weight-loss diet in appropriate portions.

10. Very-low-fat plant-forward diets

Very-low-fat diets, including some programs associated with heart-health lifestyle medicine, take low-fat eating further by emphasizing fruits, vegetables, whole grains, legumes, and minimal added fats. These diets can create a calorie deficit because they are often high in fiber and low in energy density.

For weight loss, the biggest advantage is volume: you can eat large portions of vegetables, beans, and whole grains for fewer calories than many rich processed foods.

Best for: People who enjoy plant-forward meals and want a structured approach.

Watch out for: Low satiety if protein is inadequate, and difficulty maintaining the diet socially if it becomes too restrictive.

Practical plate idea: Build meals around beans or lentils, vegetables, whole grains, fruit, and a small amount of nuts or seeds if the plan allows.

11. The Atkins diet

The Atkins diet brought low-carb eating back into mainstream weight-loss culture. It limits carbohydrates in phases, often starting with a stricter low-carb stage before gradually adding more foods back.

Mayo Clinic notes that low-carb diets like Atkins may lead to weight loss, especially in the short term, but over the long term they are generally not more effective than standard weight-loss diets. (mayoclinic.org)

Why it appealed: It allowed filling foods like meat, eggs, cheese, and fats while restricting bread, pasta, sweets, and many starchy foods.

Best for: People who feel better with fewer refined carbohydrates and prefer higher-protein meals.

Watch out for: Low fiber, constipation, high saturated fat intake, and difficulty reintroducing carbs without regaining weight.

Modern upgrade: Focus on lean proteins, fish, eggs, tofu, non-starchy vegetables, legumes if tolerated, nuts, seeds, and unsaturated fats.

12. The ketogenic diet

The ketogenic diet is a very-low-carbohydrate, high-fat diet designed to shift the body toward producing ketones. Although ketogenic diets have medical uses, the modern weight-loss version became popular because it can reduce appetite and lead to rapid early scale changes.

Harvard’s Nutrition Source explains that keto weight-loss claims center on depriving the body of glucose and producing ketones from stored fat, while also noting concerns about high saturated fat intake and limited long-term evidence for obesity-specific use. (nutritionsource.hsph.harvard.edu)

Best for: Some people who prefer strict rules and lower-carb eating.

Watch out for: Restriction of fruit, whole grains, and legumes; possible LDL cholesterol changes; constipation; and poor fit for certain medical conditions.

Practical note: Keto should be discussed with a healthcare professional if you have diabetes, kidney disease, heart disease, pregnancy, or take medications affected by diet changes.

13. The mediterranean diet

The mediterranean diet is one of the most widely respected eating patterns for long-term health and weight management. It emphasizes vegetables, fruits, beans, lentils, whole grains, nuts, seeds, olive oil, herbs, fish, seafood, and moderate portions of poultry, eggs, dairy, and wine where culturally appropriate.

Unlike many weight-loss diets, the mediterranean diet is not built around strict exclusion. Harvard’s Nutrition Source describes healthy dietary styles that include Mediterranean-style eating and notes that healthy fats can support heart health and weight loss when used within an overall nutritious pattern. (nutritionsource.hsph.harvard.edu)

Best for: People who want flavorful, flexible meals without extreme rules.

Watch out for: Portion creep. Olive oil, nuts, cheese, and wine can be healthy in context but still calorie-dense.

Weight-loss strategy: Keep the Mediterranean foundation, but use smaller portions of oils, nuts, pasta, bread, and cheese while increasing vegetables and lean protein.

14. WeightWatchers-style points diets

WeightWatchers popularized a structured, flexible approach to weight loss by assigning foods point values and encouraging tracking, portion awareness, and group or digital support. Instead of banning foods, points-based systems guide people toward lower-calorie, higher-satiety choices.

A systematic review summarized in NCBI Bookshelf found that Atkins, Weight Watchers, and Zone achieved modest and broadly similar long-term weight loss, while evidence was not strong enough to declare one popular diet clearly superior. (ncbi.nlm.nih.gov)

Best for: People who want flexibility plus accountability.

Watch out for: Relying only on points without learning hunger cues, meal planning, protein needs, and emotional eating skills.

Modern takeaway: Tracking systems work best when they teach habits you can keep after you stop tracking every bite.

15. The Zone diet

The Zone diet became popular as a macronutrient-balanced plan, often described around a target ratio of carbohydrates, protein, and fat. Its appeal is that every meal is structured to include all three macronutrients, which can help with fullness and blood sugar steadiness.

For weight loss, the Zone diet works when its structure reduces calories and improves food quality. It may be easier for some people than very low-carb or very low-fat diets because it does not eliminate entire macronutrient categories.

Best for: People who like balanced plates and portion formulas.

Watch out for: Overcomplicating meals. If the ratio becomes stressful, a simpler plate method may work better.

Simple version: Fill half your plate with non-starchy vegetables, one quarter with lean protein, and one quarter with high-fiber carbohydrates, then add a small amount of healthy fat.

16. The South Beach diet

The South Beach diet is a phased lower-carb diet that became popular in the early 2000s. It focuses less on unlimited fat than some earlier low-carb plans and more on choosing lean proteins, unsaturated fats, non-starchy vegetables, and lower-glycemic carbohydrates as foods are reintroduced.

Why it appealed: It promised structure without requiring permanent carbohydrate elimination.

Best for: People who want to reduce refined carbs but still include some fruit, whole grains, and legumes later.

Watch out for: Treating the first phase as a crash diet or cycling on and off the strict phase repeatedly.

Modern upgrade: Skip the “quick fix” mindset. Use the plan’s best idea—fewer refined carbs and more lean protein and vegetables—without making your diet unnecessarily rigid.

17. The DASH diet

DASH stands for Dietary Approaches to Stop Hypertension. It was designed for blood pressure and heart health, but it can also support weight loss when calories are adjusted. DASH emphasizes fruits, vegetables, low-fat dairy, whole grains, fish, poultry, beans, nuts, and reduced sodium.

NHLBI says the DASH eating plan can be used with appropriate calorie levels to maintain a healthy weight or lose weight if needed, and DASH with physical activity has been studied for benefits including weight loss and blood pressure reduction. (nhlbi.nih.gov)

Best for: People who want a balanced, evidence-informed plan, especially if blood pressure is a concern.

Watch out for: Assuming “healthy” portions are unlimited. DASH foods still need portion awareness for weight loss.

Weight-loss strategy: Use DASH food groups, but choose a calorie level that matches your goal.

18. The TLC diet

The TLC diet, or Therapeutic Lifestyle Changes diet, was created by the National Heart, Lung, and Blood Institute to improve cholesterol numbers. It focuses on lowering saturated fat, trans fat, and dietary cholesterol while increasing heart-healthy habits. (nhlbi.nih.gov)

For weight loss, TLC can help when it reduces calorie-dense foods such as fatty meats, fried foods, high-fat dairy, and heavily processed snacks.

Best for: People who want weight loss alongside cholesterol-conscious eating.

Watch out for: Replacing high-fat foods with refined low-fat snacks.

Modern upgrade: Choose oats, beans, lentils, vegetables, fruit, fish, skinless poultry, low-fat dairy if tolerated, and small portions of nuts and healthy oils.

19. The Paleo diet

The Paleo diet is based on the idea of eating foods imagined to resemble pre-agricultural diets: meat, fish, eggs, vegetables, fruit, nuts, and seeds, while avoiding grains, legumes, dairy, refined sugar, and many processed foods.

Harvard’s Nutrition Source notes that some randomized controlled trials have shown short-term benefits from Paleo-style diets, including greater weight loss and reduced waist circumference, but the diet’s restrictions and long-term evidence require caution. (nutritionsource.hsph.harvard.edu)

Best for: People who want to cut ultra-processed foods and focus on whole foods.

Watch out for: Avoiding legumes and whole grains unnecessarily, eating too much red meat, or making every meal meat-centered.

Weight-loss strategy: Make vegetables the largest part of the plate, not an afterthought.

20. The Volumetrics diet

Volumetrics was developed by nutrition researcher Barbara Rolls and focuses on calorie density: choosing foods that provide more volume for fewer calories. Penn State Extension explains that Volumetrics encourages attention to calorie density as a way to support a healthier diet and body weight. (extension.psu.edu)

This is one of the most practical weight-loss concepts because it helps reduce hunger without tiny portions.

Low-calorie-density foods include:

• Broth-based soups

• Leafy greens

• Non-starchy vegetables

• Fruits with high water content

• Beans and lentils

• Low-fat yogurt or cottage cheese

Best for: People who dislike feeling deprived.

Watch out for: Adding too many calorie-dense toppings, oils, dressings, and desserts after building a high-volume meal.

Simple rule: Start lunch and dinner with vegetables or soup before higher-calorie foods.

21. Vegetarian and vegan weight-loss diets

Vegetarian and vegan diets remove some or all animal products. They can support weight loss when built around vegetables, fruits, legumes, whole grains, tofu, tempeh, nuts, seeds, and minimally processed foods.

A meta-analysis of randomized controlled trials found that vegetarian diets were associated with weight reduction, with vegan diets showing a larger average reduction than lacto-ovo vegetarian diets in the included studies. The Academy of Nutrition and Dietetics has also stated that appropriately planned vegetarian and vegan dietary patterns for adults can be nutritionally adequate and may offer cardiometabolic benefits. (pubmed.ncbi.nlm.nih.gov)

Best for: People motivated by health, ethics, environment, or plant-forward eating.

Watch out for: Vegan junk food. A plant-based diet can still be high in calories, refined starches, sugar, and oils.

Weight-loss strategy: Prioritize protein at each meal: beans, lentils, tofu, tempeh, edamame, seitan, soy milk, or high-protein plant-based options.

22. Macrobiotic diets

Macrobiotic diets became popular in the 20th century and are often associated with whole grains, vegetables, beans, sea vegetables, soups, and simple meals influenced by Japanese dietary traditions. Smithsonian’s fad-diet history notes macrobiotic dieting among the diet movements that rose during the 1960s. (smithsonianmag.com)

For weight loss, macrobiotic eating may help because it reduces processed foods and emphasizes simple, high-fiber meals. However, strict versions can become nutritionally limiting.

Best for: People who enjoy whole grains, soups, vegetables, and structured simplicity.

Watch out for: Overly restrictive versions that exclude too many foods or make eating socially difficult.

Modern upgrade: Keep the emphasis on whole foods, but include enough protein, healthy fats, calcium-rich foods, and vitamin B12 sources if animal foods are limited.

23. The Whole30-style elimination diet

Whole30-style diets remove sugar, alcohol, grains, legumes, dairy, and many processed foods for a short period, then reintroduce foods. Although often marketed as a reset rather than a classic weight-loss diet, many people use it to lose weight because it sharply reduces ultra-processed foods and eating occasions.

Best for: People who want a short-term structure to identify habits and food triggers.

Watch out for: Treating elimination as permanent without a medical reason. Removing nutritious foods like beans, lentils, yogurt, oats, and whole grains is not necessary for everyone.

Weight-loss takeaway: The most useful lesson may be awareness: how often you snack, drink calories, eat sweets, or rely on convenience foods.

24. Meal-replacement and portion-controlled diets

Meal replacements have existed in many forms, including shakes, bars, frozen meals, and portion-controlled programs. Their main advantage is simplicity: they reduce decision fatigue and make calories easier to control.

Best for: Busy people who need structure and predictable portions.

Watch out for: Poor transition planning. If you lose weight using replacements but never learn regular meal skills, maintenance can be difficult.

Modern upgrade: Use meal replacements as a temporary tool, then practice building simple meals with protein, produce, fiber-rich carbohydrates, and healthy fats.

Good transition meals include:

• Eggs with vegetables and fruit

• Greek yogurt with berries and nuts

• Chicken or tofu salad bowl

• Lentil soup with a side salad

• Salmon, roasted vegetables, and potatoes

25. High-protein diets

High-protein diets focus on increasing protein from foods such as poultry, fish, eggs, lean meat, Greek yogurt, cottage cheese, tofu, tempeh, legumes, and protein powders when needed. They may be low-carb, moderate-carb, low-fat, or flexible.

For weight loss, protein is useful because it supports fullness and helps preserve lean mass during a calorie deficit, especially when paired with resistance training.

Best for: People who feel hungry on low-protein diets.

Watch out for: Ignoring fiber. A high-protein diet without vegetables, fruit, beans, or whole grains can cause digestive problems and may be hard to sustain.

Simple target habit: Include a protein source at breakfast, lunch, and dinner instead of saving most protein for one meal.

26. Low-glycemic and low-sugar diets

Low-glycemic and low-sugar diets focus on reducing foods that rapidly raise blood sugar, especially refined grains, sweets, sugary drinks, and desserts. They often encourage high-fiber carbohydrates such as beans, lentils, oats, barley, vegetables, and whole fruit.

For weight loss, the benefit comes from improving food quality and reducing calorie-dense sweets and refined snacks.

Best for: People who struggle with sugar cravings or energy crashes.

Watch out for: Assuming every low-glycemic food is low-calorie. Nuts, oils, cheese, and dark chocolate may fit some plans but still require portions.

Modern strategy: Replace sugary drinks first. Liquid calories are often easier to reduce than full meals.

27. Nordic-style diets

Nordic-style diets emphasize foods associated with Nordic regions, such as oats, rye, barley, root vegetables, berries, cabbage, legumes, fish, and rapeseed or canola oil. Like the mediterranean diet, this pattern is less about crash restriction and more about consistent, high-quality food choices.

For weight loss, Nordic-style eating can help by increasing fiber and reducing heavily processed foods.

Best for: People who enjoy hearty whole grains, fish, berries, and seasonal produce.

Watch out for: Portions of breads, cheeses, butter, and baked goods if weight loss is the goal.

Practical plate: Fish or legumes, cabbage or leafy vegetables, roasted root vegetables, and a small serving of rye or barley.

28. Flexible dieting and macro tracking

Flexible dieting is a modern tracking approach that focuses on daily calories and macronutrients—protein, carbohydrates, and fat—while allowing a wide range of foods. It is popular among fitness communities because it combines structure with choice.

Best for: People who want control without banning favorite foods.

Watch out for: Turning food into only numbers. Fiber, micronutrients, meal timing, cooking skills, and emotional satisfaction still matter.

Weight-loss strategy: Set a protein goal, a calorie range, and a fiber goal, then leave room for enjoyable foods in moderate portions.

Which weight-loss diet is “best”?

There is no single best diet for every body, every culture, or every lifestyle. The strongest pattern across diet history is that people can lose weight on many different food diets if the plan helps them eat fewer calories, feel satisfied, and continue long enough to build habits.

A balanced diet like the mediterranean diet may work beautifully for one person because it is flexible and flavorful. Intermittent fasting may work for another person because it reduces late-night snacking. A high-protein or Volumetrics-style plan may work for someone who needs more fullness. A points-based program may work for someone who wants accountability.

The real question is not, “Which diet is most famous?” It is:

• Can I follow this safely?

• Can I afford it?

• Does it include foods I enjoy?

• Does it help me control calories without constant hunger?

• Can I maintain a version of it after the weight-loss phase?

• Does it support my health beyond the scale?

Final weight-loss takeaway

History proves that diet trends change, but the fundamentals repeat. The most sustainable weight-loss food diets usually combine calorie awareness, whole foods, enough protein, plenty of fiber, regular movement, sleep, and a plan for real life.

If you are choosing among different food diets, start with the least extreme option that fits your routine. Build meals around lean protein, vegetables, fruit, beans or whole grains, and healthy fats. Then adjust portions, timing, or structure based on your hunger, progress, and health needs.

For people with diabetes, kidney disease, heart disease, pregnancy, eating disorder history, or medications affected by food intake, a healthcare professional or registered dietitian can help tailor a safer plan before making major changes.