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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 8 of 59, 1161 total comments)


Hi Tina,

I am a Cambridge Counsellor and Sole Source is designed to be strictly followed 100% for teh best results. Chocolate is full of calories, sugar (and therefore carbohydrate!). It will likely prevent you going into ketosis, or if you do you will take yourself out each time you have chocolate. Your counsellor should have explained the importance of following the diet strictly - I'd recommend you contact them to discuss this.

posted Dec 13th, 2009 8:45 am


Hey Everyone...I am new to this diet and on day 4 of SS....Have had a piece of chocolate everyday from the time the diet started.Will that effect my weight loss...Please advise...I really need to know...Thanks

posted Dec 8th, 2009 5:03 am


Hi Everyone, I'm on five day with the CD and already lost 2 kilos, very happy. Looking fw to lose 13 kilos more. It's lil hard in the beginning, but after the 4th day it will go easier. Good Luck!

posted Dec 6th, 2009 9:58 am


Hi evryone. I am on day 27 of the CD and it is the best diet that I have done. I have lost 23lbs so far and at my weigh in on Monday I intend to hit the two stone mark. Side effects, I have not experienced any I am still the beautiful person I was when I started just smaller. If you have the determination to be strict with yourself and believe that you can be smaller and healthier then this is the diet for you. As for maintenance, I am looking forward to the challenge. I have waited too long for this and do not intend to stop now. By the way I know someone who has followed the lighter life plan (similar diet) and has kept the weight off for a number of years now. I'll be looking a lot hotter in summer and will be able to do a lot of things that I am not able to do now. Good luck to all those who start the journey. x

posted Nov 28th, 2009 12:24 pm


I started cambridge diet sept 2008 lost 6 stone3lb in 3 1/2 months came off it in jan 2009 which was great and i was happyish at the weight, but it was due to the effects on me i came of it, my personality totally changed for the worse, i became depressed, aggressive and plain unbearable to live with, also my hair fell out in handfuls i used to have fine but very thick hair and lots of it, even now it is fine and thin, you also get constipated. the main problem is since i came off it i have eaten nothing but a sandwich at lunch and salad with low fat meat or fish in the evening ( even sunday lunch ) and fruit / yoghurt for a snack and did a lot more exercise than before. i have put back on nearly half the weight i lost making me more unhappy than i was before i even went on the diet. after talking to a dietician and doctor the problems with these diets is that your metabolic rate drops exceedingly low when you are on 500 cals so when you start eating food you metabolic rate stays low, making you put on weight you will also put on about a stone and a half in fluid, as fluid builds back up around your organs to its normal level. I talked to my counsellor she basically blamed me for everything and implied that the diet was the best thing since sliced bread.
After xmas i am starting diet chef it is still low calorie 1200 cals but it is actual food and there are loads of choices so it shouldn't mess with my head .
I wish you all the best luck and hope you don't go through what i did. i read lots of negative reviews and chose to ignore them. i am telling you as it is.

posted Nov 25th, 2009 4:01 pm


Im new to this website and came across all these comments posted! I think Im goin to find this website really helpful on my journey :-) Ive Been on the CD Diet Since Monday and i know a souldnt weigh myself but ive lost 8lbs already and im gettin weighed properly by my counseller on sunday... I Cant wait for the result! Ill be updated my profile on sunday with hopefully more lost lbs!

Good Luck to everybody!!!

P.s SS is really hard at first but its defo
worth it!

Speak soon

Take Care Love Linz xx

posted Nov 13th, 2009 9:57 am


after reading comments i am inspired to try it thanks x

posted Nov 4th, 2009 12:46 pm


hi everyone! this place is great, haven't see so many people losing weight anywhere else. so far I believe in this diet:))) for me it's something. 'cause i'm always in war with my f... negative and sceptical mind.
'cause haven't started the CD just yet. my first meeting with my counsellor is on Monday. looking forward. in my ideal world I want to lose 5 stones. will see how it goes. my biggest problem after my negative mind is willpower, there are days when I just can't be bothered. gosh, I hate it so much, ha ha. but I'll try to be strong. OK, good luck to everyone. God (or devil, doesn't matter to me, he he) help us to be strong and motivated.

posted Oct 22nd, 2009 6:39 pm

Saima Haq

just started SS today. Wasn't too bad. Was wondering if i could do two shakes with high protein/ Atkins meal. Anyone try that. would love to know since this diet works on the same concept of ketosisi

posted Oct 19th, 2009 12:50 pm

Lawyer 2B slim again

I'm the new girl.('',). Hope everyone is having agood day. Is anyone still doing the CD?

posted Oct 13th, 2009 11:21 am


It works! I've lost 10 kg in 1.5 month and didn't put on . Just watch your portion.

posted Oct 7th, 2009 1:57 am


How much does this diet cost approximatley for a month? im thinking of starting this week, why does everyone ahve so mcuh trouble with the ianatenance, is it because weight loss is too fast?

posted Oct 2nd, 2009 7:43 am


I wonder can you have aspirine with this diet?

posted Sep 28th, 2009 1:40 pm


This diet is s**t......Yes you have fast weight loss, but they don't tell you about the side effects, like regaining weight fast even if you have done loss which I did suffer and now I have kidney problems, doctor has said it was probably due to high water intake and stressing my kidneys out :( this diet caters for people who are at there wits end and want that miracle..but nothing is better than healthy eating and exercise.


posted Sep 1st, 2009 10:58 am


hi everyone ive now been on the diet for 8 weeks and 6 days, i have lost a total of 3 stone and due to go and get weighed again tomorrow. i have tried so many other diets with little results but this diet beats them all and im loving it x

posted Aug 28th, 2009 5:44 am

Elin HOpkins

HI just started SS today- not enjoying it at the moment! BUT am very encouraged by all your stories! Going to try and stick to SS for a week, bit might have a chicken Salad on the weekend for a treat. I want to loose about 2 stone! I'll let u know how I go! x

posted Aug 26th, 2009 2:18 pm


im on day 4 of ss plus food and have just been to see my councellor to change my shakes and have already lost 3 1b which is fab. I WONT LIE THE FIRST FEW DAYS ARE TORTURE and having to take my daughter and her friend out for burger and fries was sooo bad but i have done it and feel really pleased with myself. keep going all of you.

posted Aug 7th, 2009 9:21 am


Hi I am currently 13.5 stone, I am starting the diet tomorow and want to drop 3.5 stone - how long do you think this will take?
Thanks x

posted Aug 2nd, 2009 2:36 pm


hi everyone, thought id let you all know how im doing. well i started the cambridge diet 14 weeks ago have lost 48lb so far (3st 6lb) only 8 lb left til i reach my goal and cant believe how quick and easy it has been. it does get easier after the 1st few days for def and before long its just your way of life and i find i dont think about it anymore. dont get me wrong ive had about 2 weeks off the diet in this time when ive been on holiday/birthday but somehow managed to stay the same when i weighed?!. the last few weeks, although mainly sticking to ss have had chicken salads in the night. i drink loads of coke zero, and water and diet coke now and again, and even had the odd treat after ive weighed on a thursday! i just hope when i reach my goal ill be able to maintain my weight- but its been the best thing ive ever done.

posted Jul 20th, 2009 2:27 pm


Hi all, just started on ss yesterday, and desperate to lose 3 stone asap, been fat for 7 years and now practically live as a hermit! My partner lost 5 st on ss 2 years ago but i just never had the willpower to stick with it for more than 1 day! Can someone tell me if its true that after the 3rd day it gets easier? And whats the truth about diet/zero coke? Also I have heard that there are other things you can do with the soups ie muffins etc, anyone have any recipes??
Good luck all xxxx

posted Jul 9th, 2009 9:09 am


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