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Cambridge Diet

A liquid diet that may be too calorie restrictive for long-term success.

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With new diets hitting the market faster than we can lose a pound, it is not too often that you stumble upon a diet that has been around for more than 20 years. The Cambridge Diet has proudly clocked some years under its svelte belt. Developed in the 80s, it still enjoys a very loyal and passionate audience of dieters who have been successful at losing weight and keeping it off.

It is a liquid diet program that involves drinking 3 servings of the signature Cambridge Diet formula each day with or without food. The three servings provide you with protein (either 30 or 50 grams), carbohydrates, fat, fiber and your daily-required vitamin and mineral allowances.

About ten years ago, the Cambridge Diet added an additional product to their 330 Original Product. The 420 Food for Life product contains 100% of the required daily protein needs in 3 servings whereas the 330 Product contains 75% of the required protein. The protein source comes from whey and soy. Both of them are nutritional supplements that do not contain drugs, medicine, stimulants or herbs.

There are four ways for you to follow the Cambridge Diet: - The Fast Track: Consume 3-4 servings of Cambridge a day and no additional food. - The Alternate Program: Use 3-4 servings of Cambridge for one day with no food and then the following day, consume 3 servings of Cambridge with the addition of 400-800 calories of low fat, low calorie health food. Continue to alternate in this manner. - The Regular Program: Eat 3 servings of Cambridge 15- 20 minutes prior to each low calorie meal. Calories should not exceed 400-800 for the entire day. - The Regular Program 2: Consume 3 servings of Cambridge and eat one meal of low calorie food each day. Calories should not exceed 400- 800 calories for the entire day.

  • Cambridge Diet contains all the essential nutrients
  • Has a proven success rate
  • Safe for diabetics and those with high blood pressure
  • Its limited consumption of food may incite excessive eating
  • May be too calorically-restrictive for some individuals
  • Does not teach you to eat in a healthy and long-term way
  • Long-term weight loss may not be sustained
  • Calories might be too restrictive for exercise

The foundation of the Cambridge Diet is its signature line of shakes. They come in an array of flavors like chocolate, vanilla, eggnog, strawberry, cappuccino, banana cream and many more. The shakes come in two styles: The Original and the Food for Life.

The Food for Life product contains 51 grams of protein, 54 grams of carbohydrates, 3 grams of fat and 140 calories per shake. It also includes 100% of the Recommended Daily Allowance (RDA) of vitamins and minerals. The Original contains 31 grams of protein and contains about 110 calories per shake.

There is also a line of additional Cambridge products like soups, nutrition bars, and super oats.

When taken the prescribed three times a day, you'll only consume 420 calories. If you select to follow a plan that allows for food, you should not consume anymore than an additional 800 calories a day and these calories should come from low-calorie and low-fat foods like vegetables and lean proteins. If you are on the smaller side, it is recommended that you only consume an additional 400 calories on top of the 420 calories for the Cambridge products.

You are also strongly encouraged to drink at least 3-4 liters of water each day.


Since the Cambridge Diet is so restrictive, exercise should be done cautiously. It is not recommended to start a new strenuous exercise program while on the Cambridge Diet. Moderate exercise like walking or biking is useful once you start to lose weight, providing that it is approached with caution and not done with excess.


There is no question that The Cambridge Diet has been around for a long time. And in the process, many have had luck losing weight by following its strict dietary regimen. Since the diet is so low in calories, check with your doctor before starting it, especially if you have an existing medical condition.

The Cambridge Diet devotees swear by the diet's ability to help them lose weight as long as the program is followed correctly. But like most diets that rely on shakes or supplements to shed pounds, its potential for long-term weight loss and for instilling sound and healthy eating habits in you is not that promising.

Common Misspellings

cambrdge Diet, cambradge diet, cambridge deit, camebridge diet, cambridge liquid diet,

Related Diets: Cabbage Soup Diet, Juice Diet, Liquid Diet, Master Cleanse Diet, New Lifestyle Diet, Slim-Fast, Isopure Shakes, 21 Pounds in 21 Days

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(Page 9 of 59, 1161 total comments)


I am starting on the 1000 calorie on Saturday for 1 week, then the 800 for 1 week then SS hopefully to lose at least 2 stone. My son, who has a lot more to lose will be doing it with me. I am a little anxious as I have no friends who are willing to support me on this diet (my first one ever by the way). They have all said that I will lose weight, but as soon as I come off the diet and start eating again, the weight will go straight back on and some. Also I am being repeatedly told that this is not a healthy diet. Obviously reading Nicolas comments is very worrying. Any advice or suggestions would be greatly appreciated.

posted Jun 30th, 2009 4:47 pm


hey to everyone! came across this diet whilst browsing! hope you dont mind me contributing..
last year summer of 2008 I reached my goal weight and lost 4 stone, I was thrilled! I went on the maintenance and compleated it sucsessfully.
A year on.... I put on all my weight plus another stone, I have bowel abnormalities, stiffness of the joints and suffered with cysts.
I cant pin point a particular reason for this other than the CD.
Me now.....I go to the gym 3 days a week and horse ride 4 times, eat what i like but in quantity and even had some ice cream for tea tonight... and ive lost a stone in 6 weeks, I KNOW ITS NOT A QUICK AS THE CD, but I am gradually on the mend with the problems caused from lack of calorie intake, although the protein is sufficient in the CD I generally dont think I would be suffering now If I hadnt gone on the CD.
Good luck to everyone whos on it....please please all be very careful.

hope i havnt bored you all
take care love nicola xxx

posted Jun 19th, 2009 6:24 pm

Jackie Kerr

Hi everyone I started today - its 4.30 pm i made up the chilli soup for my lunch had to throw it away yuck! my friend said I should of made it thinner - I then made up a vanilla shake much better when can I use the gelatine for the shakes sounds great I have a stone to lose .....feel very tierd now its tough but reading the reviews its worth it x

posted Jun 18th, 2009 11:34 am


I've been on the CD- SS and have lost 1 stone in 9 days. Enough said!!

posted Jun 16th, 2009 6:12 am


I have lost 3 stone in 13 weeks on this diet so far-I could never have done this on any other diet. I've also lost just over 30 inches so far too.

I don't find that I'm hungry at all. Apart from the first few days before I went into ketosis. The cravings were hard to deal with at the beginning but now it doesn't really bother me. I'm almost halfway there now-I hope to be at my goal by September/October. I'm so glad I did this diet-it's changed my life.

posted Jun 16th, 2009 5:36 am


hi everybody, im starting this again today but i do the ss+ with the small meal, i lost 2st last time very quickly 10lb my first wk & 7lb second which was amazing & a great feeling, i have my holidays coming up so here i go again with 2 1/2 stone to lose im not sitting on the beach next to my teenage daughter & me looking a little chunky lol. good luck everyone everybody :)

posted Jun 8th, 2009 6:09 am


I started ss today and have so far had 1 shake. Not the tastiest thing in the world and i'm already hungry. I have found that mixing it with hot water makes it nicer to drink. Tommorow morning ill have the porridge as i think it will kickstart the day better. I currently need to lose 3.5 stone so wish me luck

posted Jun 5th, 2009 6:36 am


im starting ss tomorrow for the second time. i tried it last year and only lasted 2 weeks, but did lose 13 pounds in that space of time.. i am now a stone heavier than i was when i started the first time.. i need to lose 4 stone to be ideal weight and finally fit my skinny jeans again. wish me luck, il post again after my first weigh in. xxxx

posted May 26th, 2009 4:46 pm

Laura Manning

Hi, I am thinking of starting the Cambridge diet. I am concerned that my will power won't be strong enough or that the results won't be as good as those I've heard so I and was hoping for some feedback and advice, both the positives and negatives.

posted May 25th, 2009 5:16 pm


Starting SS today so excited can't wait to start losing, feel like I have taken charge of my life, I am determined to stick with it. I found everyones comments very motivating, will let you know how my weight loss progresses.

posted May 24th, 2009 5:58 am


Hi Zhenya ,

How much you lost in one week?

posted May 20th, 2009 9:13 am


Hi All,

I am on day two now, so far so good! I have been slimming world since Jan 09 and struggled to lose a stone so I thought I would give this a try.


posted May 20th, 2009 8:10 am


Hi Everyone,

I'm on my fourth day. I am truely blessed as i've not had any headaches, or much hunger. I cut out sugar about 8 weeks before starting and tried to eat more healthily.

I have gone from drinking virtuely no water to having over 3 litres on the first 2 days, about 2.5 on the 3rd day and about 1 litre so far today (but will definitely have the full 3 litres recommended).

I am going to the toilet ever 15 mins after drinking. I think i've been 4 times today already! I feel like I am constantly on the loo. LOL.

But, despite following the SS Plan religiously, in the last 3.5 days I have not lost a thing.

Any advice, or suggestions would be greatly appreciated.


posted May 14th, 2009 11:06 am


I started this diet today and I have to say I am really struggling. I'm soooo hungry. My counsellor has set me a deadline of around 6 months to lose 7 stone. It sounds amazing if its possible, but I am really craving food and am worried I can't make the day without caving :-(

posted May 12th, 2009 12:11 pm


I have a question for those on Sole Source: I have been doing 4 weeks of Sole Source and then eating an additional 400 calories a day for week 5, and then repeating the cycle over again. I started on 12/29/08 and I have since lost 82 pounds. The problem now is that I have hit a plateau, and I have not lost in 2 weeks even though I have changed nothing. Does anyone have any advice?

posted May 10th, 2009 5:23 pm

cheeky chops

Hi everyone, just had my 12th week weigh in and so far over 12 weeks have lost 57lbs. YEY!! Going on to sole source plus for a month, then working up the plans, as about 28 - 35lbs left to go.
This is the best diet I have ever done.
Keep going everyone

posted May 1st, 2009 3:39 am

Alice Conolly

I swear by this diet if you follow it strictly. I lost 3 stone in 4 months last year. Unfortuntately I came off it around my birthday and completely fell off the bandwagon. But am back on it as of last Thursday. I have one treat night where I have a meal out (on weigh in day) and this doesn't affect the diet at all. I also find that I can't eat as much as I used to so it actaully does change your whole approach to food. Good luck to everyone on the diet...!

posted Apr 28th, 2009 8:26 am


I tried CD last year for about 2 months and lost 9kg. Had stopped for about a year and sad to say I've gained back all the kgs.

Try to exercise and choose a healthy diet after the programme.

You guys who are taking CD, pls remember to drink plenty of water to prevent the liver and kidney from being congested.

posted Apr 26th, 2009 11:19 am

katie kitty

Hi all, i did CD last year for 2 weeks and lost half a stone but stopped becuase my willpower was not good lol! now i am happy and feel like gibvin it another go! i have a consultation next week! and very excited! only 4 stone to lose!

posted Apr 24th, 2009 6:02 am


Starting cd 2moro i am quite excited im sure i wont be in 3 days...... will keep you informed x

posted Apr 23rd, 2009 5:32 pm


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