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There are so many diets out there that it’s hard to know what works, what’s healthy, and what will work for you. Find out with our expert diet guide.

We’ve compared some of the most popular diets around so you can find out what they involve, whether they are safe, and how much weight you can lose – and choose the best one to suit you!

The Zone Diet

The Zone Diet is a low-carb diet and has been a favourite among celebrities including Sandra Bullock, Demi Moore, Sarah Jessica Parker and Jennifer Aniston.

The Zone Diet promises to help you lose 5 pounds in the first two weeks and then another pound for each week you’re on it. The theory behind the Zone Diet is that by eating the right nutrients to keep your hormones balanced, you’ll be able to eat fewer calories without experiencing hunger dips.


The Grapefruit Diet

The Grapefruit Diet is popular with celebrities like Brooke Shields and Kylie Minogue and promises to help you lose 10 pounds in just 12 days.

It’s basically a very low-calorie, low-carb diet accompanied by half a grapefruit or grapefruit juice with each meal. The theory is that grapefruits contain a special calorie-burning enzyme that speeds up the metabolism, resulting in rapid weight loss.


The Atkins Diet

Jennifer Aniston and Reneé Zellwegger are both fans of the low-carb Atkins Diet. The diet claims that when you eat too many carbohydrates, your body stores the excess carbs as fat.

So, by reducing your carb intake, you kick-start your weight loss by tricking your body into burning excess fat instead of carbs. The Atkins Diet promises to help you lose a massive 15 pounds in the first 2 weeks of dieting.


The Raw Food Diet

Followed by a host of celebrities, including Mel Gibson and Uma Thurman, those who follow the Raw Food Diet believe that when food is cooked (or processed), the nutritional value is lost. Those on the diet eat all food raw or cook just 30% of what they eat. Also, blending, juicing, soaking, and chopping are prohibited forms of ‘cooking’ in the Raw Food Diet.


The LighterLife Diet

The LighterLife Diet is based on eating 4 nutritionally complete meal replacements called LighterLife food packs each day – shakes, bars or soups each day. You’re not allowed to add any other food, not even vegetables. It’s extremely low in calories – the daily quantity of four LighterLife food packs provides an average of just 530 calories per day – which is why it claims to help you lose a stone a month.


South Beach Diet

The hugely popular South Beach Diet promises to help you lose between 8 and 13 pounds in the first two weeks, plus target stomach fat, followed by weight loss of 1-2 pounds a week. However, it does this by banning almost all carbs for the first two weeks of the diet. The diet is based on the GI—Glycaemic Index—diet.

The Blood Type Diet

Followers of the controversial Blood Type Diet say that sticking to a diet based on your blood type can help you lose weight.

The Blood Type Diet has received rave reviews from big-name celebrities like Liz Hurley, Courtney Cox-Arquette and Martine McCutcheon. But does it actually work?

Detox Diets

There is no one definitive detox diet, with several popular variations out there – ranging from living on just water or juice to allowing fruits, vegetables, grains, nuts and fish, and following time frames between two days and a month – but the theory behind them is the same.

A detox diet aims to temporarily change your eating habits to get rid of toxins in the body, banishing bad skin, cellulite and bloating. Most also promise rapid weight loss – usually a stone in the first 10 to 14 days.


Vegetarian Diets

A vegetarian diet is hugely effective for weight loss – vegetarians tend to be slimmer than meat-eaters, and they experience lower rates of heart disease, diabetes, high blood pressure, and other life-threatening conditions linked to being overweight or obese.

And all these benefits have nothing to do with stepping up the exercise or calorie-counting. In fact, by going vegetarian, you’ll lose approximately 1 pound per week, even without additional exercise or limits on portion sizes, calories, or carbohydrates.


The Diet Chef Diet

Like the LighterLife Diet, the Diet Chef diet provides all your food for the day in food packs – but it’s less dangerously low in calories (1200 calories a day), and you can add fruits and vegetables.

It’s also less expensive, at £190 for a month’s supply. In theory, all you need to do is microwave your meals and watch the weight melt away. But is it really that easy?