Slimming World

slimming-worldSlimming World is a long-established UK company which operates a very successful weight-loss program as a weekly class for members, based on its diet plan “Food Optimising”. (NOTE: All trade marks mentioned in this article are the property of the registered proprietor).

Food Optimising Diet



The Slimming World Food Optimising Diet promotes weight-loss through calorie restriction in the diet. Members are encouraged to be active, but exercise is not a formal part of the Slimming World plan. The diet is based on these principles:

  • Nutritious or filling foods having a low calorie content are termed “free foods” (that is, the quantity consumed is unrestricted).
  • Higher-calorie foods containing plenty of minerals, vitamins or fiber are termed “healthy extras”, and are recommended to be eaten in 4 small servings daily.
  • Other foods are measured against a daily allowance based on their “syn values” (coined by Slimming World and short for synergy SYN is actually a re-working of the registered trademark SIN). A total of between 5-15 syns per day is permitted, depending on your goals – 1 glass of wine comes in at 5 syns. Syn values for individual foods are calculated by a proprietary method based on calories, and the values for thousands of foods can be checked on the Slimmers World website by members of the program.

Red Days and Green Days

Each day of the weekly diet under the Food Optimising plan is termed an Original (or Red) day or a Green day. Foods may be classified differently depending on which day they are to be consumed.

  • Red day “free foods” include most fruits and vegetables, white fish, lean meats and eggs. Milk, cheese, bread, grains, beans, potatoes and dried fruits are restricted “healthy extras”.
  • Green day “free foods” include fruit and vegetables, grains, beans, pulses, pasta, rice, tofu, and eggs. “Healthy extras” include milk, cheese, bread, dried fruit, nuts and seeds, meat, and fish.

Participants choose either the Green or Original (Red) option for the day and stick to it all day. With either option, members can eat plenty of healthy, highly satisfying foods, while the intake of energy dense, fatty and sugary foods is controlled.

The recent addition of two further choices, Mix2Max and Success Express, gives more flexibility to the Food Optimising diet plan, and more options for slimmers.

  • Mix2Max gives flexibility by allowing a mix of Green and Original the same day, choosing at each meal time instead of each day, and still allowing snacking through the day from a long list of foods.
  • Success Express gives participants a super boost to their weight loss when needed, by allowing Green and Original Free Food on the same plate, without counting. One third of the plate is filled by free choice from Green or Original Free Food lists. The other two thirds is filled with so-called Superfree Foods (super healthy, super low in energy-density) such as vegetables and salad. There is still a long list of foods that can be snacked on throughout the day.

Sample Meal Plan

Breakfast
1oz muesli and fat free vanilla yoghurt.

Snack
Skinny latte and 1 banana.

Lunch
Canned mackerel in brine, shredded chicken breast, 1/2 tub 1% fat cottage cheese and large green salad.

Dinner
Mild cheese and broccoli, pasta made with 125ml skimmed milk, with 113g chicken breast, steamed green peas and carrots.
1 strawberry fat-free yoghurt.

Syns: 0

Healthy extras
227g baked apple with 1tbs mincemeat, and 7 high fiber crackerbreads.

Main meal

On a Green day – Spicy chicken and spinach with pasta and a green salad.

  • Stir fry in a wok, about 120g chicken, marinated in (fat-free) yoghurt and curry paste (2 syns) .
  • Add spinach until wilted.
  • Add steamed green beans.
  • Add cooked pasta and half a small pot of fat-free natural yoghurt.

Sample Alternatives:

On a Green day, for a tasty and very filling spaghetti bolognese use a measured serving of lean mince in tomato sauce with plenty of pasta.

On an Original day, for a very satisfying lunch have a jacket potato, mounded with low-fat chicken curry.

Find more healthy low Calorie recipes here.

183 Comments

  • HI TO ALL IN HERE. IM NEW SO PLEASE BARE WITH ME. IM LOOKING TO JOIN SLIMMING WORLD BUT HAVE NO ONE TO GO WITH . I MEAN WOULD LOVE THE PUSH ALONG TO THE MEETING AND THE TELLING OFFS WHEN IM NOT GOING TO THE MEETING AND EATING ACCORDINLEY. AM HOPING TO FIND FRIENDS ON HERE AND WOULD LOVE LOTS OF TIPS AND IDEAS. IM ASIAN IVE BEEN RAISED ON AN ASIAN INDIAN DIET AND ALSO EAT LOTS OF WESTERN MEXICON CHINESE WELL BASICALLY I EAT EVERYTHING. AM GOING TO TRY AND MAKE UP MY OWN LOW FAT INDIAN CURRIES AND WILL POST ON HERE WHEN I GET TIME AWAY FROM MY SCREAMING KIDS. WILL GO TO MEETING FOR THE FIRST TIME NEXT WEEK PLEASE PLEASE HELP ME DO THIS AS I ONLY HAVE ABOUT 2 STONE TO LOOSE BUT ITS DEPRESSING ME BAD.IM HOPING YOU ALL WILL BE MY NEW SLIMMING WORLD FAMILY. THANKS….. ALLIYAH

    by alliyah on 12/19/09
  • HI AGAIN. BY THE WAY MY EMAIL IS ALLIYAH_IMAAN@HOTMAIL.COM

    by alliyah on 12/19/09
  • i would some one to explian wot foods i can eat on red and green days plz help thanks

    by kerrie on 1/6/10
  • does your veg and friut have to be superfree on extra easy or can you just have free?also if having meat could you now have as many say peas and potatos as you wanted too? Thanks

    by sarah on 1/7/10
  • hiya all iv been doin boyh red green now im goin 2 do extera east we started at 6am 2day so faer my kida like it

    by kim on 1/7/10
  • Can someone please tell me if i can join SW if I only have one stone to lose? I have lost 10 kgs, need to lose another 12 kgs or so.. Too embarassed to join a meeting..

    by Farin on 1/8/10
  • Don’t be afraid to rejoin your Slimming World group, we ahve all fallen off the the wagon. Slimming World is a fantastic plan, I lost 3 stone 9 lbs 5 years ago and have never regained that weight, because I still follow the plans and i go to my group. There are 3 great groups in Epsom, Stoneleigh & Ewell in Surrey if you live in that area. Theres even a Saturday morning group, which is brilliant…. So go on the Slimming World website and find a friendly group near you…. you would be welcome as a new member or as a re-joiner….the extra easy plan is soooooo easy….

    by Sue on 1/27/10
  • I’m about to start the Slimming World diet which I bought off Ebay! Im a mum of 3 and my husband works shifts so not able to get to club each week. So Ive take the bull by the horns got my wii fit and my books at hand. Today im going to go through the book and mark off all the free food I like on green and red days and going to plan my meals for next week rather than giving up half way through. I’m finding it all rather confusing but I have to do it for my own health! Ive got 2 friends in work who said they would help with moral support so I can’t wait I would have 6 stone to lose but I would be happy with 1 stone to start. I need new clothes and I will not be buying this same size so looking at all the new season clothes coming into stores now and I am determined to buy them! I plan to start walking each night. Any tips from anyone who has been there please feel free!!! :-)

    by Caz on 1/31/10
  • Hi i want to lose weight but cannot get to my local group as my husband works shifts so cant get to every meeting. I want to do the slimming world diet of red day and green days can someone let me know where i can get a book from so i can do the diet at home.If anyone knows i would be really greatful if they could email me to let me know. @ lizziewyatt@blueyonder.co.uk Many thanks lizzie.

    by lizzie on 2/2/10
  • Having joined SW at the beginning of this week, I must say that I’m finding it all a little complicated, or, I am over complicating it!

    I eat healthily anyway, and find that the red and green days are what i would eat anyway, so I am trying to work out if the diet is there to guide people who dont eat healthily, and should I use it to help me curb my syns?

    I have about half stone to a stone to lose, I know its only been a few days and I should stick to it, but, I dont see what I am doing different than normal, I did start the on-line diary, which shocked me about my syns, so I’m thinking I keep up the healty eating and track my syns?

    I may have this all completly wrong!

    Any advice anyone?!

    by Sarah on 2/4/10
  • Hi Lizzy,
    I just came across your comment while Googling “how does slimming world work”. I’ve been doing SW for 15 weeks and have lost a stone and half. I’ve no idea how but it works (which was why I googling!). Something about not giving your body the job of digesting both carbs and protien at the same time makes you burn fat? Thats the only thing I can think that it is.

    Like you I ate healthly – no processed food, olive oil not butter when I cook, I don’t have a sweet tooth especially, lots of fresh fruit and veg. My diet on SW has barely changed, but the choices of what I have on any given day have altered (no meaty sauce on pasta dishes, stew with squash not potatoes, nothing I might not of done anyway) and somehow thats worked despite all my reservations.

    I can’t recommend SW enough, I hope you get as much out of it as I have.
    Now all I have to do is keep it off!

    by Chloe on 2/5/10
  • To find out if there’s a group near you, go to the website linked above. In the centre of the page you’ll find an area in which you type your postcode. It will then give you the 10 nearest groups with dates, times, adresses etc.

    Also if you go to the website you will find a 7 day menu plan.

    The online SW is called BodyOptimise.

    by Janet on 2/11/10
  • ok, how do i copy and paste this info to someone. I cant do it, and im getting frustrated

    by sheila on 2/12/10
  • i am thinking off joining the programme any tips.

    by sue on 2/15/10
  • I have a lot of weight to lose… having tried and failed so many diets including a 2 1/2 stone weight loss with weight watchers but I put it all back on within a year because I was so fed up of feeling hungry all the time… not the case with this diet!

    I decided to try slimming world and went for the first time in Jan 2010. I was petrified but knew I had to do something.
    I have lost 12 1/2 pounds in 4 weeks. As I say I have a long way to go which is probably why I’ve lost more to begin with….?
    But I am beginning to feel hopeful… the group is good fun and my leader is a hoot but he knows how it feels to need to lose more weight than most…he even rang me in my first week to encourage me.

    Initially I took it just one meal at a time to begin with as I struggled to get my head around it. I only follow the extra easy plan as it even fits in with my busy life.
    (5 kids and I work). I honestly believe if I can acheive success anyone can…. give it a try!!

    by Tracey F on 2/17/10
  • Hi all,
    just to let you know I joined sw abou 5 moths ago now, and have lost 2 stone, and dropped from a size 24 to a size 18 and feel wonderful, it might now sound all that great to some people but to the ones like myslfe we know thats a step in the right direction, I choose the extra easy plan because it fits in with my family, I never feel hungry and can eat all day long and still lose weight, and thats better than any shakes or pills if you ask me,is you go on slimming wrold on line there is a free week plan that you can try first, my friend joined 5 weeks ago and he has lost 2 stone the weight is faling off him and he looks wonderful. I cant tell you all how good I find this diet, well I dont think I can call it a diet I never feel hungry. good luck everyone, if I can help in anyway let me know.Mandy x

    by Mandy on 2/22/10
  • this is amazin G:D

    by CLARA on 2/26/10
  • Hi, I’ve recently joined slimming world as i want to loose weight to be healthier and to feel more confident & sexier!
    I have been doing it for a week but not sure if seen much improvement on the weight loss. The diet itself i love as i’m eating delicous healthy food and it doesnt fell like a diet but i want to know am i doing it right!!

    for eg.
    today i have eaten for breakfast cherry muller light (fat free yoghurt) & a big melon mixed witha satsumas.

    I have snacked on carrots, celery & 2 apples.

    For my lunch i had jacket potato & beans (no butter)

    For my tea was planning to have pasta with tuna as a healthy extra with a philadelphia sauce/milk which will use more healthy extra.
    so far today had no syns.
    Do you recocommend having syns? am i doing this right or eating to much.
    I’m so desperate to loose weight but last week saw no difference.

    Thanks Beth xx

    by bethany cooney on 3/1/10
  • Hi,
    I’m thinking of joining sw, can anyone give me the push that I need? I have already lost some weight on my own,but I now need a little help as I keep picking and feel hungry alot of the time.
    \thanks Lynn

    by Lynn on 3/1/10
  • I would like to do the diet but I live in holland and on-line is quiet duur any help?

    by Joanne on 3/3/10
  • Hey everybody, I joined Slimming world november 2009, and in 16 weeks I have lost 1 stone 13 pounds! I really dont believe this website gives SW justice, as I wouldnt even class it as a diet, its more of a lifestyle choice. Theres never any need to go hungry, as so many beautifull foods are unlimited. This website is a bit dated, as now there is an ‘extra easy’ day, whereby you can mix red and green meals, as long as a third of your plate is ‘superfree’ meaning veg, so typical meals include mix grills, beef/chicken roast dinners, bolagnases, pasta dishes, anything really! You can also eat out on the diet, as almost every restaurant serves a selection of meals which can be incorporated into the diet. I also go out at least once a week, and I just save up my ‘syns’ (similar to weight watchers points) and have lots and lots of vodka diet cokes, or soco diet lemonade and lime. It really is an amazing plan, Im within one stone of my 9lb target and have never ever felt so good, I recommmend to anyone – one of the few things out there that ISNT too good to be true!

    by Rebekah on 3/7/10
  • The difference between slimming world and a healthy balanced diet (which can be achieved freely if you put your mind to it) is nothing. the added advantages of slimming world is and reduced rate on a magazine (which tells you how to create a healthy balanced diet), weekly weigh-ins (where you sometimes feel bad if you dont lose) and meeting new people at image theropy.

    I am currently a memeber of slimming world but am thinking of leaving because for £4.95 a week i could buy extra fruit and veg to feel me up. I thought SW would help me lose weight through a special form of highly secretive dieting. To find all it involes is balancing things and eating in modration is somewhat dishearting for the amount that its costing me a mouth to go.

    by K on 3/9/10
  • The difference between SW and a healthy balanced diet (which you can do freely if you put you mind to it) is nothing. The added advantages of SW is a reduced rate on the magazine (which in on way or another tells you how to achieve a healthy balanced diet), weekly weigh-ins (where you sometimes feel bad if you dont lose), and image theropy where you can meet new people and have a bit of a laugh.

    I am currently a member of SW but i am thinking of leaving because the £4.95 i spend each week i could spend on buying more fruit and veg to feel me up. I joined SW thinking that it would involve some specially designed diet that was a closely guarded secret. To find that all it envolves is balancing fats, carbs ect and eating in moderation is somewhat disheartening for the amount of money i spend going to class and buying magazines ect.

    by K on 3/9/10
  • If anyone is thinking about joining sw all I have to say is this. Join now.

    I joined the end of Oct 2009 and have now lost 4 1/2 stone. I had tried other diets with hardly any success, I heard about sw and thought why not. Im pleased I did.

    If you’re thinking of joining stop thinking and do it. You wont regret it.

    by Chris on 3/18/10
  • i will help you out alliyah

    by kirran on 4/2/10
  • I am 14, and really want to join slimming world , but my mum wont join with me so what shall i do, please help :(

    by Hazeee on 4/18/10
  • Hi

    I have 6 stones to lose. I want to join SW but I have had a problem over recent years, I am agrophobic. Its very expensive to join online. Can anyone explain how it works, I get really confused, red days, green days, extra easy, food optimising, syns!! I am watching some books on ebay and hope to get them and start next week.

    I feel I need to be told the basic elements of how it works. Could you help.

    Many thanks Carla

    by Carla on 4/22/10
  • i went with a friend and never thought i could lose weight through actually eating and not starving myself – this really works and no it’s not some magic secret, it’s a bout changing your lifestyle and your out look on food. Muller light yogurts – the best and completely sin free.

    by Debbie Hockenhull on 4/26/10
  • Cannot rate Slimmimg World highly enough! My Mum and I joined at the beginning of Feb 10, Mum’s lost 1st 9lb and I’ve lost 1st 3lb (between us that’s the equivalent weight of my 3 year old and a bit more!!) We follow the extra easy plan, are never hungry as there is so much “free” food to eat, and are still able to eat choc etc using our syns! The class is great, we have a laugh, but understand if someone has a bad week as we’ve all been there. I hit my target when I’ve lost another 9lb, so will be able to attend the class for free (as long as I stay 3lb either way of the target.) The best £4.95 I spend a week!

    by nicola hunt on 4/30/10
  • Hi! I have just bought a slimming world starter pack 2010 off ebay, ive heard that its meant to be really good. However, i dont know much about this “extra easy” plan. I dont understand how this can work as well as going on a red or green day?? I thought the whole point was to seperate different food types on different days so tht your body burns off a certain type of food each day? If i am mixing carbs with meat each day will it still work as good? I have about 3 stones to lose, and i get really disheartened if things dont work as they say they will. I want to work with th extra easy plan as i love mixing food types, but if red and green days are more effective, i will change my plan. Could anyone please explain? or let me know if the extra easy plan is just as effective? x

    by Emma on 5/3/10
Date Created / Updated: August 10, 2010