Dukan Diet Attack Phase Length:How Many Days Should It Last?

So you want to know how many days to follow Phase 1 of the Dukan Diet for, well you know the saying you can’t have too much of a good thing,  when it comes to the Attack Phase of the Dukan Diet this saying doesn’t apply, you can have too much of a good thing.

The Attack Phase is definitely a good thing and it is one of the features of the diet which helps attracts dieters to the Dukan Diet.  It seems like a magic bullet that promises to provide a large weight loss in a short period of time.  The first phase of the Dukan Diet does provide faster weight loss results than the other phases of the diet but too many people are increasing the length of the Attack Phase and expecting it to deliver the same rate of weight loss over a longer period and are then disappointed and disheartened when this doesn’t happen or they are unable to complete this phase.

The average length of the Attack Phase is 5 days and this is length which Dr Dukan considers produces the “best results without encountering resistance from the body’s metabolism before the dieter becomes weary of it.”

The resistance Dr Dukan refers to is a natural, in-built defense mechanism that our bodies have to cope with shortages of food.  After a few days of eating less food the body starts to get concerned that a famine has started and it decides that it needs to do something to help ensure its survival until food is more plentiful again.  It does this by turning down the metabolism which reduces the rate at which calories are burned.  This of course is the exact opposite of what any dieter wants to happen.

Although there are 72 high proteins foods to chose from, eating pure protein for more than a few days at a time does become very boring and monotonous and boredom with food is one of the dieter’s worst enemies.  It has been the reason for the failure of many diets.

The problem with a new diet is that it is usually started start with great enthusiasm and the intention of following this new diet exactly as it should be.  Very often unrealistic targets are set and one of these unrealistic targets is to follow the Attack Phase of the Dukan Diet for what should be the absolute maximum of 10 days (or sometimes even longer) without medical advice and then when the dieter finds themselves unable to reach this target they often fall off the diet.

How long should I follow the Dukan Diet for

How Much Weight Needs to be Lost Number of Days for the Attack Phase
Up to 10 pounds1
More than 10 pounds but less than 20 pounds3
More than 20 pounds but less than 40 pounds5
More than 40 pounds5 (but can be extended up to 10 days on medical advice)


Here are some other post about the Attack Phasethat you might like to read

The Attack Phase of the Dukan Diet Explained

Dukan Diet Attack Phase : 72 Protein Foods You Can Eat

Can I Use Oil or Fat Whilst on the Dukan Diet?

Can I Have Milk in the Dukan Diet Attack Phase?

How to Eat Oat Bran on the Dukan Diet?

How Much Oat Bran Do You Eat on the Dukan Diet?

Can I Eat Tofu in the Attack Phase of the Dukan Diet?

Can I Use Shirataki Noodles on the Dukan Diet?

Can I Drink Tea, Green Tea or Fruit Tea on Dukan Diet?

What Else Can You Eat and Drink on the Attack Phase?

How Many Eggs Can You Eat on the Dukan Diet?


5 Responses to “Dukan Diet Attack Phase Length:How Many Days Should It Last?”

  • Caron McNally on May 28, 2017

    I have been on the attack phase for nearly a week. I have over 30 lb to lose. I am vegetarian so have been eating fish cottage cheese 0% yoghurt eggs, mostly egg whites, flavoured water. I am suffering with the menopause and at my whits end with gaining weight, so when I read about this diet I felt so positive, much more than in a long long time.. I have been drinking lots of water to help with water retention.
    But I have put on 3lb!! I am so deflated. I’m beginning to think that this is me now and nothing can help me lose weight 🙁
    Has anybody else experienced the same?

    • Amber on June 3, 2017

      Hi Caron

      The water retention and fluctuating hormones you are currently suffering with is going to make it very difficult to see progress.

      Which flavoured water are you using and how much of this are you drinking? Are you using any oils/fats in cooking?



  • Sandra on March 22, 2015

    Hi Amber! I posted this question on another section, but was thinking it didn’t go through. I wanted your opinion on the attack phase that I am doing now. I am ending the 5th day and am very disappointed to have lost around 300 grams. Not sure what exactly I’m doing wrong. I am only eating grilled chicken breast, salmon or shrimp, fat free yogurt and cottage cheese, boiled eggs and nothing else. Drinking coke zero from time to time, which I understood is ok.
    I haven’t been extremely consistent about exercising, only 2 of the 5 days I worked out around 30 mins, but I do move a lot during my working hours.
    I am thinking to stop the diet for a while and then reboot and start again with proper work out. What do you think?

    • Amber on March 23, 2015

      Hi Sandra

      The most common reasons for failing to lose weight are constipation and/or water retention. Could either of these be the reason for you slow rate of weight loss?

      Best wishes


  • Marcos on March 29, 2014

    WOW just what I was looking for. Came here by searching for
    dukan attack phase how long

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