Top 5 Diets To Lose Weight Fast

Everyone knows that sure and steady is the best way to lose weight, but what do you do if you need to lose 20 pounds fast? Maybe for that wedding next month or your high school reunion party?

Whether you just want a jump start on a long term diet or you simply need to drop 10 lbs in a hurry, one thing is certain; no one wants to lose weight slowly!

Rank Diet Rating  
The 2 Week Diet
Full Rating View
2 Atkins 40 Full Rating View
3 Ketogenic Diet Full Rating View
4 Intermittent Fasting Full Rating View
5 Meal Replacement Shakes Full Rating View

Quick Weight Loss

Sometimes, you just need to drop weight as quickly as possible. This is why we are going to take a look at the top 5 diets which are known for helping you to drop those pounds in a flash.

You will notice that this list contains quite a few low carb diets. This is because carbs are, for the most part, the major culprit for putting on weight, especially around the middle. Eating protein and fat will leave you feeling full and satisfied for hours, while carbs will leave you hungry again in hours.

Not to mention that our bodies treat simple carbs, such as pasta and white bread, the same as sugar, keeping you addicted to it and making you crave more sugar.

Kim Kardashian lost 80 pounds using a low carb diet, so if it worked for her, it can work for you!

Top 5 Diets Analysis


The 2 Week Diet

Ranked #1 - The 2 Week Diet
"For a diet to be successful, I truly believe that the diet must produce visible and significant results fast” – Brian Flatt, creator of The Two Week Diet

This diet plan is designed exactly for the kind of quick weight loss most people are looking for. The 2 Week Diet promises that you will lose 8 to 16 pounds of fat in just 14 days. Of course the diet can be started again for another two weeks for more weight loss.

This diet begins with a low carb plan, and then switches to a low calorie plan, as well as exercises designed for each of the 3 stages, which are supposed to work synergistically with one another

Short Term effectiveness

The author of this diet uses a science based approach so most people find that they do lose weight very quickly.

Most people go off their diets because they become bored or discouraged with results. A simple 2 week plan with weigh-ins helps to keep people motivated. Who wouldn’t be happy watching a pound drop off almost every single day!

Ease of use

Every step, including exercises for the week, is spelled out, so you can't make a mistake.


Since you don't buy any special foods, you will find that you can eat many of the same things you already eat and love.


Since this diet focuses on protein and fat, you should feel full and satisfied. Breaking free from a sugar addiction, however, might be difficult in the first few days.

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Atkins 40

Ranked #2 - The Atkins 40

Short Term effectiveness

This diet is infamous for allowing people to drop 10 pounds in their first week.

Ease of use

There is nothing special to buy, but counting carbs can become boring for some people.


Some people miss their pasta, but with choices such as bacon and eggs or T-bone steak fried in olive oil, you rarely hear complaints about the food selection.


What makes us feel full is protein and fat. This diet emphasizes both, which makes most people feel satisfied after meals.

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Ketogenic Diet

Ranked #3 - Ketogenic Diet

This is a low carb, moderate protein, high fat diet designed to keep your body in a state of ketosis, which means it is burning stored fat, rather than food. This plan causes weight to fall off so rapidly; you will be looking at yourself in the mirror far more than you will be looking at your scale.

Short Term effectiveness

Most people find that they lose a significant amount of weight with this plan, especially in the first few weeks.

Ease of use

Counting carbs can become tedious. Some people find it difficult to figure out carbs in a complete meal and give up counting.


Most people can find things that they love to eat on this diet, especially with things like fried chicken and bacon on the menu.


It's fat and protein that keeps us feeling full and this diet has plenty of both.

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Intermittent Fasting

Ranked #4 - Intermittent Fasting

For those of you who never want to deprive themselves of anything on their plate, this might be the perfect diet for you. There are several different ways of doing intermittent fasting. One plan calls for eating only within an 8 hour time frame (such as between noon and 8PM). Another plan, called the 5/2 Plan, has you eating normally 5 days per week, but eating only a bare minimum (600 calories or less) 2 days per week.

The basic idea here is that by not eating for slightly longer periods of time than just overnight, you automatically cause a calorie reduction (when you look at the weekly or monthly caloric intake) and/or you go into a state of ketosis, where the body is forced to burn fat for fuel.

This doesn’t mean you eat like an uncontrolled dog on the days or times you are allowed to eat; you eat meals as you normally would. This means that as long as you are controlling your portions, you can literally eat anything you want. This has led to some people calling this the “no diet diet”, because it doesn’t feel like dieting.

Short Term effectiveness

When followed properly, this plan is very effective in controlling calories and insulin levels, so weight falls off quickly.

Ease of use

It’s almost impossible to make a mistake, unless you want to claim that you forgot that you weren't supposed to be eating! Choose the plan that works best with your lifestyle (5/2 18/6, etc) and you can’t make a mistake.


OK, so on the days/times you don't eat, people can say you have "no taste", but otherwise, you eat as you normally would and since no real foods are forbidden, you will have plenty of good tasting choices when you do eat.


Once you become adapted to not eating, you will find that you aren't nearly as hungry as you were before you started this plan. You will be able to eat and feel satisfied, but perhaps not in the beginning.

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Meal Replacement Shakes

Ranked #4 - The 5:2 Diet

Consuming protein shakes or bars as replacements for meals is a very popular way to lose weight quickly. Most plans call for consuming a protein shake or bar in place of a meal, then eating a sensible dinner. Most of these plans limit calories to either 1,000 or 1,200 per day.

Short Term effectiveness

When calories are restricted, the body tends to shed pounds quickly, especially in the short term

Ease of use

Very easy to use; simply replace one or two meals a day with a shake or protein bar. No weighing, no measuring, and convenience make this plan popular with the on the go crowd.


A fairly wide variety of flavors to choose from means you won;t become bored too quickly, however, at this time, the texture and flavor of bars needs to be improved.


Shakes are filled with protein and fiber, which are designed to keep you feeling full.

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