The 1:1 Diet By Cambridge Weight Plan – My First Month

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Last year I lost a couple of stones only to put it back on by the end of the year. I realised that my relationship with food was getting out of hand. A way was needed to rein back in how I was acting, as I had no discipline around what I was eating and drinking. I needed to gain back some control, and feel more in authority over my diet. So I decided to try something new, and turned to The 1:1 Diet By Cambridge Weight Plan.

The 1:1 Diet By Cambridge Weight Plan

The 1:1 diet by Cambridge Weight Plan. How it works, the advantages and disadvantages. The cost. The packs The weight loss expected. What can you eat. Can you drink? How hard is it? Does It work? VLCD and ketosis. Fat whoosh explained. Dieting and weight loss tips. #weightloss #cwp #cambridgediet #one2one #1:1diet #cambridgeweightplan #weightlossplateau #dietingtips #weightlosstips

Formally known as just the Cambridge Diet, the weight plan incorporates meal replacement packs to help you lose weight. I looked on the website at, which answers a lot of questions about how the plan works. By inputting my postcode I found a counsellor close to me, and made an appointment.

The most important part of the plan is that you meet once a week on a 1:1 basis with a weight loss counsellor. Who supports you, provides the products and can answer any questions. They also need to ask you some medical questions before you start. If you have medical issues you may not be able to do the plan. Though if you are concerned, it is always good to discuss it with your GP before starting a weight loss plan.

But what else do you need to know before starting the plan?

It is a VLCD

The 1:1 Diet By Cambridge Weight Plan is a very low calorie diet. Or at least Step 1 is. There are actually 6 different weight loss steps within the plan. Step 1 lets you have 3-4 Cambridge Diet products a day, so 600-800 calories. But some of the other steps let you have a balanced meal too. It does not have to be a massive change to your lifestyle. It can be whatever you want from it.

I am pretty all or nothing. As I said I really needed the break from food and temptation. My counsellor asked me why I really wanted to lose weight.

I started on step 1A (3 products a day), with the option of the occasional extra pack if I really need it. The packs contain the full RDAs of all the vitamins and minerals we require in a day. So in theory, you are getting everything you need.

Is It Expensive?

24 meal replacement products a week cost me about £60. Now, whilst this may seem expensive, you have to think about how much you would spend on food normally in a week. With alcohol, takeaways and extras I certainly think I normally have spent more than £60 on my weekly food. So I think this will be a saving.

You Need to Drink A Lot Of Water

This can be my let-down. The plan asks you to drink at least 2.25 litres of water a day. I bought a bottle which holds 600ml, but find it difficult. But the more you drink over the day, the better. (Note however, your body cannot take to much water in one sitting, do not drink 2 litres all in one go!)

The 1:1 diet by Cambridge Weight Plan. How it works, the advantages and disadvantages. The cost. The packs The weight loss expected. What can you eat. Can you drink? How hard is it? Does It work? VLCD and ketosis. Fat whoosh explained. Dieting and weight loss tips. #weightloss #cwp #cambridgediet #one2one #1:1diet #cambridgeweightplan #weightlossplateau #dietingtips #weightlosstips

You Cannot Cheat

On step 1, you cannot eat any food, or have milk in tea or coffee. Diet drinks are off the menu. And no alcohol.  Like any diet, if you cheat, you don’t lose.

Although the Cambridge Weight Plan are trying to move away from the whole ketosis diet image, step 1 still does get you into a ketosis state. Ketosis occurs when we go on a low/no sugar diet. The body uses up all it’s glucose and glycogen stores (sugar stored in the liver) and then the body goes on to burn fat, which produces ketones.

Of course, on a 600 calorie a day diet you are bound to lose weight anyway, but the biggest advantage of going into ketosis for me is that you just lose your appetite completely. You just do not feel hungry. Whereas, if you do cheat, this stasis is broken and you feel hungry. Ketosis also gives you a little bit of a mood lift.

What Are The Meal Replacements Like?

I must say, there is such a lot of variety. There are bars, shakes, desserts, soups and meal-type dishes. And there are even some ready made shakes with a straw for when you are on the go.

I like to start the day with one of the 3 different porridge flavours (apple and cinnamon, pecan and maple, or original) and that sets me up. I may have a bar if I am out for the day, they really do taste like a proper chocolate bar. And the spaghetti bolognaise meal is one of my favourite meals, as it really tastes good.

How Hard Is The First Week?

Some people get really moody or lethargic at the low calories. Some people get headaches. But it does pass, usually by day 4 or 5.

I am not going to say that it was dead easy, but for me the motivation outweighed the worst of the side effects of following such a strict diet. And you just have to think about how much weight you are going to lose quickly.

In the first week I lost 8 pounds!

The 1:1 diet by Cambridge Weight Plan. How it works, the advantages and disadvantages. The cost. The packs The weight loss expected. What can you eat. Can you drink? How hard is it? Does It work? VLCD and ketosis. Fat whoosh explained. Dieting and weight loss tips. #weightloss #cwp #cambridgediet #one2one #1:1diet #cambridgeweightplan #weightlossplateau #dietingtips #weightlosstips

And Going Onwards?

That first week fully motivated me to go onwards with the plan.

In the second week I lost a further 4 pounds, in the third week I lost 3 pounds. But in the fourth I only lost a pound.

And this is sometimes when people get a little disheartened and give up. A plateau when losing weight can be a big obstacle to carrying on to a lot of dieters. But it can also be the body retaining water in what is know as “The Whoosh Effect”. This happens to most people, and most people get a bad weight loss in week 3 or 4 on the plan. Why?

The 1:1 diet by Cambridge Weight Plan. Fat Loss and The WHOOSH effect. Why a weight loss plateau should not get you down. Pictorial explanation of how fat loss works and how you retain water when losing weight. #weightloss #cwp #cambridgediet #one2one #1:1diet #cambridgeweightplan #weightlossplateau #dietingtips #weightlosstips

You might feel like you are doing everything right but not losing.

As you start to lose fat, your fat cells start to retain and fill up with water. They want more fat to come in, so they are retaining this water as a place holder. They can hold onto this water for days, before realising that there is no fat coming, then….’WHOOSH’. They release the the extra water and the fat cell collapses. You finally get the weight loss that you have worked for.

So – don’t give up. It may just be ‘whoosh week’! I have still lost 16lbs in 4 weeks which is great.

What are the Biggest Benefits of The Plan To Me?

Having that 1:1 time with a counsellor is a great thing. And my weight consultant sends me motivational messages and gets in touch regularly to check in that I am doing ok. Having done the plan herself, she knows how it feels and can understand how hard it can be to stay motivated.

The plan if you follow it is proven to work in a short time. And recent studies have shown that it doesn’t matter whether you lose weight quickly or slowly. The old adage of “you have to lose weight slowly to keep it off” is just not true. So I am all for losing my pounds fast.

I have more time. Because I am not constantly thinking about what I am eating next, or rummaging through the cupboards looking for snacks (i’m definitely a little picker) I just seem to have more time on my hands. Which means that I am getting jobs done tidying and clearing out a lot quicker than I was. My eBay sales have improved thanks to this too.

motivational and funny weight loss quotes

See some more Motivational Weight Loss quotes here

But at the end of the day, the biggest advantage is that I have already quickly found that I am losing inches and feeling better. Yes, I still have a long way to go, but losing 16 pounds in the first month with The 1:1 Diet By Cambridge Weight Plan has set  me on the right path for getting to my goals!

Why not Follow My Progress?

If you follow me on my Instagram Account, you will see that I am documenting my loss more closely. Plus I am sharing my gorgeous wardrobe of clothes that I cannot wait to get back to wearing. Have you got outfits that you want to get back into? Follow me and share with the hashtag #motivationaloutfit

I cannot wait to see your snaps!

Fallen off the diet somewhat? Read my tips for Getting Back On Plan.

Or read my tips on sticking to a diet in tough times.

Why not pin this post for later?

The 1:1 diet by Cambridge Weight Plan. How it works, the advantages and disadvantages. The cost. The packs The weight loss expected. What can you eat. Can you drink? How hard is it? Does It work? VLCD and ketosis. Fat whoosh explained. Dieting and weight loss tips. #weightloss #cwp #cambridgediet #one2one #1:1diet #cambridgeweightplan #weightlossplateau #dietingtips #weightlosstips

Twin Mummy and Daddy

12 Replies to “The 1:1 Diet By Cambridge Weight Plan – My First Month”

  1. Mary Burke says:

    A lady who lives over the road from me has completely changed in appearance I haven’t seen her but my partner has and he went over the road and got the information from a sticker on her car. I am currently on a low dose of steroids and suffering from Polymyalgia so can you tell me if this way of eating would be ok for me. I want to lose weight because my weight stops me from doing things and all I do is work sleep and drink. Can you let me know if the Cambridge diet would be suitable for me and how much it will cost please

    1. Jo Boyne says:

      I would go to the 1;1 website and find a counsellor near you. Then contact them to discuss your medical conditions and history. I am not trained to advise whether you should do the diet, but a counsellor could help. Or discuss it with your GP.

    2. Twiglet58 says:

      Hi. Your post was a really interesting read and I wondered if you were still on the CD. I have had 4 weighs and lost 12&1/2 pounds and 5 inches off my waist, but seemed to have stalled as last week I only lost 1/4lb they say it’s the whoosh effect?? How did you deal with it?
      Twiglet58 recently posted…How To Choose A New Sewing MachineMy Profile

      1. Jo Boyne says:

        I am still on the CD, though I have struggled over the summer for various reasons. Do keep going, it is normal to stall at times, but don’t give up and you will really see the changes. I have lost 31 lbs to date.

        1. Twiglet58 says:

          Hi ty for replying. I weighed this week and lost 2.5 so really pleased and hopefully back on track. Keep going, 31lbs is amazing. Always here to chat!❤️

          1. Jo Boyne says:

            That is brilliant news! Keep on going!

  2. Crummy Mummy says:

    That’s amazing weight loss in one month! You should give yourself a huge pat on the back! Looking forward to charting your progress! #MMBC

  3. Mrs Mummy Harris says:

    Congrats on your weight loss! I’m struggling to maintain the healthy eating – its so hard with treats in the house for the kids! I’m trying something from Diet Bon this week so we’ll see!
    Thank you for sharing this with us at the final chapter of #TriumphantTales. Thank you for your support!

    1. Jo Boyne says:

      Thank you! It is hard when you buy things in. I guess that I just am really motivated right now for lots of reasons.

  4. Ali Duke says:

    I am trying to lose weight at the moment. In the last 6 months whilst I have been off work with depression I have put on 2 and 1/2 stone. This is the biggest I have ever been and I hate it. I did the first week and a bit of WW but couldn’t really afford it, so I am going it alone. This sounds like a great plan, when I get back to earning my full wage I might think about joining it.

    1. Jo Boyne says:

      It is so hard to find that motivation sometimes. I have lots of reasons which I am trying to keep at the fore of my mind daily to keep me motivated.


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