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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 2 of 58, 1157 total comments)

Louise Esbach

Hi Everyone
I did the cambridge diet last year before my wedding and managed to lose 4 stone in 3 months :-) However, what with a few personal problems before the wedding, I stopped abruptly and never continued with it.... However, I am now back on it and am almost through the first week yay :-) I have 2 1/2 stone to lose but want to be able to spend more time coming off the diet on a gradual basis so that I can maintain the weight.... :-)

posted May 21st, 2012 12:07 pm


lovely programme.....once u start its awesome....lovely favourite is cappaccino..LF.

posted May 19th, 2012 9:22 am


Have been doing CD Step 2 since beginning of Feb and have lost 3 stone so far. Easy to do, still get to eat 'proper' food and never feel hungry. Best diet ever.

posted May 11th, 2012 3:59 pm

Linda Richardson

I just started CD last Saturday and have found the first week quite hard, felt awful for the first five days, have gone off tea and coffe, starting to feel a bit better, anyone else just starting?

posted May 3rd, 2012 6:05 pm

Brian Airey

What is the cost?

posted Mar 17th, 2012 5:12 am


How do I stay focused on the Cambridge Diet? Need help - how do I keep focused? I have started CD a week ago and finding it really hard to stick to ss especially in the evenings.

posted Feb 23rd, 2012 8:59 am


have been on the plan for 17days and i have lost an incredible 16lbs so far i am finding it easy to follow and i eat about every 3 hours with one sole source plus meal and i am feeling great

posted Feb 5th, 2012 7:33 pm


Works great!

posted Jan 30th, 2012 8:49 pm


Hello, I have been on the Cambridge diet for 2 weeks now and lost 4.5 kg in the first week and then went for my second weigh in on Monday and had only lost an extra 1.5kg, I had just come on my period and my consultant told me that it is normal to not loose as much when on your period.... Is this true? Has anyone else had this problem?

posted Nov 16th, 2011 2:11 pm


Hi everyone, I'll been reading this for the past few weeks and decided to start my SS. It's really tough on the first few days even till the 5th day today. I got 3st to lose, hope I can stick on it.

Any updates from the previous dieters, I would like to hear from those who did it. It seems none been updating so far.

posted Nov 6th, 2011 12:32 pm


Hi fellow dieters! I started step 2 on the Cambridge diet on Sunday 2/10/11 I have 3 milkshakes a day and one small meal. I have been struggling with the 3 a day and some days only managing two - is this bad? Also for dinner I have been having steamed veg and grilled turkey or a prawn salad today I'm having boiled egg salad. I don't yet know if I have hit ketosis yet as I am
Not feeling anything I was told I would, I don't have head aches or am I tired.
The only shake I seem to like and can drink without eveing is the mint choc one or sometimes the banana depending how smooth I can get it! Would really like someone to do this with some
Help and guideness. Xxxx

posted Oct 5th, 2011 6:00 am


Hi guys and girls. I have been inspired to try the cambridge diet and a work colleague ive not seen for a while lost 4 stone in 8 weeks. I found a councelor ans have a meeting on monday. She advised me to start dropping carbs from my meals and eat protein to prepare for starting as this helps with the headaches, its not as much of a shock to the system apparently. I'm looking to lose 3 stone, maybe 3 and a half. I will post back some results soon.

posted Sep 10th, 2011 3:09 pm


ive been on the cd diet in the past lost a stone kept it off thats been few month but got 4 to 5 to go so back on it just wasnt in the frame of mind deffo this time no stopping me been on it 5 days now bought ketosis strips thats me in it now only side affect i had was that found it hard to go to the toliet got something for it from the herbail shop all good now am doing the ss for few weeks anyway then once loss a good bit going to change to 8-10

posted Sep 9th, 2011 12:55 pm



posted Sep 4th, 2011 6:50 pm


Im on 4th date, started with 3 CD meals + 1 meal. Did a ketosis test today and the stick didnt change colour even though I followed precisely and exercised (walking on my treadmill). That pissed me off, called my counsellor & she said I didnt do the diet (have been eating cards!) that pissed me off even more! Anyway going for my first weigh in on Monday, I have a few health issues that directly affect my weight so lets see...

posted Sep 2nd, 2011 1:55 pm


Hi ppl. I have a question to ask...Can i eat an apple a day while being on the 3 pkts of CD.....

posted Aug 24th, 2011 10:07 pm


Hey day 2 on cb and feeling slightly weird this morning like im not here !! but loveling the soups and the boost of this forum is good gives u insentive when u here all the brilliant weight loss stories x

posted Aug 12th, 2011 4:39 am


I started the cambridge Diet on Saturday on step 2. I have found ok but have had a headache for a coule of days I do keep drinking as much as recommend, anybody want to pair up and share experiences would be great plus i am a vegetarian so any recipe ideas would be great :)

posted Aug 10th, 2011 11:23 am


I must say ss is the easiest diet i've ever done. It does have its hard moments but it's okay. I'm 20 years old and started 4 weeks ago weighing 16stone at 5ft2 now i've lost 19lbs & have gone down 2 dress sizes! I still have 5 stone to go but will hopefully lose it by my 21st in decemember. Also having a day off every 2 weeks & it helps having something too look forward to after working 60 hours a week.

posted Jul 6th, 2011 7:03 pm


Day 1 and im feeling hungry and got a headache :( still must plod on :)

posted Jul 1st, 2011 10:22 am


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