10 Diets That Work Fast

Wondering which diet to choose? These days there are many diets specifically designed to lose weight quickly and without gaining it back. Here are 10 diets that work fast.

Crash or fad diets, quick-loss diets, rapid weight loss diets, and flash or quick-fix diets are just some of the many popular names for weight loss programs and plans that promise to help you achieve weight loss fast and with long-term results. But are they really efficient?

And do they really work for everyone?

White plate with word diet composed of slices of different fruits and vegetables

To achieve satisfactory results and without seriously affecting your health, you should follow an appropriate diet plan based on your body’s unique nutritional needs. Listed below are some of the most popular diets that work fast and that actually help people to lose weight. Choose the one that suits you best.

1. Low-Carb Diet

Young Woman eating strawberries

The low-carb diet focuses on low carbohydrate content foods and promises to lose weight quickly.

This diet involves eating foods that are low in carbs and fats but rich in minerals and vitamins such as broccoli, spinach, tomatoes, herbs, strawberries, chicken breast, sea bass, milk, etc.

A low-carb diet presumes that excessive carbohydrate consumption can cause insulin levels to become highly unbalanced, which in turn may lead to excess weight gain.

With this diet approach, 10 percent of your daily calorie intake comes from carbohydrates, 60 percent comes from fat, and 30 percent from protein. You should consume lean proteins and healthy mono and poly-unsaturated fats, such as olive oil, flax oil, fish oil, nuts, seeds, and peanut butter.

There are, however, many different types of low-carb diets, each allowing different kinds and amounts of carbohydrates. In general, they all restrict similar foods such as grains (flour, pasta, and bread), beans, certain fruits, and starchy vegetables.

2. Zone Diet

Zone diet promises to lose 1 to 2 ponds a week. It works on balancing the daily intake of carbohydrates, fats, and proteins, and considers portion control as one of the most important keys to lose weight.

This type of diet is focused on maintaining your insulin levels stable or “in the zone”, that is to say not too high and not too low, which allows you to lose weight and keep your energy high.

The Zone diet consists of consuming 40 percent carbohydrates, 30 percent fat, and 30 percent proteins. A zone calculator is used to determine the exact amount of carbohydrates, fat and protein that you can consume in a 24 – hour period.

As far as portion control is concerned, “the only measuring tools you need are your hand and your eye”, says Zone diet creator Barry Sears. At the beginning you might use a kitchen scale, but than you should get used to estimating and “eyeballing” portion sizes by yourself.

The Zone diet recommended daily allowance of calories is 1200 calories for women and 1500 calories for men.

3. Volumetrics Diet

Smiling Woman and green grape

This diet focuses on satiety or on the feeling of fullness and satisfaction after you have finished eating.

It is based on eating low-density foods, which are low in calories but high in volume. These foods can fill up your stomach and make you feel fuller faster and for a longer period of time.

The Volumetrics diet actually works on lowering energy intake without reducing the amount of food you eat. Foods with high water content, such as watermelons or grapes, promote a feeling of satisfaction and fullness even with low number of calories per bite, and they allow you to eat larger portions. They help you keep hunger at bay.

High-energy-dense foods instead contain plenty of calories and are low in fiber and water. They take up relatively little stomach space and they don’t create feelings of satiety until you’ve overeaten.

According to the Volumetrics Eating Plan food is divided into 4 categories:

  • Category 1 (very low-energy-dense foods):

Most water and fiber rich foods such as fresh fruits and non-starchy vegetables, nonfat diary products, and broth-based soups;

  • Category 2 (low-energy-dense foods):

Starchy fruits and veggies, grains, pasta, rice, beans, breakfast cereal, fish, low-fat meat, legumes, and low-fat mixed dishes;

  • Category 3 (medium-energy-dense foods):

Meat, cheese, pizza, French fries, salad dressing, bread, pretzels, ice cream, and cake;

  • Category 4 (high-energy-dense foods):

Crackers, chips, chocolate candies, cookies, nuts, butter, and oil;

To lose weight, you should stick to first two categories, reduce portion sizes in category 3, and keep category 4 foods to a minimum.

4. South Beach Diet

The South Beach Diet claims that you can lose 8 to 13 pounds within the first two weeks, and then continue dropping 1 to 2 pounds a week. The number of pounds you lose will depend on your starting weight.

This diet plan allows you to choose from a wide variety of items and it does not involve counting calories, fat grams, carbohydrates, or measuring portion sizes. It comprises three meals a day, two snacks and one high-protein desert.

The South Beach Diet is focused on replacing bad carbs and bad fats with good carbs and good fats. Eating these foods in moderation will help you lose weight and prevent you from gaining it back again.

The diet program consists of three phases. In the first phase carbohydrates are almost completely eliminated. During the second phase, they are increased to 27 percent, while the third phase raises the carbohydrate consumption to 28 percent of your total daily calorie intake. To maintain weight, you should follow the third phase plan for the rest of your life.

5. Atkins Diet

Diets That Work Fast

According to the Atkins Diet Plan, you can lose up to 15 pounds within two weeks.

This diet restricts carbohydrates such as bread, potatoes, rice, chocolate, chips, cereals and sugar, and allows eating high protein foods (meat, poultry, fish and eggs) and high-fat foods (cream, butter, cheese).

“When fat is used as fuel, as it is on a low-carbohydrate diet, it gets mobilized. It does not accumulate, so weight and cholesterol drop”, says Atkins.

The Atkins Diet consists of 4 phases: the induction phase, the ongoing weight loss phase, the pre-maintenance phase and the lifetime maintenance phase.

In the first phase you can eat only 20 grams of carbohydrates per day, 12 to 15 of which must come from vegetables high in fiber. In the second phase carbohydrates are gradually increased to 35 grams per day, while in the third phase you can increase your carbohydrate consumption by 10 grams each week, as long as you continue to maintain your weight. The forth or the life time maintenance phase allows you to eat more foods than in the first 3 phases, while still limiting the amount of carbohydrates.

Alcoholic drinks are strictly prohibited during the induction stage. Moderate amounts of alcohol are allowed only during the maintenance phase.

6. Cabbage Soup Diet

The Cabbage Soup Diet can be considered a fad diet as it consists of consuming cabbage soup for one whole week. It is certainly a diet that works fast.

It lasts only seven days and it is extremely low in calories and high in fiber. The followers of this diet claim that they can lose as much as 10 pounds in only one week and that no exercise is required.

This diet program involves the addition of certain foods every day.

1. The first day you can consume all fruits, except bananas;

2. The second day you are allowed to eat raw or cooked vegetables of your choice;

3. The third day you can eat all fruits and vegetables that you want, with the exclusion of bananas and potatoes;

4. The forth day you can eat as many as 8 bananas;

5. The fifth day you can couple the cabbage soup with beef and tomatoes;

6. The sixth day you are allowed you to include beef and vegetables, but no potatoes;

7. On the final day you can eat your cabbage soup with rice, fruit juices and vegetables;

7. The Grapefruit Diet

Diets That Work Fast

The Grapefruit Diet is one of the best diets to lose weight quickly. It promises to drop 10 pounds in less than 2 weeks.

This diet is low in calories and low in fat and it requires you to cut out carbohydrates. You are not allowed to eat sweet fruits, potatoes, white onions, celery, cereal, peas, corn or other starchy vegetables, grains and cereals, pasta, potato chips, corn chips, celery, low fat salad dressing, peanut butter, jam, or pretzels.

You are allowed to consume red onions, broccoli, bell peppers, radishes, carrots, spinach, lettuce, cucumbers, tomatoes, cabbage, green beans, fish, lean meats, chicken, bacon, pork chops, no-bean chili, mayonnaise, cheese, coleslaw, squash, eggs, regular salad dressing, dried nuts, and hot dogs.

Food combinations play an important role in this diet. The diet creators claim that the right combination of recommended foods can help burn off excess body fat quickly and without much effort. In addition to this, you should never eat between meals. The goal is to eat until you are perfectly full or satisfied as this will prevent you from feeling hungry later on in the day.

During this diet, grapefruit or grapefruit juice is consumed at every meal. Grapefruit is necessary because it contains a fat-burning enzyme that helps the body use fat for energy. That’s why this diet allows some of the foods that are high in fat and protein.

For best results, the Grapefruit Diet should be followed for 12 days. If you wish to continue, you must wait 2 days before starting again.

8. The 3 Day Diet

The 3 Day Diet, also referred to as the Cardiac Diet, is meant for rapid weight loss. It is often used in hospitals for cardiac patients who need to lose large amounts of weight before having heart surgery.

Proponents of this diet claim that you can drop 10 pounds in three days and that you can manage to lose 40 pounds in one month.

Being extremely low in calories, it is unhealthy to follow this diet for more than 3 days. After the 3 day period, you should return to your normal food intake for about four to five days. Only then you can repeat this diet again.

This diet consists of eating moderate portions of tuna, lean meat, grapefruit, toast, eggs and vegetables. Portions must be eaten exactly as specified in the diet plan. Only salt, pepper, and ketchup can be used to season foods and no sugar is allowed. Dieters are encouraged to drink 8 glasses of water a day.

The 3 Day Diet Meal Plan:
Day 1


  • Black coffee or tea, with 1-2 packets Sweet & Low or Equal
  • ½ grapefruit or juice
  • 1 piece toast with 1 tablespoon peanut butter


  • ½ cup tuna
  • 1 piece toast
  • Black coffee or tea, with 1-2 packets Sweet & Low or Equal


  • 3 ounces any lean meat or chicken
  • 1 cup green beans
  • 1 cup carrots
  • 1 apple
  • 1 cup regular vanilla ice cream
Day 2


  • Black coffee or tea, with 1-2 packets Sweet & Low or Equal
  • 1 egg
  • ½ banana
  • 1 piece toast


  • 1 cup cottage cheese or tuna
  • 8 regular saltine crackers or 1 piece toast


  • 2 beef franks
  • 1 cup broccoli or cabbage
  • ½ cup carrots
  • ½ banana
  • ½ cup regular vanilla ice cream
Day 3


  • Black coffee or tea, with 1-2 packets Sweet & Low or Equal
  • 5 regular saltine crackers
  • 1 ounce cheddar cheese
  • 1 apple


  • Black coffee or tea, with 1-2 packets Sweet & Low or Equal
  • 1 boiled egg
  • 1 piece toast


  • 1 cup tuna
  • 1 cup carrots
  • 1 cup cauliflower
  • 1 cup melon
  • ½ cup regular vanilla ice cream

9. Scarsdale Medical Diet

Diets That Work Fast

The Scarsdale Diet is an excellent way to lose weight without feeling hungry. The regimen is strict, but it doesn’t require counting calories, weighing, or measuring portion sizes. It should not be followed for more than two weeks in a row, but the proponents of this diet claim that during this period you can lose up 7 to 15 pounds.

The Scarsdale Diet is based on eating lean protein and low-carbohydrate foods such as fresh fruits, vegetables, salads, and lean meat. Breakfast generally consist of coffee, tea, one half grapefruit, and a slice of protein bread.

After 14 days of following the Scarsdale Medical Diet (SMD) plan, dieters should switch to “Keep Trim” phase for the next 2 weeks. During this period you can plan your own menus. A slightly higher calorie intake is permitted and a few additional foods are allowed.

You can continue repeating the SMD and Keep Trim cycle until you reach desired results.

The Scarsdale diet plan allows for a daily calorie intake of 850 to 1000 calories during the SMD, and between 1000 and 1200 during the Keep Trim phase.

In this diet you must eat exactly what is specified for breakfast, lunch and dinner, and avoid using oil, mayonnaise, or other rich dressings to season your salads. Alcohol is absolutely forbidden.

Even to this day, this 14 days diet plan is one of the most effective diets ever.

10. Flat Belly Diet

The Flat Belly Diet promises to help you drop up to 15 pounds in 32 days and lose belly fat permanently. It is focused on reducing unhealthy fat located deep inside your abdomen.

This diet consists of eating monounsaturated fatty acids (MUFAs) at every meal in order to eliminate belly fat, promote satiety and fullness, and prevent overeating. MUFAs are found in foods like olives, nuts, avocados, dark chocolate, seeds, soybean, flax, and olive and sunflower oils.

There are two parts to the Flat Belly Diet: a four-day anti-bloat jumpstart period and a four week eating plan.

The four-day anti-bloat jumpstart period  serves to reduce bloating and make you lose weight almost immediately. This phase allows only 1,200 calories a day and it forbids salt, processed foods, high-carb foods and gas-producing foods such as cabbage, onions, and legumes. It does not permit coffee, tea, sugar alcohols, and carbonated drinks, but it encourages the dieters to drink two liters of “sassy water” (a mix of spices, herbs, cucumber, and lemon).

The four-week eating plan consists of consuming four 400-calorie meals every four hours, each containing MUFA components. During this stage, dieters are provided with a list of 28 interchangeable mix-and-match breakfasts, lunches, dinners and snack packs, along with portion sizes and calories. There are eighty recipes and they all include full nutritional information like total calories, protein, carbohydrates, total fat, saturated fat, cholesterol, sodium and fiber. The key ingredients are fish, veggies, legumes, fruits, whole grains, and olive oil.

Consult your doctor

To keep your body healthy and in good shape, please consult your doctor before undertaking any of the above diets and remember that food depravation can have dangerous physical and psychological effects. Choose a healthy diet that will satisfy your body’s nutritional needs and exercise as much as you can.

If you have any other good diets to suggest, please leave a comment below and don’t forget to share this post with other people who are in search of weight loss diets that work.

How To Break Free From Yo-Yo Dieting

Yo-yo dieting is a trap that is simple to fall into but challenging to escape.You may learn to embrace yourself as you are and break bad habits by following these three steps.

Your personal version of being healthy will become a part of who you are once you implement these steps and intentionally design a healthier lifestyle that is special to you. It won’t be something you strive for; it will just come naturally.


This article is for informative purposes only and does not in any way attempt to replace the advice offered by an expert on the subject.

About the author


Jessica is a translator who has lived for many years in Asia and South America. She now lives and works in Europe, while preparing her new journeys. She enjoys traveling, meeting new people, exploring different cultures and foods, and being in love.


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    • Hey jo!….* your question has a aws ‘jay!’ Go for a easy and simple diet not one that makes you feel hungry or weak but one that works slower and keeps your bellie ‘happy!’ Way do you ask?! (Do you feel tired and hungry at most diets!) Ho does not! So if I was you I will go for the points diet so you can choose your food and not want a sweet and feel bad! So jha and the best part is that you can work out and feel good for not cheating on your diet!….* ooouuu and one more thing is if you want to keep toning (so I think you have!) Dose not mean you need to lose weight , it just means you have weight from working out so what about the number ‘that is a very good thing!’

  • My daughter is 11 amd her weight is 130 pounds I want some diet for her which help her to reduce her bady fat thanks

    • Maybe you should take your daughter to the doctor to see if she needs to be put on a weight lose diet first because if you don’t you may DAMAGE her! Because she is still GROWING! What kind of mother puts that type of media driven garbage in her own kid’s head?! It’s not enough that there’s peer pressure and media telling her that she’s not good enough that she has to get it at home?! Maybe instead of restricting her diet, go for a walk with her after dinner every night and start good exercise and eating habits together.

    • Hey ayesha :), my names daniel and ive been studying dieting and meds and workouts for nearly 5 years now, so trust me. At her age she’s gonna be a lil chubby. She doesn’t need any special diet. She’s a kid. If she’s interested in losing weight try having her drop soda or any other high sugar content foods and drinks. She’ll be fine

  • I am 14 looking to lose around 25 pounds.. I am very picky and I don’t like a lot of foods. I’m looking for somthing that fast and easy, and I do workout. Please help me to look for a diet that’s fast, easy, wih not a lot of different foods. Thanks.

    • I’m very picky too, but if you don’t open to other options you’re not gonna get anywhere. I recommend the cabbage diet… it gives great results, and QUICK!

  • The cabbage diet really works, though it is kinda of nasty, but great results. I think I’m going to do the 3 day diet… we’ll see how that goes

  • I have a? For the cabbage diet, for each day, am I suppose to eat three meals of the cabbage soup? Like breakfast lunch and dinner cabbage soup?

  • Okay, so I’m 17 and had the horrifying news that I was almost 200 pounds about 2 ago. I got a gym membership and am going about 3-4 times a week. But I have a question, with the cabbage diet, can I add spices so that it doesn’t taste plain? Not sugar or anything but maybe something?

  • Im actually excited about starting the 3 day diet! I did some terrible and unhealthy and painful things to try and lose weight but not too long ago I decided it was time to stop and get real.

  • So I’m only 16 and I’m over 200 pounds, I used to play sports, but now I don’t and I gained a lot of weight. I really wanna lose weight fast for prom, but with school being so hectic, I can’t find the time to exercise the way I used to when I played sports. I wanna do the 3 day diet, but I wanna know which tea to use. I bought some green tea, but its really nasty because i don”t have any sweetener.

    • I know, it takes a while to get used to the green tea taste. I would stick with green tea though, it has many health benefits. also, I just put a little honey in it. but if you drink it plain for a while, you start to get used to it.

  • So, im only 14 years old i way 213 pounds, im 5,2 and i need help. My doctor just told me that i am diabetic and i need to start dieting. i have no idea where to start. Im always reaaaallly active. I play Varsity Tennis, and Softball. I go to weight training every Morning for my 0 period and i jog/walk every night plus i do my ab and core workout everyday before bed. I have no idea what i am doing wrong or wheere to start. I NEED HELP!

  • i want to try the 3 day diet but i want to know
    1: is it ok if it isnt fresh juice?
    2: should i exercise?
    3: what age is this diet limited to?

  • I’m 16 and 5’2, I weigh about 155 and I have a dress I need to fit into for a wedding in about 3 weeks and I need to lose weight fast, someone help me choose the right diet please!

  • i eat 2 bananas for breakfast, 1 cup fresh lettuce without any cream or seasoning, boil broccoli with hard boiled egg for dinner. i eat daily and i shake off pounds easily within 3 days. just remember to drink plenty of plain water during the day and avoid fluid intake after 8pm. This diet work perfectly for me!

  • hi very interesting diet plans.

    please can you send me a diet for a flat belly diet it will be very much appreciated.

    many thanks

  • I am 14 and I am going on vacation in about a week and I am about 125 lbs. I’m not really looking to lose weight more so looking to have a tone stomach. I am active active but I haven’t lost anything in the stomach area and like I said before I need to be toned in about a week. Do you have any recommendations??

  • So I’m 16 and I’m 5’2.5 and I weight about close to 200pounds and I really need to loose weight and I’m active. Ivery tried so many different types of diets and almost none of them work. I don’t eat chips,chocolate or sweets. I really need your help I need to weight about 125 by the last 2 weeks of December latest. Please I’m really asking for your help to help me choose a good diet that is for sure to work…….

  • Hi, this comment is to Lola for is the 2 bananas the only thing you eat for breakfast and the lettuce is that just for lunch?

    Thank you,